Originally Posted by mp4444
I misunderstood-believed you had rechambered,or rebarreled to 338-284!
I'm at 2640fps with max load of I3031 in my 338 out of a kimber-next powder is 8208 xbr-fastest according to hogdon data. Waiting for a break to head out to the range-will post results.


Is that 2640 for the 185 TTSX? If so you'll be happy with TAC or 8208 XBR. Both will get over 2700 comfortably. AA2230 is on my list to try with the 185. It's really good with the 160 TTSX. I have a copy of Barnes load data showing 2798 using AA2230 with the 185 TSX/MRX.