02-17-2021, 12:14 AM
Thanks Klem - I don't think it's a hot load - I can get up into the low 27s with XBR with 123 Scenars in a Lapua case, so 25.5 shouldn't be hot. I was quite surprised though at the velocity though when I did my ladder. It's where I started and where the accuracy and sd was. SDs and accuracy widened I've the next 3 steps so I didn't even bother to finish it. But maybe the LRP enhances XBRs wonkiness with 123s in Grendel and contributed in a confluence of events. I do know I'll be using the remainder of my XBR keg with 77s in .223 where I've had great success with it.
I've got a tight chamber. I run C Products mags which offer the 2.31 COAL. When I first got the barrel, I didn't have the Hornady comparator and I started loading dummies with the Scenars around 2.29. They stuck and they kept on sticking until I got to 2.25, which is where I run them. The comparator (which I distrust immensely) tells me they are 2.26 to the lands. If throat erosion is what wears out a barrel, she has got a ton of life left! Tight chamber rather than tight barrel could also explain why my max charges are 0.6-0.8 grains below everyone else's.
I'm resilient enough to move along. My spare bolt locks down on and ejects my sized brass. All that's left is to put one of the loaded Scenars I have downrange to make sure the case doesn't stretch too much. My memory tells me the brass from the barrel it came from was about 0.005" longer than the JP set up. Then it's on to 1k of the 85 gr Sierras and H322....
I've got a tight chamber. I run C Products mags which offer the 2.31 COAL. When I first got the barrel, I didn't have the Hornady comparator and I started loading dummies with the Scenars around 2.29. They stuck and they kept on sticking until I got to 2.25, which is where I run them. The comparator (which I distrust immensely) tells me they are 2.26 to the lands. If throat erosion is what wears out a barrel, she has got a ton of life left! Tight chamber rather than tight barrel could also explain why my max charges are 0.6-0.8 grains below everyone else's.
I'm resilient enough to move along. My spare bolt locks down on and ejects my sized brass. All that's left is to put one of the loaded Scenars I have downrange to make sure the case doesn't stretch too much. My memory tells me the brass from the barrel it came from was about 0.005" longer than the JP set up. Then it's on to 1k of the 85 gr Sierras and H322....
Let's go Brandon!