Smokeless muzzleloader barrel?

Mine (which is a "copy" of yours) does great as well. However, I scaled back to the 300's after punishing myself at the last Challenge with the 325's and 103.5 gr H4895. I didn't even shoot the gong match afterwards. I'd had ENOUGH! 🤕
Yup I have pretty much dialed in my 303gr HC pittman at 3100 fps. I have 325's but it shoots so well with the 303's I haven't tried to work up another load.
10x. Is the JAM:)
 
Ended up buying a brux blank and sent it off to pva, I went with 1:20 twist at 26"… my buddy shot a doe yesterday at 438yds with it under a crop damage permit, the deer dropped on the spot, I am running 303pittmans but I'm going to switch to the 300g nsr from arrowhead. I'm using imr4198 but I'm about out of this powder, what other powders do you guys use, I'm looking for something fairly temp stable that I can get 2700+ fps out of, I was looking at h4895 but can't find it local
 
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