Fascinating to watch professional engineering👍🏻 had a go at making an ultra short carbine HW 80. 9.75 “ barel with a saw and a drill, square and a file. Also an old Webley cocking Ade. The accuracy was no worse than my other HW springers over 30 mts. Although more concentration needed without the extra weight of the longer barrel.
Hi mate. You can buy bore pins (don't know the correct name if there is one) that fit extremely snugly in the bore, so you can then measure the run out and concentricity of the bore externally without having to account for the rifling, then you can crown it absolutely perfectly..
That would work if you have a regular barrel, if it has a choke like the one in the video then it doesn't work. Choke gets ever so slightly smaller at the end of the making the gaugepin wobble with inaccurate readings on the dti.
we did used to make them to do barrels but we have a system now so we don't bother, silly really but you just get used to doing things a certain way 👍👍
I can`t really understand certain manufactures using un-choked barrels for the Sub12 market as slug ammunition doesn't really work at low FPS. Your re-barrelled Epic has definitely improved the consistency of the groups at 50 yards. Thanks for showing the process taken to re-barrel the Epic. Beautiful work as always!
Chokes aren't the be all and end all of accuracy. A poorly made choke will ruin any barrel, and a well made unchoked barrel will shoot just as well as a choked one. As with all air rifles, a good barrel, choked or unchoked, is an absolute lottery..
Senang saya lihatnya,pengerja'annya sangat akurat dan teliti.... Senapannya juga sngat bgus,dengan akurasi yg luar biasa...... Sehat selalu mr..... Sallam dari indonesia ...
Truely amazing content once again. You truely deserve a section in airgun world magazine, but I'm guessing the manufacturers wouldn't like that one bit 😂
A nicely done upgrade with good results.....its a shame more and more need barrels to make them the rifles they should be out of the box. Good to see Silco's performing well.
On an old episode of the original "Hot Air, " Tony Belas mentioned that a barrel over a certain length at 12 ft/lb was basically just extra material and weight. The choke being the main factor for accuracy, and that's at the end of the barrel whether its 10 inches or 20 inches.
I really like how you grind the concave crown protection on the barrel. Might want to give that a go if i want to put a new barrel on a rifle in the future. With FAC airrifles the deburring of the crown does make a difference, using a chamfering tool works but isn't great. using a piece of brass with a radius turned on the end in the tailstock and some very fine polishing compound works better. Seems higher power likes a smoother/softer transition then a chamfering bit gives.
we used to use a brass ball with polishing compound on in the tail stock to finish the crown but over time we decided it didn't make much difference in sub 12 , but HP is a different game i think 😀
looks like a good upgrade my friend . taken a pretty good rifle and made it just that bit better . i would say or far off bench-rest would be fairly competitive with a bit of practice 👍
Great job. As usual….A choke does work at 12 ftp with pellets. My no choke CZub 700 .22 shoots 6.5 mm ctc at 50 mtr. Redesign JSB 25 gr at 910 fps at 110 bar reg. The Epic is becoming my favorite rather quick. Have now an LW poly 700 177/4.5 barrel kit on it. Reg 145 H&N 16 gr does 1065 fps. Sadly no chance to shoot groups soon.
Good set of results for you with the machined barrel. Bit of a disappointment that you had to do that level of upgrade on such an expensive rifle. Although you probably enjoyed doing the work 😃😃
I've never understood the concept behind carbon tensioners tbh. The carbon will have very little thermal expansion/contraction longitudinally whereas the barrel will have about 10x more. Whatever 'tension' you set on the barrel will change with the air temp. What would be a very cool test would be to swap the carbon for steel of the same grade as the barrel and run it through the temp changes. Mint bit of machining mind😉
love your videos woudl like to see what you could do to improve a turkish gun like reximax pretensis lots of potential but sadly just don't find very consistent
@@sub12airgunners there are methods out there that involve heating and variations of cutting the outside of the barrel down to decrease wall thickness to apply a band that is shrink fit.. I literally just put 2 screw clamp shaft collars on a bare trail XL barrel and tightened them down and it was sufficient. I did this years ago when i bought 2 extra ($20 each) barrels and cut them down an inch at a time to see the velocity increase and plot the curve. long story short, crossman barrels are not consistent enough to cut down this way without a large supply of barrels.
When the pellet is pushed home by the probe where is it sitting (not a gun I know much about) Does the pellet essentially sit flush with the end of the barrel as per a springer?
@sub12airgunners shame the port can not be made longer, so the pellet would be pushed just into the barrel with a springer style lead in. Reason i asked was a white ago I was chatting to Dutch lads who shoot 100m benchrest, they were modifying the hw100 for better consistency and accuracy. What they found was a needle probe worked better than a tube probe and sitting the skirt against a springer style lead in improved the consistency and reduced the air needed per shot as the pellet was acting as a valve like it does in a springer. They made the problems adjustable for length so they could exactly seat pellets at a given place in the barrel each and every time. I did similar work to my sub12 177 hw100, altering the lead in and making an adjustable probe, for sure it enhanced the gun.
I've noticed on LW barrels, that i can never get a "great" finish. I've tried many different tools and configurations trying to get a good finish. It always comes out looking sorta galled up. I end up finishing with sandpaper nearly every time. This HW looks like it's doing the same thing Lw's do. Are they just super soft steel?
Know of a few Epic 2 who have/had the same problem. Put a little drop of blue locktite on the adjustment screw of the valve system. Screw flush with the valve housing. Use 70 shore orings with silicone grease when putting valve housing in.
Fascinating to watch professional engineering👍🏻 had a go at making an ultra short carbine HW 80. 9.75 “ barel with a saw and a drill, square and a file. Also an old Webley cocking Ade. The accuracy was no worse than my other HW springers over 30 mts. Although more concentration needed without the extra weight of the longer barrel.
It's beautiful to see your way of working, congratulations...greetings from Uruguay.
Thanks very much 🙏 and hello 👋
Hi mate. You can buy bore pins (don't know the correct name if there is one) that fit extremely snugly in the bore, so you can then measure the run out and concentricity of the bore externally without having to account for the rifling, then you can crown it absolutely perfectly..
I was thinking there must be something like that available, or what material to turn some out of…
That would work if you have a regular barrel, if it has a choke like the one in the video then it doesn't work.
Choke gets ever so slightly smaller at the end of the making the gaugepin wobble with inaccurate readings on the dti.
@@samuraidriver4x4 I did wonder whether the choke would prevent the use of a pin..
You can machine them from brass
we did used to make them to do barrels but we have a system now so we don't bother, silly really but you just get used to doing things a certain way 👍👍
I can`t really understand certain manufactures using un-choked barrels for the Sub12 market as slug ammunition doesn't really work at low FPS. Your re-barrelled Epic has definitely improved the consistency of the groups at 50 yards. Thanks for showing the process taken to re-barrel the Epic. Beautiful work as always!
Chokes aren't the be all and end all of accuracy. A poorly made choke will ruin any barrel, and a well made unchoked barrel will shoot just as well as a choked one. As with all air rifles, a good barrel, choked or unchoked, is an absolute lottery..
The unchoked HW blanks are superb, more of the issue revolves around the pellets being of poor quality.
yes i know what you mean unchoked barrels can be great but chocked seem to much safer they are not so ammo sensitive 👍👍
Nice work as always
Thank you! Cheers!
Senang saya lihatnya,pengerja'annya sangat akurat dan teliti....
Senapannya juga sngat bgus,dengan akurasi yg luar biasa......
Sehat selalu mr.....
Sallam dari indonesia ...
Thanks very much 🙏 and hello 👋
Truely amazing content once again. You truely deserve a section in airgun world magazine, but I'm guessing the manufacturers wouldn't like that one bit 😂
Maybe one day, but i think you may be correct😂
Epic bit of work
Thanks very much 🙏
A nicely done upgrade with good results.....its a shame more and more need barrels to make them the rifles they should be out of the box. Good to see Silco's performing well.
thanks Tim
On an old episode of the original "Hot Air, " Tony Belas mentioned that a barrel over a certain length at 12 ft/lb was basically just extra material and weight. The choke being the main factor for accuracy, and that's at the end of the barrel whether its 10 inches or 20 inches.
thanks for watching 👍
an interesting upgrade
Thanks very much 🙏
love that perfect leade in and crown 👌
Thanks very much 🙏
I really like how you grind the concave crown protection on the barrel.
Might want to give that a go if i want to put a new barrel on a rifle in the future.
With FAC airrifles the deburring of the crown does make a difference, using a chamfering tool works but isn't great.
using a piece of brass with a radius turned on the end in the tailstock and some very fine polishing compound works better.
Seems higher power likes a smoother/softer transition then a chamfering bit gives.
we used to use a brass ball with polishing compound on in the tail stock to finish the crown but over time we decided it didn't make much difference in sub 12 , but HP is a different game i think 😀
looks like a good upgrade my friend . taken a pretty good rifle and made it just that bit better . i would say or far off bench-rest would be fairly competitive with a bit of practice 👍
Thanks very much 🙏
Great job. As usual….A choke does work at 12 ftp with pellets. My no choke CZub 700 .22 shoots 6.5 mm ctc at 50 mtr. Redesign JSB 25 gr at 910 fps at 110 bar reg. The Epic is becoming my favorite rather quick. Have now an LW poly 700 177/4.5 barrel kit on it.
Reg 145 H&N 16 gr does 1065 fps. Sadly no chance to shoot groups soon.
I would agree HP is a different story, unchoked in sub 12 can be good but it does seem m to make guns very ammo sensitive 👍👍
Another enjoyable video my friend
thank you as always we really appreciate the comments and support
greetings, the joy of watching your videos, precision, skill and expertise
Thank you very much!
Good set of results for you with the machined barrel. Bit of a disappointment that you had to do that level of upgrade on such an expensive rifle. Although you probably enjoyed doing the work 😃😃
to be fair it wasn't to bad but we like our guns to be spot on, when we move them on we are happy they are the best they can be👍
I've never understood the concept behind carbon tensioners tbh. The carbon will have very little thermal expansion/contraction longitudinally whereas the barrel will have about 10x more. Whatever 'tension' you set on the barrel will change with the air temp.
What would be a very cool test would be to swap the carbon for steel of the same grade as the barrel and run it through the temp changes.
Mint bit of machining mind😉
Yes mate i know what you mean, different materials to make up barrels can be a problem with temp change
love your videos woudl like to see what you could do to improve a turkish gun like reximax pretensis lots of potential but sadly just don't find very consistent
we are hoping to do one soon 😀😀
@@sub12airgunners you can have mine lol :P
I have choked a barrel with Shaft Collars. Surprising how well that worked, good solution for us poors.
we are going to have a go at that one day, we keep saying we are going to but never get round to it yet👍 nice one
@@sub12airgunners there are methods out there that involve heating and variations of cutting the outside of the barrel down to decrease wall thickness to apply a band that is shrink fit.. I literally just put 2 screw clamp shaft collars on a bare trail XL barrel and tightened them down and it was sufficient. I did this years ago when i bought 2 extra ($20 each) barrels and cut them down an inch at a time to see the velocity increase and plot the curve. long story short, crossman barrels are not consistent enough to cut down this way without a large supply of barrels.
When the pellet is pushed home by the probe where is it sitting (not a gun I know much about)
Does the pellet essentially sit flush with the end of the barrel as per a springer?
Hi no it sits about 6mm in the barrel so just engaged in the riffling 👍
@sub12airgunners shame the port can not be made longer, so the pellet would be pushed just into the barrel with a springer style lead in. Reason i asked was a white ago I was chatting to Dutch lads who shoot 100m benchrest, they were modifying the hw100 for better consistency and accuracy. What they found was a needle probe worked better than a tube probe and sitting the skirt against a springer style lead in improved the consistency and reduced the air needed per shot as the pellet was acting as a valve like it does in a springer. They made the problems adjustable for length so they could exactly seat pellets at a given place in the barrel each and every time.
I did similar work to my sub12 177 hw100, altering the lead in and making an adjustable probe, for sure it enhanced the gun.
Way nice! 😁👍🏻
Thanks very much 🙏
Lovely work as always, do you have a link to the micro boring bar? Tia
thank you, i think it came from cutwel and it's the microscope boring bar i did used to make them but that one works very well 👍
@ thanks 👍
I've noticed on LW barrels, that i can never get a "great" finish. I've tried many different tools and configurations trying to get a good finish. It always comes out looking sorta galled up. I end up finishing with sandpaper nearly every time. This HW looks like it's doing the same thing Lw's do. Are they just super soft steel?
Would you consider manufacturing an carbon shroud and moderator for an katran NC
THANK YOU
Sorry we don't do custom parts for people 😌
Привет, а почему ты не снял мясо со стволика? Там же на конце идет отвод воздуха в кожух. Ты мог увеличить интегральный объем расширения!
this is a sub 12 lbft gun so we need the small transfer port 👍
Valve setting very bad. My Epic two valve Brocken.Valve setting changes are required.
Know of a few Epic 2 who have/had the same problem. Put a little drop of blue locktite on the adjustment screw of the valve system. Screw flush with the valve housing. Use 70 shore orings with silicone grease when putting valve housing in.
😀😀😀
👊😀
ecceptionel
thank you very much 👍