Thread: Projectile vs barrel length

Originally Posted by chainsaw

your observation of grey deposit at crown - are you running a suppressor or brake by any chance ?
either one, but especially suppressor, can cause excessive carbon build up, most easily detected at the crown or muzzle but the gunk will be thru out the barrel. Your cleaning regime needs to take this into account. From my experience I would not expect a lot of difference between ADI powders like 2208 & 2209 in carbon build up, but could be better/worse if you changed brand of powders.

No brake or suppressor used. It took quite a lot of effort to get the barrel clean again. Thanks for the reply