20 BR with 40gr bullets
I'd like to try a 20 cal for harvesting fur. I want something that is at least going to be the ballistic equal to my 17 shooting 30gr bullets at 4000 fps plus and some additional downrange energy while still giving me no sew pelt damage. I want to have good Lapua quality brass. I shot a 22br in the past but had feeding issues occasionally. With mag kits available and new MDT mags for the BR case the feeding may be a non issue.
No point in crying foul with Berger dropping the 55gr 204 bullet as that would be the reason to run a fast twist 20BR.
Can the 20BR reach 4100fps-4200fps with 40gr bullets and not toast a barrel in under 750 rounds? I also thought about building a 20 Practical or a 20 Predator.
What twist for 40s, 1/11 to be safe? I never get below 2200ft above sea level and it will be winter shooting.
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