Just picked this thread up while browsing the 'net; quite interesting, I think...
http://www.shilen.com/faq.html
Have a look, and put your two bobs' worth in; and
what do you reckon, Shane?
Barrel questions
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woob614271
- 17Rem
- Posts: 1123
- Joined: Mon Jan 29, 2007 8:49 pm
- Favourite Cartridge: 17Rem, 22.250AI, 308
- Location: townsville qld
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shane
- Resident Gunsmith
- Posts: 1266
- Joined: Tue Jul 11, 2006 7:09 am
- Favourite Cartridge: none
- Location: narrandera
Gday WOOB,
I can remember reading this before years ago somewhere so i had a quick flick through it.
It all sounds fairly good to me. The only thing i would add is that i have fluted plenty of bench rifles over the years and can say that a well stress releaved barrel that is correctly fluted will not loose any accuracy from fluting.
I feel Shilen will have stated this mainly due to some of the poor fluting jobs their barrels have been subjected to by various people over the years which have caused problems.
Also as for the cryo bit, they would be correct in finding no difference in their barrels before and after with x ray diffraction because their barrels are well stress relieved. A poorly stress relieved barrel or any other part would most likely show a reduction in residual stress after cryo treatment.
And once again on the topic of barrel run in( here we go again). Running in a barrel is not a load of voodoo shit. It is a very important part of a barrels life but remember it is nothing more than cleaning your rifle well for its first few rounds.
In any barrel fouling is at its highest during the first few rounds that are fired though it so you must keep it to a minimum or you will struggle to stay onto top of it. You can do this any way you like so long as what you are doing works. A simple way to have the best success in this area is to follow a run in regeime (spelling ?), this is your best chance of keeping fouling to a minimum and accuracy at its best.
cheers,
Shane
I can remember reading this before years ago somewhere so i had a quick flick through it.
It all sounds fairly good to me. The only thing i would add is that i have fluted plenty of bench rifles over the years and can say that a well stress releaved barrel that is correctly fluted will not loose any accuracy from fluting.
I feel Shilen will have stated this mainly due to some of the poor fluting jobs their barrels have been subjected to by various people over the years which have caused problems.
Also as for the cryo bit, they would be correct in finding no difference in their barrels before and after with x ray diffraction because their barrels are well stress relieved. A poorly stress relieved barrel or any other part would most likely show a reduction in residual stress after cryo treatment.
And once again on the topic of barrel run in( here we go again). Running in a barrel is not a load of voodoo shit. It is a very important part of a barrels life but remember it is nothing more than cleaning your rifle well for its first few rounds.
In any barrel fouling is at its highest during the first few rounds that are fired though it so you must keep it to a minimum or you will struggle to stay onto top of it. You can do this any way you like so long as what you are doing works. A simple way to have the best success in this area is to follow a run in regeime (spelling ?), this is your best chance of keeping fouling to a minimum and accuracy at its best.
cheers,
Shane