I haven't heard the 25k psi number. Thanks
Fireform barrel idea
- Thread starter Mram10us
- Start date
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birdiemc
Well-Known Member
And for all the naysayers worried about ATF, if you took the approach and built your own "receiver"/firing mechanism, it wouldn't be a rifle action so pistol length barrel is perfectly legal, we are allowed to build a gun from scratch if not with the intent to sell.
ntsqd
Well-Known Member
I'd be more tempted to make a hydro-forming station than to fire-form. Can safely do that in the garage or shop w/o worry about noise, local ordinances, ATFE, etc.
Sure would be nice to stay on topic .....
bigngreen
Well-Known Member
It comes from pressure testing barrels on 6.5 Sherman's with a Pressure Trace so it's pretty good numbers.
J E Custom
Well-Known Member
After hearing many different reason to proceed or not to proceed, I would use a take off barrel of the same caliber and just chamber it with the same reamer and fire form away, If you don't want to put rounds down the good barrel.
You could reduce the loads and fire form all of your brass. plus you wouldn't have to clean the bore
I may have a take off barrel that you could use and would be happy to give to you to prevent/risk injury.
J E CUSTOM
MNbogboy
Well-Known Member
To me there is no such thing as a lousy $200 bucks....actually that is a good chunk of my monthly retirement income.
I have a chunk of 6.5 caliber barrel that I chopped off to save weight. Often have thought of chambering it with my 6.5/257 Bob reamer. Then drilling out the rifling, hone it smooth. Make a "tight" fitting piston/rod combo to "hammer" on. Cap the breech end to stop case at appropriate head space. Need an o-ring to seal the neck and venting near the neck shoulder junction.
Pressure can be calculated by piston size and force applied. Think it would work.
Just thinking out loud again.
I have a chunk of 6.5 caliber barrel that I chopped off to save weight. Often have thought of chambering it with my 6.5/257 Bob reamer. Then drilling out the rifling, hone it smooth. Make a "tight" fitting piston/rod combo to "hammer" on. Cap the breech end to stop case at appropriate head space. Need an o-ring to seal the neck and venting near the neck shoulder junction.
Pressure can be calculated by piston size and force applied. Think it would work.
Just thinking out loud again.
Thanks JE. Got some barrels here, but appreciate it.After hearing many different reason to proceed or not to proceed, I would use a take off barrel of the same caliber and just chamber it with the same reamer and fire form away, If you don't want to put rounds down the good barrel.
You could reduce the loads and fire form all of your brass. plus you wouldn't have to clean the bore
I may have a take off barrel that you could use and would be happy to give to you to prevent/risk injury.
J E CUSTOM
ntsqd
Well-Known Member
I was on topic, I don't think fire-forming is how I do do it. I did not go into the details of how I would do it because that is not on topic, yet I see a 'like' for the post that does go into the details of how to hydro-form instead of fire-forming. hum.
The thread is about making a fireform barrel using a smaller diameter hole in the barrel to increase pressure while using as little powder as possible. I'd like to get ideas regarding that. Hydro is totally different
in my books it a free country isn't it go for it it's worth the try
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It's hard to troubleshoot an issue if half the posts are saying it's not safe, I'd use this method instead, etc. Plus it's hard for anyone to navigate the thread to find the meat of the topic. I'd be interested in a thread about improving hydroforming.
adam32
Well-Known Member
How about threading the end and using some type of valve (maybe like an air compressor drain?) so then you can fine tune the pressure?
