Will hard cast, lite load, lead bullet's, fired

[.50DE]

thru a Mac 11 with a bower's 9mm suppressor........will these mess up my suppressor? The bullet's are 147grn .356 diameter. All the factory ammo I find is around 960fps and the "report" is still too much. My hand load's cycle the Mac 11 ok, and are very quiet. I know about the warranty on "silencers", and they say dont shoot reloads.:banghead:

 

[GooseGestapo]

A good friend of mine has a MAC-11 with a supressor.

He's shot MANY-MANY of my 120gr Cast lead bullet through his. They chrono at ~1,150fps however. A bit of supersonic "crack". However, most of the noise you're hearing is the action of the firearm cycling...... and bullet impact.

He does, however, disassemble the supressor and cleans it after shooting it.
He's never complained, except about how fast the ammo depletes.........
Even at 500rds at a time........ (he's got a lot of extra magazines.......)

(He's got 3 Goodyear tire center franchises, so he keeps me in scrap tire weights; so he's got a near inexhaustable supply of 9mm to feed the MAC....).