Although I haven't chrono'd them yet, I have worked up to 12.6gr BD w/CCI350's @ 1.26 OAL in my 6" LWD barrel. No excess pressure signs, and they light up the range. Tons of fun to shoot light bullets with heavy charges of BD. Just work up slow like everyone else said, and have fun.
Edited to add:
This was using a LWD Guide Rod w/22# ISMI spring.
GEN 3 20LS/20SF/21SF/30SF/23/34/26
GEN 4 17/19/21/34/35
Last edited by Meathead9; 08-01-2011 at 18:06..