I have fought with this for years. When the plastic tipped bullets were invented, they (gunmakers) should have sh1tcanned all the 1-14" tooling and moved to 12. I had a Swift with a 14 twist and still have a 22-250 with a 14. Neither would shoot the 60 grain partitions any better than about 4" and wouldn't shoot any of the 55 grain plastic tipped bullets better than about 3" but would drill 40s into 3/8" groups and 50s about as good.
I shoot 40s and 50s exclusively now and sold the Swift (pre-64) because I thought it was useless as a hunting rifle. I had a bunch of 55 grain Sisk bullets and they were outstanding. Wish I still had a bunch. They were much shorter obviously that the 55 grain Vmaxs that I can't shoot.
