Dirtfarmer- Regarding the 180 Barnes TTSX & Ramshot powders, FYI, I've used TAC & X-terminator. Using WW brass [in a 22" Hawkeye], which hold about 52.5 gr. to the base of the neck [which will be more than filled with the 180 TTSX bullet shank]. With TAC, I got up to 55 gr, very heavily compressed [well over 100+%], 2809 fps average, ES of 56fps, no pressure signs at all. COAL 2.705"; .050" off the lands. I thought a faster powder was called for and tried X-terminator, started at 48gr [2616fps], up to 52.5gr [2715fps]. No high pressure signs, rounded primer corner. I still need to try somewhat more compressed X-terminator loads but haven't yet. X-terminator was supposed to have great promise per Charlie Sisk & the Ramshot folks I read somewhere. I doubt it will reach the TAC velocity [yes, I appear to be trying to reach 35 Whelen velocities or about 95% thereof]. I've also tried the Speer 180gr flat point w/ H4198, starting load of 38gr in a Ruger American, 20" barrel, getting mid 2250s to 2311fps, big spread though. Thought this might help your research. -Mark
