doublegunshop.com - home Forums General Discussion Classic & Custom Single Barreled Sporting Rifles @ doublegunshop.com Next "project"? Whitey asked for it - blame him.

Mike:

Just out of curiosity, what style and weight .41 mag bullets were you using and what kind of velocity were you getting out of the 450-400 2-3/8"? I have a Swinburn's Patent Martini that was converted to .22 rimfire at some point in its past and I'm thinking of restoring it to centerfire, but haven't settled on a cartridge choice. The 450-400 2-3/8" is a candidate, but I want something that I could use as a deer rifle out to about 150 yards and an elk rifle out to 100 or so. It appears that your loads in this cartridge might make the grade.

Thanks.

Rem

My question, Oldstarfire, is what is the wall thickness of the liner just in front of the false chamber insert? And what is the pressure of a .32-40 at that point? Obviously, it's worked so far, but I thought that some of the strength of barrel liners comes from the original barrel into which it has been closely fitted and sweated into place. Thanks for sharing your projects with us. Always interesting.

Liner OD is .5625, bore is .323, wall about .110
Pressure? Don't know, cant hold my finger over the muzzle tight enough to feel (Joke).
I am shooting a 160 cast with 7 gr Trail Boss, seems very mild.

I did similar with a 38-55 in a 20 ga with no problem, later epoxied the liner into place as I did not like the accuracy. Found the problem was actually a bad crown.

Rem I used Hornady .410 diameter 210 gr hp/xtp bullets. Used the H4198 for black formula. I started at that and I think I had to go up 2 grains to regulate. I do not know the velocity.

Mike:

Thanks.

Rem