Thanks for the comments and input... I might try just for the heck of it some 65.5 and (maybe) 66gr just to see where and if I see a pressure limit. I will load some more in 0.3gr increments between 63.8 and 65 and see if anything changes, and play with seating depth on the most accurate charge...
I won't be anywhere near an elk this year, but hopefully that will change in the next year or two, so no rush to get the load going for the big ones... deer and hogs is what it will most likely see in its near future, so I will keep shooting the Sierra's then, which are the SBT not the HPBT.
Have you checked runout on your handloads?
I do not have any runout gauges or anything like that... standard RCBS FL and seater dies, calipers and trying to be careful. I do roll them to see if there is evident misalignment, but don't formally check the runout.
