Originally Posted by 6.5user
I currently shoot a 6.5x55 Swede, and yes I handload it. With 100gr Sierra varmint bullets I get over 3000fps and groups under .2" at 100 yds, 140gr Sierra soft points give me consistent 1.25" at 200 yds. I haven't confirmed the velocity on the 140's yet. My point of this thread is twofold, 1) how much performance increase could I expect by rechambering for the AI version and 2)any ballistics program I have run puts my energy below 1000 ft/lb around the 6-700 yd mark, so what would you consider to be max for this cartridge in either standard or improved?
What platform are you shooting? The original Swede model 96 Mauser?
The debate rages on about how far you can push a factory small ring Mauser action, but in modern rifles the picture changes for the better.
Any time you Ackley a chamber you reduce bolt thrust, which is a good thing when you are looking for max velocity, but how far you want to take a Mdl96 Mauser would be up to you.
More info please.