Hi
I have a little 10" barreled .300 AAC AR that has always been a pretty good shooter with handloads featuring 147 grn FMJBT surplus J-Words. (1.5" at 50 yards)
I recently picked up a NOE 129grn mold in the hope of coming up with a really cheap plinking load for this weapon. This boolit is a gas check, spire point design that loads to a decent overall length, and feeds reliably from an AR mag. (For info on this boolit see: http://noebulletmolds.com/NV/product...roducts_id=763)
Everything is good, .....except for the fact that it is all over the paper at 50 yards. I'm seeing 12" groups when I expected to see 2" - 3" groups!!
According to my chronograph, I'm getting about 1900 fps, which is comparable to the velocity I load the 147grn FMJBT rounds to.
.....So what do you think? .....Is the fast twist (1:8) of the .300 AAC barrel "over-stabilizing" this boolit? Has anyone else had similar problems with light .309 spire points???
KLC