Honestly, I have no idea. I loaded them just long enough to fit into my magazine. Its a factory BDL rem 700. I actually had them seated out further with the same results but I soon discovered that they wouldn't fit the magazine so I seated them deeper. The TSX groups opened slightly while the TTSX groups stayed the same. Go figure. In my latest move I seem to have misplaced my load book with the data for those rounds. I know it is varget and its a middle of the road load, nothing super hot. Going to have to work up some more . I did have the foresight to make a dummy round for the OAL, so that will save me some time.