I run RL15.5 with 108 Berger. 33.6 grains gets me 2930 out of 26" gain twist. I have also run N150 with similar results. N550 or N555 would be options as well.
Manners TCS stock with weighted arca. Berger 144 long range hybrid target, federal match primer and RL16. I was running near max at 2885 but I have learned they run better / more consistent 1.5 to 2 grains under max which is typically 2775 to low 2800s. H4350 works too but I think RL16 is better.
Crown Ridge Barrel Works. He does excellent work and has a fast turn around time, if he has the blanks in stock.
https://www.crownridgebarrelworks.com/
GRT - Gordon's reloading tool.
I have been running barrel times for a while. People still poopoo it. I put the QL, barrel times and what Bryan Litz told me about finding a safe max and back off 1.5 to 2 grains into one model. I look for the barrel time about 1.5 grains back, typically the...
Yeah, it would take a lot of effort to cause that kind of damage. And we do not know how that barrel was cleaned - # of strokes or actual brush type, type of abrasive etc. But I think it is important to be fair and present all the information in its original context, that is all.
You really blow this out of context. And the rest of the post that was posted with the picture for context:
"This is what happens when you use a brush with an abrasive cleaner! I've posted this picture several times and it never gets old as to what can happen!
This was a 7mm (284W) F class...
Not really, that was while using abrasives in the barrel and a brush. Will it do that, I don't know. But the post was specific to using abrasives with a brush, not a brush alone.
I think I saw the same picture. Maybe someone else reposted it with no context. The original photo was shared by Frank Green of Bartlein Barrels. The info on it was someone used an abrasive in conjunction with the bronze brush, not a bronze brush alone. Context matters.