The sad Part is Gordon a German guy and the main head behind this Projekt past away 2022 way ahead of his Time at the age of 47 this Program had so much more potential and he done it for free for every Reloader out there!!!
It's still being worked on with some devs that are volunteering. As far as I'm aware of they're making a version for Linux and making GRT next generation. Right now any cartridges that are to be added are found on the discord.
@@HotepSaoirse the Good Thing is at the Moment i dont need the New Cartridges or other Powders i am an oldschool Guy that is mainly a Hunter and uses Cartridges like 7x64 7x57 6.5x55SE 308 223 .... with Lovex Vihtavouri and Reload Swiss Powders, for Bullets mainly Barnes TTSX, LRX with some Sierra TGK or Hornady SST in the mix, in 223 Sierra Blitzking and Matchking But you can learn GRT new Cartridges and Bullets yourself you only need the Saami / CIP Drawings and you are good to go, Bullets you can meassure them and bring them into GRT thats also not a real Problem For GRT, the main Problem is Powders and the knowledge that is lost with Gordon I am not the Guy that allways need the new greatest an newest Cartridge what i need are Cartridges that work on Game from our little Roe Deers up to Red Stags and Wild Boar in the Dense Woods in my Area or sometimes in the Austrian / German Alps with Max Ranges up to 300m
Hot tip: On the GRT Discord, there are projectile and powder files developed by some expert users. This comes in handy for some new copper solids that aren't in the GRT Database. GRT has not been updated since the original developer passed away. GRT is not perfect, but it is a means to get you close from the start, saving time, money and barrel life!
GRT still requires you to dial in the burn rate of the specific lots of powder you’re using. As shown in the OBT example at 9:02, GRT will give you an adjusted (k) and (Ba) number based upon your observed fps. Update those numbers in the Powder settings section and your data should align for that lot of powder.
Couldn’t agree more. GRT is awesome. Re the 7 Rem Mag deviation, you might want to check the temperature setting vs actuals that day. I had a 300 WM Reloader 17 load going really fast vs. GRT and only realized later that we had over 90 degrees that day 😁
It’s been a great tool for me. Updated files are available as some have mentioned. I used it to test 7 PRC before I bought. Again, great tool and will get you close to expectation.
Also when you use the OBT if you take the burn rates from the modified speed and input it into the main window it will do better in the future. Also be sure to update the temperature of the powder close to the temperature of the air if you were out all day.
GRT is awesome 👍 In point of cartridge it is not really difficult to build a new with the specs. A little tip from a German, use the CIP files of the cartridge in this files are all the data with the correct names like in GRT. 😉 So I build a 7PRC to simulate and evaluate weather I should buy a 7PRC or not. For me it is a not 🙈 Nearly the same is with powders. A lot of die manufactures supply the files for the powders to import directly into GRT. Search therefore or write them. The only downside is the bullet… there is no way around searching for specs and the usage of your calipers. Unfortunately Gordon passed away in the near past 😢
I feel like I may have left a comment or two suggesting you try this software. Definitely told Hopeful Ballistics because he was tooting his own horn about the performance of a load that I ran in GRT and was was in the 70k range.
This could be an interesting resource, thank you. I suggest caution with the magneto-speed chronograph, I had many, many velocity readings that were ~5% higher than the real velocity. I confirmed my suspicions with an Oehler model 35P, and later with a Garmin Xero C1. I found that with the Magneto-Speed, if the wand was a little lower than optimum, the chronograph would give false high results. I now use the Garmin exclusively. Just saying . . .
@@ReloadingWeatherby It required three years to figure out what was happening with the Magneto-speed. This variance happened only when the device was not properly adjusted, by error on my part or loosened under sustained recoil and muzzle blast.
@georgejohnsmith I believe Reloading Weatherby's velocity. I am merely suggesting caution with the Magneto-speed chronograph. I had run into a situation several times whereby stated velocities were high due to improper/out of adjustment of the wand. Ultimately, I switched to the Garmin Xero.
Regarding your 200+fps difference vs Barnes data, some minor changes do add up. Example, different barrel used, their test bbl v your weatherby; that can be a 50-100+ fps change alone. I've noticed Sako and Tikka barrels are considerably slower than Ruger, Remington, and cut-rifled barrels as an example. Different barrel length, yours may add upwards of 60fps. Different LOT number of powder; sadly, even with temp stable powders, I've noticed around 100fps difference with Retumbo - I lost 100fps going to a new LOT. I noticed about the same with some 25 year old IMR4350 vs new. The old stuff was much faster. Same thing with Reloder 19 and 22 for me, old v new LOT numbers. Finally, brass and primer differences can add a few fps changes.
Different types of brass makers can make a huge change. I have Norma made 257 Weatherby brass and newer 257 Weatherby brass that has a 3 gr capacity difference.
@@ReloadingWeatherby Yessir correct. I saw it with Lapua v ADG v Peterson v Norma v Nosler. Several years ago while referencing the Barnes manual, I was reaching max 1.5 grains before they did in a 270 Win with 130 TTSX and Reloder 19. Maybe even 2 grains. I'd have to check my notes but I'm pretty sure my brass and primers were identical to what they used.
In case you don't know, you have to get your cartridge volume correct, temperature is also important, the seating depth of the projectile &, in the bottom left corner of the screen above the chamber drawing, you'll see "Bullet Jump". Click on that & a screen will pop up with a warning, you click on the lower left box of that pop up & click "read & understood" then, click on "UNLOCK". When that pop up disappears, you should notice the "Bullet Jump" button is unlocked & now says "Disabled" Click on the "disabled" word & a heap of zero's will appear & you can set the bullet jump 0.020" in thousandths of inch.. This is important because the default setting is Bullet Jam. This ofcourse raises pressure in the calculation & gives exaggerated velocities.
I loaded the reloder 25 powder model from the discord but unfortunately the speeds and pressure dont match with my real world testing. But i agree grt is great for what it is. With my 6.5prc and vv n560 i could get almost exactly my real world results.
In case you don't know, you have to get your cartridge volume correct, temperature is also important, the seating depth of the projectile &, in the bottom left corner of the screen above the chamber drawing, you'll see "Bullet Jump". Click on that & a screen will pop up with a warning, you click on the lower left box of that pop up & click "read & understood" then, click on "UNLOCK". When that pop up disappears, you should notice the "Bullet Jump" button is unlocked & now says "Disabled" Click on the "disabled" word & a heap of zero's will appear & you can set the bullet jump 0.020" in thousandths of inch.. This is important because the default setting is Bullet Jam. This ofcourse raises pressure in the calculation & gives exaggerated velocities.
@@rotasaustralis That's interesting. The case volume and seating depth I've entered, but I didn't mess with the bullet jump section. I'll have to dive into that a bit. Thanks for the tip! :)
@@Rico11b It took me a while before I got onto that setting. I always set that to either 0.020" or 0.050" because I generally seat somewhere in there from the lands. The other settings to change are your "K" & "Ba" after completing some velocity testing. Always keep notes in the dropdown boxes which can be selected under the same tab as you would copy you velocity results & be sure to tick the box which uses the average velocity calculated by GRT from you results. If you then run an OBT on the "measured" velocities, you will most always see an adjustment listed in the OBT window of the "K" & "Ba". Be sure to save the original K & Ba in your notes then, change the K & Ba settings in the center lower column where the powder info is listed. This adjustment should bring the calculated velocity in line with the measured velocity average. If you want to try another projectile, always start a new page because the K & Ba will be different.
I have a 340 weatherby. I have subscribed!!! True blue follower now I have modified my 340 mark V. New stock, new barrel, new trigger If you want the stock; let me know. I also have some .338 cal, 272 gr full metal jacket, boat tail bullets I would give you; but I would want to see the reload data also…. Let me know😊
My daughter loaded in the computer the Gordon’s Reloading tool. Don’t know how to work it, but it is there Maybe you could on your ammo development start on Gordon’s reloading tool as a tutorial and show the range results ?????
This tool also said that your 195gr 7 rem mag load from last video nearly 65k pressure......which is well over the SAAMI spec for the cartridge which is 61k Dangerous........Probably not especially a newer rifles......but NOT certainly not standard spec
@@ReloadingWeatherby Yeah that's definitely living the razors edge and beyond, far safer adding barrel time if you want more velocity especially with heavy for caliber bullets
if I'm understanding correctly and provided the desired bullet & powder are in the database, one could use this tool to develop a load for which there is no published data (e.g., 160gr 338 WBY RPM). Is this correct?
Unless someone is going to continually update the GRT database 1:15 with new powders and bullets, I'll stick with my QuickLoad. Good luck and stay safe!!! 😉😉😉
Get a labradar now that everyone is drinking the new Garmin Kool-Aid 🤣🤣🤣. It helps me get accurate velocities and more real world Ballistic Coefficients by extracting the data from the SD card into my computer.
He, He, Thechnology just Overwhelmed my Comprehention of A Lifetime of loading perfect Performing and accurate, Cartridges. When I was Born a PC or a Smartphone was a Lifetime Away
Call me old-fashioned, but if my handloads for all of my rifles, including my 8 Weatherbys, will knock a mulie on his ass at about 500 yards, I'm good. Data is good for analyzing how to do it, I'm content just to know that it'll get 'er done! So far, after thirty-plus years of experience in handloading, it hasn't failed me yet.
@@TreverThompson-ih4pc All the way down to seating depth, neck resistance (which bushing to use), which primer, brass to use? I have never used GRT. What does GRT need from a shooter to tell me exactly what to load if I want to use a 139 Barnes LRX in a 280AI? I'm heading to the range tomorrow with a new 280AI. I can test GRT recommendations tonight and shoot tomorrow.
@@Accuracy1st I recommend you take the reloading all day advance load development class. It’s taught by an industry balistician who works for a powder company. He teaches internal ballistics and what actually matters when it comes to loads. It’s not as convoluted as most think. He teaches what to put in to GRT to get the most accurate results and predictions. GRT is a model, knowing what to input and how to calibrate it is a very crucial part of the process.
The sad Part is Gordon a German guy and the main head behind this Projekt past away 2022 way ahead of his Time at the age of 47 this Program had so much more potential and he done it for free for every Reloader out there!!!
It's still being worked on with some devs that are volunteering. As far as I'm aware of they're making a version for Linux and making GRT next generation. Right now any cartridges that are to be added are found on the discord.
@@HotepSaoirse the Good Thing is at the Moment i dont need the New Cartridges or other Powders i am an oldschool Guy that is mainly a Hunter and uses Cartridges like 7x64 7x57 6.5x55SE 308 223 .... with Lovex Vihtavouri and Reload Swiss Powders, for Bullets mainly Barnes TTSX, LRX with some Sierra TGK or Hornady SST in the mix, in 223 Sierra Blitzking and Matchking
But you can learn GRT new Cartridges and Bullets yourself you only need the Saami / CIP Drawings and you are good to go, Bullets you can meassure them and bring them into GRT thats also not a real Problem For GRT, the main Problem is Powders and the knowledge that is lost with Gordon
I am not the Guy that allways need the new greatest an newest Cartridge what i need are Cartridges that work on Game from our little Roe Deers up to Red Stags and Wild Boar in the Dense Woods in my Area or sometimes in the Austrian / German Alps with Max Ranges up to 300m
Hot tip: On the GRT Discord, there are projectile and powder files developed by some expert users. This comes in handy for some new copper solids that aren't in the GRT Database. GRT has not been updated since the original developer passed away.
GRT is not perfect, but it is a means to get you close from the start, saving time, money and barrel life!
Great info!
@@ReloadingWeatherbyincluding the 7 PRC
GRT still requires you to dial in the burn rate of the specific lots of powder you’re using. As shown in the OBT example at 9:02, GRT will give you an adjusted (k) and (Ba) number based upon your observed fps. Update those numbers in the Powder settings section and your data should align for that lot of powder.
Thanks for the tip!
That Mark V in .340 is beautiful. Well done! That gun is a keeper.
Couldn’t agree more. GRT is awesome. Re the 7 Rem Mag deviation, you might want to check the temperature setting vs actuals that day. I had a 300 WM Reloader 17 load going really fast vs. GRT and only realized later that we had over 90 degrees that day 😁
It’s been a great tool for me. Updated files are available as some have mentioned. I used it to test 7 PRC before I bought. Again, great tool and will get you close to expectation.
You can also do a parametric powder search which will compare similar powers, based on your selections.
Also when you use the OBT if you take the burn rates from the modified speed and input it into the main window it will do better in the future. Also be sure to update the temperature of the powder close to the temperature of the air if you were out all day.
GRT is awesome 👍
In point of cartridge it is not really difficult to build a new with the specs. A little tip from a German, use the CIP files of the cartridge in this files are all the data with the correct names like in GRT. 😉
So I build a 7PRC to simulate and evaluate weather I should buy a 7PRC or not. For me it is a not 🙈
Nearly the same is with powders. A lot of die manufactures supply the files for the powders to import directly into GRT.
Search therefore or write them.
The only downside is the bullet… there is no way around searching for specs and the usage of your calipers.
Unfortunately Gordon passed away in the near past 😢
I feel like I may have left a comment or two suggesting you try this software. Definitely told Hopeful Ballistics because he was tooting his own horn about the performance of a load that I ran in GRT and was was in the 70k range.
I want you too do some testing on the 7mm Wby Mag
This could be an interesting resource, thank you.
I suggest caution with the magneto-speed chronograph, I had many, many velocity readings that were ~5% higher than the real velocity. I confirmed my suspicions with an Oehler model 35P, and later with a Garmin Xero C1. I found that with the Magneto-Speed, if the wand was a little lower than optimum, the chronograph would give false high results. I now use the Garmin exclusively. Just saying . . .
I just watched a video comparing all of the common chronographs. The magneto-speed was consistently about 5 FPS slower than the Lab radar and Garmin.
@@ReloadingWeatherby It required three years to figure out what was happening with the Magneto-speed. This variance happened only when the device was not properly adjusted, by error on my part or loosened under sustained recoil and muzzle blast.
@@markcarew6724 I don't believe some of his velocities either.
@georgejohnsmith I believe Reloading Weatherby's velocity. I am merely suggesting caution with the Magneto-speed chronograph. I had run into a situation several times whereby stated velocities were high due to improper/out of adjustment of the wand. Ultimately, I switched to the Garmin Xero.
@@georgejohnsmith I'm making it up? LOL
Love the burn rate calculation on GRT. Some other fancy statistics such as "optimal barrel time" is less useful for me at least.
Regarding your 200+fps difference vs Barnes data, some minor changes do add up. Example, different barrel used, their test bbl v your weatherby; that can be a 50-100+ fps change alone. I've noticed Sako and Tikka barrels are considerably slower than Ruger, Remington, and cut-rifled barrels as an example. Different barrel length, yours may add upwards of 60fps. Different LOT number of powder; sadly, even with temp stable powders, I've noticed around 100fps difference with Retumbo - I lost 100fps going to a new LOT. I noticed about the same with some 25 year old IMR4350 vs new. The old stuff was much faster. Same thing with Reloder 19 and 22 for me, old v new LOT numbers. Finally, brass and primer differences can add a few fps changes.
Different types of brass makers can make a huge change. I have Norma made 257 Weatherby brass and newer 257 Weatherby brass that has a 3 gr capacity difference.
@@ReloadingWeatherby Yessir correct. I saw it with Lapua v ADG v Peterson v Norma v Nosler. Several years ago while referencing the Barnes manual, I was reaching max 1.5 grains before they did in a 270 Win with 130 TTSX and Reloder 19. Maybe even 2 grains. I'd have to check my notes but I'm pretty sure my brass and primers were identical to what they used.
@@danielrouw2593 Yes that too. I was being broad and including it in the barrel comparison but didn't make that clear.
In case you don't know, you have to get your cartridge volume correct, temperature is also important, the seating depth of the projectile &, in the bottom left corner of the screen above the chamber drawing, you'll see "Bullet Jump". Click on that & a screen will pop up with a warning, you click on the lower left box of that pop up & click "read & understood" then, click on "UNLOCK". When that pop up disappears, you should notice the "Bullet Jump" button is unlocked & now says "Disabled" Click on the "disabled" word & a heap of zero's will appear & you can set the bullet jump 0.020" in thousandths of inch.. This is important because the default setting is Bullet Jam. This ofcourse raises pressure in the calculation & gives exaggerated velocities.
I loaded the reloder 25 powder model from the discord but unfortunately the speeds and pressure dont match with my real world testing.
But i agree grt is great for what it is.
With my 6.5prc and vv n560 i could get almost exactly my real world results.
Are there any CNC reloading machines?
would you rather be like barnes 200fps faster than book or like nosler 150fps slower than book?
My Weatherby guns are also a lot faster than the Nosler data
Can you do MORE TUTORIAL OF
GORDONS RELOADING TOOL😊😊😊😊
OBT is the cheat code for finding accuracy nodes
Mine is just the opposite. My velocities are always a LOT lower than anything shown in GRT. It's annoying to me.
In case you don't know, you have to get your cartridge volume correct, temperature is also important, the seating depth of the projectile &, in the bottom left corner of the screen above the chamber drawing, you'll see "Bullet Jump". Click on that & a screen will pop up with a warning, you click on the lower left box of that pop up & click "read & understood" then, click on "UNLOCK". When that pop up disappears, you should notice the "Bullet Jump" button is unlocked & now says "Disabled" Click on the "disabled" word & a heap of zero's will appear & you can set the bullet jump 0.020" in thousandths of inch.. This is important because the default setting is Bullet Jam. This ofcourse raises pressure in the calculation & gives exaggerated velocities.
@@rotasaustralis That's interesting. The case volume and seating depth I've entered, but I didn't mess with the bullet jump section. I'll have to dive into that a bit. Thanks for the tip! :)
@@Rico11b It took me a while before I got onto that setting. I always set that to either 0.020" or 0.050" because I generally seat somewhere in there from the lands.
The other settings to change are your "K" & "Ba" after completing some velocity testing. Always keep notes in the dropdown boxes which can be selected under the same tab as you would copy you velocity results & be sure to tick the box which uses the average velocity calculated by GRT from you results. If you then run an OBT on the "measured" velocities, you will most always see an adjustment listed in the OBT window of the "K" & "Ba". Be sure to save the original K & Ba in your notes then, change the K & Ba settings in the center lower column where the powder info is listed.
This adjustment should bring the calculated velocity in line with the measured velocity average.
If you want to try another projectile, always start a new page because the K & Ba will be different.
I have a 340 weatherby. I have subscribed!!! True blue follower now
I have modified my 340 mark V.
New stock, new barrel, new trigger
If you want the stock; let me know.
I also have some .338 cal, 272 gr full metal jacket, boat tail bullets I would give you; but I would want to see the reload data also…. Let me know😊
How do you like your 340 Weatherby?
@@ReloadingWeatherby I just got it back from the gunsmith
@@ReloadingWeatherby it has a Bartlein barrel, bell and Carlson tactical/hunting stock, Triggertech trigger
My daughter loaded in the computer the Gordon’s Reloading tool. Don’t know how to work it, but it is there
Maybe you could on your ammo development start on Gordon’s reloading tool as a tutorial and show the range results ?????
This tool also said that your 195gr 7 rem mag load from last video nearly 65k pressure......which is well over the SAAMI spec for the cartridge which is 61k
Dangerous........Probably not especially a newer rifles......but NOT certainly not standard spec
And the tool said a 7mm PRC with this bullet going 3000 FPS is at 69k PSI...
@@ReloadingWeatherby Yeah that's definitely living the razors edge and beyond, far safer adding barrel time if you want more velocity especially with heavy for caliber bullets
I have one of these programs from years ago.
What does GRT stand for?
I have developed patents using this technology.
Gordon's reloading tool
Is there a mobile app version of this? I don't have a computer
Don't think so
if I'm understanding correctly and provided the desired bullet & powder are in the database, one could use this tool to develop a load for which there is no published data (e.g., 160gr 338 WBY RPM). Is this correct?
Correct. But 338 WBY RPM isn't in GRT... so you would need to put it in yourself or go into Discord and find it
Unless someone is going to continually update the GRT database 1:15 with new powders and bullets, I'll stick with my QuickLoad. Good luck and stay safe!!! 😉😉😉
Does that crono change POI?
Yes
Get a labradar now that everyone is drinking the new Garmin Kool-Aid 🤣🤣🤣. It helps me get accurate velocities and more real world Ballistic Coefficients by extracting the data from the SD card into my computer.
note to self intro is loud at work ....
I have switched to Quickload2 now that it's not being developed.
He, He, Thechnology just Overwhelmed my Comprehention of A Lifetime of loading perfect Performing and accurate, Cartridges. When I was Born a PC or a Smartphone was a Lifetime Away
Upside, has a lot of cartridges, powders, and bullets. Downside, it doesn't have some cartridges, powders, and bullets.
I downloaded it once. Couldn't figure it out in 5 seconds, so I deleted it. 😊
Give it another try
@@ReloadingWeatherby And give it 10 seconds this time. :)
I need a computer
Call me old-fashioned, but if my handloads for all of my rifles, including my 8 Weatherbys, will knock a mulie on his ass at about 500 yards, I'm good. Data is good for analyzing how to do it, I'm content just to know that it'll get 'er done! So far, after thirty-plus years of experience in handloading, it hasn't failed me yet.
Thanks for watching!
Call me old-fashioned too - same rationale
What if I told you, you can use GRT to load exactly where you need to. No ladder tests, no multiple range days, and no wasted components.
@@TreverThompson-ih4pc All the way down to seating depth, neck resistance (which bushing to use), which primer, brass to use? I have never used GRT. What does GRT need from a shooter to tell me exactly what to load if I want to use a 139 Barnes LRX in a 280AI? I'm heading to the range tomorrow with a new 280AI. I can test GRT recommendations tonight and shoot tomorrow.
@@Accuracy1st I recommend you take the reloading all day advance load development class. It’s taught by an industry balistician who works for a powder company. He teaches internal ballistics and what actually matters when it comes to loads. It’s not as convoluted as most think. He teaches what to put in to GRT to get the most accurate results and predictions. GRT is a model, knowing what to input and how to calibrate it is a very crucial part of the process.
💥❤️🩹🇺🇸🇺🇸❤️🩹💥