This fucking barrel…
TL/DR: Carbon ring every 55 rounds or so, cannot chamber, 2 times in a row, 3rd time approaching.
Alright.. Proof Stainless, 6 Creed barrel, 26”. It’s been a hammer and problem free for over 800 rounds with a can. Normal cleaning reg is 200 rounds, bore tech c4, scrub the throat, and good to go.
A month ago I’m at the range with this barrel (freshly cleaned and spun on). 108 eld, 40.5g H4350, Hornady brass (annealed every firing, trimmed to 1.915”, F/L resized- Mandrel ) cci200’s, suppressed.
At 50 rounds I start to notice the groups are opening up on steel at 500 yards. I chrono and the speeds are up by 25+ fps. I shoot a few more, then try to chamber a new round and cannot. Pull it out, try another round.. won’t chamber. So, I throw it in the truck and shoot my other rifles. Get home, throw a borescope on and sure nuff, carbon ring. I do my normal cleaning reg, and now rounds chambering again.. so, I chalk it up to freak occurrence and carry on.
A week later, I’m back at the range. Same ammo, same everything. Shooting at 100 yards just practing some fundamentals. Getting close to 50 rounds and the Labradar start showing high velocity again. Few round later, rounds won’t chamber. At this point, wtf!
I go home, bore scope again, yup.. carbon ring. Cleaning reg again, bore scope afterwards and it’s spotless. So, I think.. lets not shoot it suppressed. I hate muzzle brakes, but lets find out.
Head back out to the range today and shoot 30 rounds (same ammo) just without a suppressor. No issues, however I did bore scope it again and find a nice carbon ring forming already.
I’m not sure what to do at this point. I could try another powder (RL16) but I cannot help but think if it’s happening with 4350, RL16 will be the same. Cleaning this thing every 40 rounds to keep groups solid and velocities stable is dumb, and obviously cannot run this in a match.
Open to suggestions.
TL/DR: Carbon ring every 55 rounds or so, cannot chamber, 2 times in a row, 3rd time approaching.
Alright.. Proof Stainless, 6 Creed barrel, 26”. It’s been a hammer and problem free for over 800 rounds with a can. Normal cleaning reg is 200 rounds, bore tech c4, scrub the throat, and good to go.
A month ago I’m at the range with this barrel (freshly cleaned and spun on). 108 eld, 40.5g H4350, Hornady brass (annealed every firing, trimmed to 1.915”, F/L resized- Mandrel ) cci200’s, suppressed.
At 50 rounds I start to notice the groups are opening up on steel at 500 yards. I chrono and the speeds are up by 25+ fps. I shoot a few more, then try to chamber a new round and cannot. Pull it out, try another round.. won’t chamber. So, I throw it in the truck and shoot my other rifles. Get home, throw a borescope on and sure nuff, carbon ring. I do my normal cleaning reg, and now rounds chambering again.. so, I chalk it up to freak occurrence and carry on.
A week later, I’m back at the range. Same ammo, same everything. Shooting at 100 yards just practing some fundamentals. Getting close to 50 rounds and the Labradar start showing high velocity again. Few round later, rounds won’t chamber. At this point, wtf!
I go home, bore scope again, yup.. carbon ring. Cleaning reg again, bore scope afterwards and it’s spotless. So, I think.. lets not shoot it suppressed. I hate muzzle brakes, but lets find out.
Head back out to the range today and shoot 30 rounds (same ammo) just without a suppressor. No issues, however I did bore scope it again and find a nice carbon ring forming already.
I’m not sure what to do at this point. I could try another powder (RL16) but I cannot help but think if it’s happening with 4350, RL16 will be the same. Cleaning this thing every 40 rounds to keep groups solid and velocities stable is dumb, and obviously cannot run this in a match.
Open to suggestions.
