barnbwt
member
- Joined
- Aug 14, 2011
- Messages
- 7,340
I've been trying to track down a barrel for my Steyr M95 rechambering project. I scored a used set of 50 Alaskan dies for 20$ D) so I've taken that as a divine signal of which caliber to go with (I had been leaning toward 45-70). I'd like to keep the price as low as possible, so the high-end Krieger and Lilja match barrels are out (this is for a short-range thumper/express rifle, after all). The rate of twist for purpose-built 50AKs (from custom shops) seem to be around 1:20, the original 50AK used a 50cal MG barrel. As best as I can tell, such a gun was likely an M2 or M3 which look to have a twist of 1:15 (i.e. even more stable).
It seems that milsurp barrels are the only <500$ game in town, unless someone knows of a Green Mountain-type "budget" maker that does .510 bores. The M2 and M3 barrels on Gunbroker seem to be going for ~300$, and I also learned that the Soviets apparently had their own fifty; the 12.7x110mm (which also has a 1:15" twist. Coincidence?). There is only one 12.7mm Barrel on GB, a monstrous AA tank barrel that's 40" long and 3.5" in diameter at both ends (flash hider)
I'd prefer something that I wouldn't have to pay for a ton of turning on, so this guy's probably out (cool as that brake may be). A 40" "heavy" barrel would probably tame the recoil a tad, and even scare Mad Max, too
Which brings me (finally) to my question; all these machine gun barrels are Stellite lined, which we all know is a super hard, super tough alloy. I assume the barrels can be cut just as easily, but can they be reamed? Or will they require carbide or multiple HSS reamers? If tooling would cost an extra couple hundred bucks, the "civilian" barrels would obviously be more appealing.
Again, if anybody knows of a source for 50cal or 12.7mm MG barrels, please let me know. It would be fantastic to keep the price under 300$ (since the rifle only cost 100$, after all)
TCB
It seems that milsurp barrels are the only <500$ game in town, unless someone knows of a Green Mountain-type "budget" maker that does .510 bores. The M2 and M3 barrels on Gunbroker seem to be going for ~300$, and I also learned that the Soviets apparently had their own fifty; the 12.7x110mm (which also has a 1:15" twist. Coincidence?). There is only one 12.7mm Barrel on GB, a monstrous AA tank barrel that's 40" long and 3.5" in diameter at both ends (flash hider)
I'd prefer something that I wouldn't have to pay for a ton of turning on, so this guy's probably out (cool as that brake may be). A 40" "heavy" barrel would probably tame the recoil a tad, and even scare Mad Max, too
Which brings me (finally) to my question; all these machine gun barrels are Stellite lined, which we all know is a super hard, super tough alloy. I assume the barrels can be cut just as easily, but can they be reamed? Or will they require carbide or multiple HSS reamers? If tooling would cost an extra couple hundred bucks, the "civilian" barrels would obviously be more appealing.
Again, if anybody knows of a source for 50cal or 12.7mm MG barrels, please let me know. It would be fantastic to keep the price under 300$ (since the rifle only cost 100$, after all)
TCB