MAH wrote on Jun 4
th, 2025 at 5:53am:
To the people that have replied thank you. This rifle was planned from the beginning to shoot only a hundred yards. When it was put together I used a 1-13 twist S.S. barrel from Shilen. Velocity with the 130 grain round is on average 1150 fps. The velocity is the speed I wanted to be. My case web expansion is .0007, from full length resizing .350 to .3507. This an average using Star line cases. The last point is I am not sure if a .001 expansion is max pressure, or what the loading manual states at .353. Somewhere I had read that .001 case expansion should be considered max. Trying to find that again.
Thanks for the reply's, the journey is the fun part. The reward is bring back to life a fine old rifle, back to glory.
MAH
So, with that barrel, it will handle bullets as long as 1.2 and 200 gr. A 22 twist will stabilize your 130 gr bullet. I have built several 30's in 12, 13 and 14 twist. The 14 twist was my first and it stabilizes the above bullets at 1400 fps.
Because of the velocity you are wanting, do you want to stay sub sonic? If your going to stick with fixed ammo, with a std 32/20 chamber, you have 2 choices. First use bore riding bullets that are bore size to .001 over, so you can still chamber them. You can make a 2 diameter sizing die to do that. Second, re-throat the chamber, with a .310 diameter freebore about .12 long with a ~3° - 1.5° lead angle. 1.5 total or, .75° lead per side, being the better.
In your load development, look for ES of under 20 fps, and a clean bore, to insure that you have good combustion of the powder. See if you can find a few Rem cases to try, also.
The best accuracy, will be had breech seating the bullet and you can do that, w/o altering the throat.