Suppressors Pressure issues with suppressor.

[Akhunter907]

Hello. I have about 2000 rounds on a TBAC Ultra. Mix of 223, 300wsm and some 6.5 saum

shooting my 300 today, with a known load that has no pressure problems. I started getting a sticky bolt. Extractor marks etc. took the suppressor off. Everything went back to normal. Everything was fine suppressed when I started. It kind of “came on as I was shooting suppressed”

So so kind of new to suppressors. Do I need to clean it? That’s about my only thought?

 

[Zak Smith]

Your chamber probably has a tight neck or throat and when the increased carbon builds up from the suppressor backpressure, it increases peak pressure due to less clearance

 

[Strykervet]

Could also be the load. Variations in lots or handloads happen and some powders are dirtier than others exacerbating what Zak said.

 

[Akhunter907]

Ya, was thinking maybe along those lines too. I’ll get a good brush in the throat. Maybe I’ve neglected it.

was just surprised how quickly it came on. Hundreds of suppressed rounds. With this same charge and load. I’m sure it’s operator error or neglect. Love the suppressor. Maybe just hit that threshold of carbon buildup....

 

[lte82]

This happens to me as well. The loads are great without the can, then it has heavier bolt lift and extractor marks when the can goes on. It is more of an issue with loads that already are on the edge pressure wise as well.

 

[demonjigger]

Same thing happened to me. Snowy Mountain 308, with a 175 TMK load I had shot for 2 years without any problems, then after a few hundred rounds with a suppressor I started blowing primers out of the pockets, so I am just planning on cleaning more regularly. At least the chamber/throat area.