Carbon on crown?

[kenbro]

Hi,
Wondered if anyone else has this?
Since changing to an Ase Utra SL5i moderator (Barrel end fitting) I’ve noticed I get a build up of hard carbon on the muzzle crown. This is thick enough to chip off at times.
I don’t remember having this problem (And it is a problem keep having to work on the crown) when I used over barrel moderators.
Does anyone else suffer from this?
Ps. The barrel and moderator threads get pretty grubby too.

 

[TringSaint]

Yup. I get the same on my Winchester using the same mod. Maybe there is a bit of a gap there between the end of the barrel and the start of the baffles that allows it to build up.

 

[Malxwal]

Yes. But it's no problem if you're using a carbon remover in your cleaning regime. Just use a couple of the carbon remover soaked patches you push through the barrel on the crown and threads, soak and rub, and it comes clean.

 

[Camdig]

Yes exactly the same with Sako S20 and SL5I, I just give a wee scrub when cleaning, I don't get it to the same degree with wildcat or my Lawrence precision mods on different rifles.

 

[Pellet Pinger]

I get it with a DPT and Wildcat EVO but i put 3 dry patches through the barrel every time i shoot and use the last one to wipe the crown so it never builds up.

 

[paul o']

Yes if iv been on a range day I just soak in carbon cleaner and remove with one of the green plastic pan cleaners.

 

[palo]

I used to get it with my jet z moderator on my 308. I also got a lot of carbon in the barrel near the muzzle.
Never got it with over barrel mods.

 

[NoIDeer]

Yep all of the above.

 

[Jagged77]

Yes it’s a pain but doesn’t affect anything. Sometimes if the build up is significant I’ll scape it off with a small block of aluminium (keeping away from the crown) and then wipe with solvent.

 

[Cyres]

Normal. I have to clean the crown on my .204 every time it's shot. If multiple rounds it needs a PB brush to remove it. N140 and H335.
D

 

[Ratsbadboy]

I get it with every mod I've ever used. I simply remove it with a cotton bud soaked in Boretech Eliminator (I now use a SL7i on my .243/.308 and a SL5i on the .223).