Curious if your 20" is a Rem 700 SPS? I run the 130 TTSX's out of one, and it flattens deer. When I loaded them I compared the classics: H4895 and Varget, which shot pretty well, mostly sub-MOA; but Win 748 always seemed to outperform them in my rifle, so that's what I stuck with. 53.4 grains of it, and they're leaving the muzzle at around 3,110. I've actually never seen any weight of TTSX's (130, 150, or 168's) from a .308 Win ever be recovered, all total pass-throughs. I did manage to get a measurement of the exiting diameter from the backside shoulder blade of my most recent buck, and it was still over caliber (can't remember exact number, in the .32" range) after a broadside shot at 300 yards. I feel comfortable with this load on bear and deer out to 500, and think it would do well on even elk or moose as others have experienced, but I've never personally done.