Suppressors Today's totally random suppressor question

[TheGerman]

On my Mk12Mod1 I have the Ops Inc suppressor and normally shoot 77g TMK loaded to right around Mk262 velocities.

If I wanted to occasionally shoot the shit steel cased 55g FMJ .223 we train with in our carbines, would there be an issue?

Common sense tells me I'm not getting a baffle strike because its the same caliber, in the same gun so unless something moved its a non-issue. But, wanted to ask before I ended up with a dent in the suppressor or something.

 

[MidCitiesMildMan]

I have went back and forth in the same gun & can, between good ammo including heavies, and the cheap steel. No problems.

 

[2ndamendfan]

Before i type a big long response i have 2 questions. 1 do you ever shoot steel in that gun without suppressor and 2 do you have an adjustable gas block?

 

[TheGerman]

Before i type a big long response i have 2 questions. 1 do you ever shoot steel in that gun without suppressor and 2 do you have an adjustable gas block?

1 - I have a few times.

2 - No

I normally shoot it with the 77g TMK at distance, but there are times where I want to use it on days where we do carbine shooting, FOTM, running drills, steel plates from QCB to 350y, etc and be able to put a mag of the 223 training ammo in and use the red dot ontop of the scope.

 

[2ndamendfan]

Ok, i will go fast as i can. (Long winded at times).
some guns will have steel cases stick in the chamber, worse with a suppressor. All kinds of bull shit theories but i am pretty sure i got it figured out. (I make no claim to be the only one).
So we all know that with a suppressor " back pressure" is quite a bit higher. I believe that the steel case needs a little more time to relax than brass. With the back pressure being higher the gun cycles sooner and the case is still expqnded and the gun cycles pulling the rim off some times.
you need to slow the gun down just a bit. (Most guns are way over gased). Either a heavier buffer or a gas block adjustment takes care of it.
I have made over 20 ARs eat steel 100% reliably and if a gun had an issue either one of these has always made it work.
your gun may work no problem, just need to try it and . normally will show up with in 2 mags. A few i have done stuck a case with in 5 shots. Others have needed a little heat i guess.

 

[2ndamendfan]

Oh and in my experience this has no ill effect on how the gun works with brass and in fact seems to work better. Again most guns are way over gassed so that is really what you are fixing.