I just spoke to bartlein and they told me a 10 twist won't stabilize a 200gr plus tube. I shot the tiny group above and several like it with another 10 twist 300....weird. The bart did shoot 175rdf well. So apparently a bartlein 10 twist will not spin the same as proof and lilja in the big 30's.
I'm not pleased with the results on the heavies, but at least it will shoot smaller pills. Kills the design intent on this one though. The 21" gun will beat it at everything.
That's unusual. I always thought the 10 twist was standard on pretty much all 30 calibers. Unusual.
kwg
