02-09-2021, 10:49 PM
I'm guessing at this point that it was the bullets. Barrel had been almost exclusively fed a diet of 123 grain Scenars. I measured a bunch and they are all .2625 diameter. As are all of the other 6.5 bullets I have on hand: 140 gr RDFs, 90 gr TNTs and the 85 gr Sierra Varminters. Barrel has always gotten max speeds (and pressures) 0.6-0.8 gr below what others report, so I'm guessing it's a little "tight".
Measured about 100 of the Hornady FMJs. All were .2630 except for 3. Which were .2635. My only thought at this point is that I got a pressure spike sending a fat one down the tube.....
Try to save a few bucks and buy cheap bullets, trash a $130 bolt.
Measured about 100 of the Hornady FMJs. All were .2630 except for 3. Which were .2635. My only thought at this point is that I got a pressure spike sending a fat one down the tube.....
Try to save a few bucks and buy cheap bullets, trash a $130 bolt.
Let's go Brandon!