Wolf76
Well-Known Member
I'm quite certain a 300 RUM can get you there if you throat it properly. Nosler load data shows 3359 fps (from a 24" barrel) with 180 gr and 3.6" COAL. Extend that it to 3.8+" and your likely getting 3400.
Preferring 7MM.30-378 should get their with stout loads w/a 28" pipe.
What length barrels have to get to that?7 Allen Mag.
The only sensible caliber for bc would be the 7mm. I've hit it before with my 7mm lapua imp reamer.