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:)
 
I have 325's but it shoots so well with the 303's I haven't tried to work up another load.
I'm not recoil sensitive, but after getting kicked 20 consecutive times (total shots for the paper match) by the mule I was behind I called it quits with those things!
 
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
 
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
Is you barrel for a break action rifle or a full blown bolt gun with 5" of 1.25" breech?
If a full blown bolt rifle that can take it all the way for performance I'll highly recommend 10x. I freaking ove 10x and have 24lbs in my basement. I won't even look at another powder. 303HC Pittmans at just over 3100 fps shooting .2-.3 @ 100. Cant ask for much more. I absolutely love my 45XML McWhorter

If yours is a break open muzzleloader then you are no where near a bolt action performances and need to look at other powders. Always check with your barrel smith. He shoukd have info for you
 
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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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