Thread: Suppressed 9mm

Originally Posted by Fssprecision

Yes a friend got a set a while back of various calibers, not got round to making one yet though, we could also do for 32 acp. as they run ok in old 303 barrels off cuts

I was thinking a 9mm might be subsonic out of a 2-3” 9mm ‘Barrel’ inside a .410 barrel. Once the projectile cleared the rifled section of the barrel it wouldn’t get any extra speed while travelling down the overbore section of the barrel.

A welded in adapter could be an easy way to achieve what your working toward while a removable adapter could give the option of a suppressed rifle that can convert quickly to .410 shotgun. The removable probably wouldn’t be very accurate but that wouldn’t be the end of the world as you wouldn’t be stuck with it.

The other adapter I always thought could be worthwhile is a .410 to 22 Hornet. Plenty of .224 barrel off cuts to get the raw materials for that one.


I do remember seeing an article in an old black and white shooters bible about a .303-.32ACP cartridge converter. They were trying to sell the idea as the poor man’s DeLisle carbine.


At any rate this is a neat option that your putting together, great idea for pig hunting.