My recent acquisition CZ452 up grades

[Oddbod]

No!!!!! A moderated .22 is a wonderful thing. Quiet undisturbed plinking or ear plug free hunting!

Indeed.
I rarely use HV .22RF ammunition these days & need to shoot some up just to get rid.

[ovenpaa]

Same here, I seldom shoot other than with a sound moderator and subs with a .22 Rimfire. Exceptions being older rifles that have not been screwcut.

[MotorRacingBruce1980]

Indeed.
I rarely use HV .22RF ammunition these days & need to shoot some up just to get rid.

I'm in the same boat the extra noise just isn't worth the flatter trajectory or slight increase in range.

[ovenpaa]

In theory the bullet could be flying slightly quicker with addition of the sound moderator due to the free boost effect however my chrono does not work with subs so I have never tested this theory with a rimfire.

[Les]

In theory the bullet could be flying slightly quicker with addition of the sound moderator due to the free boost effect however my chrono does not work with subs so I have never tested this theory with a rimfire.

Just out of interest, what is the velocity of the subs that you are using?

I always use SK Standard Plus @ 1050fps, and a moderator doesn't seem to do much to tame the noise. (SAK & Parker Hale mods).

[MotorRacingBruce1980]

CCI Subs are 1050fps and Winchester 42 max subs are 1065fps

[Oddbod]

In theory the bullet could be flying slightly quicker with addition of the sound moderator due to the free boost effect however my chrono does not work with subs so I have never tested this theory with a rimfire.

I've an old style Gamma Master that tracks right down to .177 pellets.

I'll stick a fresh PP3 in it & run some subs over it with & without the mod when I get a chance.

[ovenpaa]

Mine is a Steinert acoustic type so cannot deal with subsonic shots.