After more than 50yrs @ the loading bench I can tell you that seating depth will tell you more than 1/10th grain of powder & cost less in components & barrel wear ! With cases as large as the 300prc work up in 1/2 gr increments to get the velocities & ES you need , refine seating depth , then test different power charges + or - a 10th . Just a suggestion to save you time , money and barrel wear . CHEERS AND GOOD SHOOTING
Matt, I must say; that is the way to put a video together! Very well done. I am a 300 Weatherby guy, who loves using the 230 gn A-tip. I just purchased the ruger 300 prc and will probably follow your ladder procedure, but will use the IMR 7828 ssc. Thanks for posting the great video!
78.2 is looking promising with that 8.32 SD and that group is like 1/2 moa w/o the flyer. Maybe try it again ans play with seating depth? Seems like that would be a better load for passed 1000 yard stuff. Love your content, man. I recently finished my 300prc project (Kelbly's/26" 1-8.5 pac-nor/KRG Bravo/triggertech/Tract Toric ) and just got some retumbo and 225 eldm's to do some load development with. Your videos are very helpful.
Matt, I used to do what you are doing and I'll admit it is fun. I watched Hornady podcast EP 050 and it convinced me that none of it matters when it comes to powder charge. Basically there are to many variables such as first five rounds last five rounds barrel temperature and so on. They say your shot string should be 35 rounds not five or three and you will be surprised to find out they will all be the same!! I have loaded for over 34 years and in the back of my mind I noticed these variables but I always told myself things like I pulled that one or I did not mount the rifle to my shoulder properly and so on. Good luck with your loading and Merry Christmas!!
Interesting stuff, neat seeing that big cartridge deliver such compelling results. You did see something that I've seen int he past, and that's the groups with the best standard deviation not always having the tightest group. I dunno why that is, but I don't sweat it too much. Some guns just like different amounts of powder.
One group doesn't mean much.I consider three 3 shot groups as bare minimum for a light barrel,and three 5 shot groups for heavier barrels. Of your groups,in addition to the smallest groups,I would retry the ones with the lowest SD.
Great information. I just recently found Retumbo. I have it H1000, RL 26 and Ramshot Magnum. I'm interested to see how they all do. I had a feeling Retumbo would do well.
thanks matt, nobody has any load development on YT done in 300 prc with heavy for caliber hammer hunters or tipped hammer hunters. BTW the 214 HH COAL will work. These 214s at 3k should produce something pretty cool.
Yeah... those things are $70 for 50 count box. I hate to tell ya, but that is a bit out of my price league. I am more than willing to take donations to be able to make this happen, but those suckered are too rich for my blood.
I know this video is old, but have you since worked higher? I am running 80.0gn with lapua brass, fed 215Ms and 225eldms with no signs of pressure and running through Gordon’s I’m just under max pressure. Yielding avg speeds around 2888. This is out of a 24” pipe too
I say double or nothing, or prove it kinda deal, take your two favorite loads and see that they have consistency reenact or recreate, each group is diff let's see that load do them groups two or three times 😊
Another great video Matt. I'm doing powder change testing for this coming hunting season and I'm getting some promising results. Question, I'm useing the range buddy app for measuring group size, is your p,o,i in the center of your red dot target or in the center of your actual shot group? I'm using the same app to. And the mean radius is the true group size the app is measuring from the center of the shot group?
You spent time and money to do that, but if you want to know that is how you do it. I have a 300 PRC I have never shot but I know now how I am gonna start.
How long is your barrel? I just did load development for my new 300PRC, also with 230gr A-Tips and Retumbo. My low node is at 75.5gr wihere I get 2761fps average, ES 23, SD 12.3. High node at 77gr for 2820fps average, ES 5, SD 2.6. I have a 28” Bartlein and also used a Labradar to measure.
Hi, I am from South Africa and is also shooting a 300Prc. But i am using 212gr ELD-X. I am struggling to find a load with retambo. Currently sitting at 79.5gr. Retambo is very scarce and almost the only power i can use for my PRC thats is available in South Africa. So with out using up all my limited supply of retambo do you have any other load suggestions.
Maybe try a lower powder charge. Try doing some shot groups between 78 and 79 grains. I am finding that ot is not always best to play with the top end of the charge spectrum. Try going lower in charge and see if you get better results.
Add in the fact that he's hit a 1moa target, that's 18"x18" at 1 mile numerous times with 2 different rifles and 2 different calibers doing it his way. I'll take his way anytime.
I have no idea. It would not be an option that I would even think about using unless there is some kind of published loading data by a powder manufacturer.
After more than 50yrs @ the loading bench I can tell you that seating depth will tell you more than 1/10th grain of powder & cost less in components & barrel wear ! With cases as large as the 300prc work up in 1/2 gr increments to get the velocities & ES you need , refine seating depth , then test different power charges + or - a 10th . Just a suggestion to save you time , money and barrel wear . CHEERS AND GOOD SHOOTING
You are correct. My reloading styles have changed over time and for certain stuff, I'm showing different info and how to get it.
Thanks for watching!
Matt, I must say; that is the way to put a video together! Very well done.
I am a 300 Weatherby guy, who loves using the 230 gn A-tip. I just purchased the ruger 300 prc and will probably follow your ladder procedure, but will use the IMR 7828 ssc.
Thanks for posting the great video!
Thanks for watching!
Релодер 33 .Weatherby. 230 A tip.89gr
Really good video
Thanks for watching!
78.2 is looking promising with that 8.32 SD and that group is like 1/2 moa w/o the flyer. Maybe try it again ans play with seating depth? Seems like that would be a better load for passed 1000 yard stuff. Love your content, man. I recently finished my 300prc project (Kelbly's/26" 1-8.5 pac-nor/KRG Bravo/triggertech/Tract Toric ) and just got some retumbo and 225 eldm's to do some load development with. Your videos are very helpful.
Heck yeah! I hope that you enjoy your setup! I love shooting this RPR! It is so heavy. It really cuts down on the felt recoil.
Thanks for watching!
We need more 300 prc videos. Pretty please...
What combo do you want me to test?
@@mattsreloadingbench retumbo or h1000 with 250 A Tips
I just love the sound of that gun!
Amen to that!
Matt, I used to do what you are doing and I'll admit it is fun. I watched Hornady podcast EP 050 and it convinced me that none of it matters when it comes to powder charge. Basically there are to many variables such as first five rounds last five rounds barrel temperature and so on. They say your shot string should be 35 rounds not five or three and you will be surprised to find out they will all be the same!! I have loaded for over 34 years and in the back of my mind I noticed these variables but I always told myself things like I pulled that one or I did not mount the rifle to my shoulder properly and so on. Good luck with your loading and Merry Christmas!!
Thanks for watching!
Interesting stuff, neat seeing that big cartridge deliver such compelling results. You did see something that I've seen int he past, and that's the groups with the best standard deviation not always having the tightest group. I dunno why that is, but I don't sweat it too much. Some guns just like different amounts of powder.
Thanks for watching!
One group doesn't mean much.I consider three 3 shot groups as bare minimum for a light barrel,and three 5 shot groups for heavier barrels. Of your groups,in addition to the smallest groups,I would retry the ones with the lowest SD.
You are totally right. There is going to be more to come in the future.
Would love to see more 300 prc videos
@NorthenMNbeard what would you like to see? I am open for suggestions.
@@mattsreloadingbench honestly would be interesting to see some 205 berger load work ups with retumbo or magnum or vv n570 possibly.
@@NorthernMNbeard that is something that I could work on. But it won't be until at least fall time.
Great information. I just recently found Retumbo. I have it H1000, RL 26 and Ramshot Magnum. I'm interested to see how they all do. I had a feeling Retumbo would do well.
I have rl25 that I want to use and ramshot magnum. I will be doing load development for them in the future
@@mattsreloadingbench That's great looking forward to it!
Thanks for watching!
I love this caliber, id really like to see some load development with the heavier hammer hunter bullets in this caliber.
I will take a look into this!
thanks matt, nobody has any load development on YT done in 300 prc with heavy for caliber hammer hunters or tipped hammer hunters. BTW the 214 HH COAL will work. These 214s at 3k should produce something pretty cool.
Yeah... those things are $70 for 50 count box. I hate to tell ya, but that is a bit out of my price league. I am more than willing to take donations to be able to make this happen, but those suckered are too rich for my blood.
I know this video is old, but have you since worked higher? I am running 80.0gn with lapua brass, fed 215Ms and 225eldms with no signs of pressure and running through Gordon’s I’m just under max pressure. Yielding avg speeds around 2888. This is out of a 24” pipe too
No. I have not.
Would be a lot more interesting video if you had a target cam
I agree. That is something I will try to work on.
Matt, we’re you using new or once fired brass with your seating depth measurements? Fire formed gives most accurate results for me. Nice video.
I make sure to fire form all of my brass before doing any kind of load development.
Nice. Thanks.
Thanks for watching!
I say double or nothing, or prove it kinda deal, take your two favorite loads and see that they have consistency reenact or recreate, each group is diff let's see that load do them groups two or three times 😊
That is something that will have to wait til a later time of the year.
Another great video Matt. I'm doing powder change testing for this coming hunting season and I'm getting some promising results. Question, I'm useing the range buddy app for measuring group size, is your p,o,i in the center of your red dot target or in the center of your actual shot group? I'm using the same app to. And the mean radius is the true group size the app is measuring from the center of the shot group?
Sorry I meant P.OA for the above question.
I do not use the point of aim indicator. It is irrelevant. Once you have a group, adjust your scope. I look solely at group size.
You spent time and money to do that, but if you want to know that is how you do it. I have a 300 PRC I have never shot but I know now how I am gonna start.
Thanks for watching!
Matt, You will have much better results if your preload your bipod.
It took me a bit to figure that out
How long is your barrel? I just did load development for my new 300PRC, also with 230gr A-Tips and Retumbo. My low node is at 75.5gr wihere I get 2761fps average, ES 23, SD 12.3. High node at 77gr for 2820fps average, ES 5, SD 2.6. I have a 28” Bartlein and also used a Labradar to measure.
Oh yes - I used regular Fedarl 215 primers as my local gunshop did not have the match primers. I seated 20thou back from jam.
This Ruger RPR comes with a 26" with a 1:9 twist
Man where did you find out the Federal 215 primers?
From another reloading fanatic. Who of which I cannot say.
Hi, I am from South Africa and is also shooting a 300Prc. But i am using 212gr ELD-X. I am struggling to find a load with retambo. Currently sitting at 79.5gr. Retambo is very scarce and almost the only power i can use for my PRC thats is available in South Africa. So with out using up all my limited supply of retambo do you have any other load suggestions.
Maybe try a lower powder charge. Try doing some shot groups between 78 and 79 grains. I am finding that ot is not always best to play with the top end of the charge spectrum.
Try going lower in charge and see if you get better results.
What is the over all length
3.685"
What’s your barrel length? 26?
It is 26"
What was the recommended seating depth you used?
Per the Hornady Reloading Manual, 3.685" COL
Man you're wasting alot of ammo doing load development like that
I am. But I am having fun doing it.
@@mattsreloadingbench that's all that matters.
Add in the fact that he's hit a 1moa target, that's 18"x18" at 1 mile numerous times with 2 different rifles and 2 different calibers doing it his way. I'll take his way anytime.
Thanks for watching!
@@mattsreloadingbench i really like to develop new load too 🤷
Bmj 50 powder ok?
I have no idea. It would not be an option that I would even think about using unless there is some kind of published loading data by a powder manufacturer.
No do not use that powder