Originally Posted by
bkbville
Although the light Unique loads put the CM's in straight holes, the low speed hasn't been conducive to grouping, even at the 50yds I've been testing it at.
I've tried varous powders and fills to try and get these to stablize at a faster speed, but anything too fast (say 1300fps - I'd have to go over my notes for the actual numbers) and they keyhole.
Lacking 6.5 kurtz boolits, I took a dozen CM's and *cut* them down to just after the first lube ring, (making them PB), so they are around 145gr (from 175gr at full length.)
I loaded these up for about 1750fps, and I'm waiting for weather to test these (at the current rate, it may be a long wait.)