Thread: Rimfire suppressor and Rimfire specific scopes

Originally Posted by vulcannz

Not sure what you mean, I have metal DPT cans on all 3 of my 22's, a Savage bolt, a little badger single shot, and a browning trombone pump: with subs all are just the trigger click then thumb.

Oh, OK...what I'm referring to is that I only used Winchester Power Point HP (high velocity stuff, about 1250+ fps?).
No supersonic 'crack' either.
But my Martini has a long barrel so maybe it slowed the bullet down enough so that it didn't go supersonic?
When I first fired it with the plastic 'can' I thought I had a misfire until I heard the bullet hit the target tree.
Firing the same ammo through my JW15 with the HushPro RF on I can hear the shot (not quiet enough to hear the firing pin strike).
Yeah, the JW is a tad quieter than shooting without the HushPro RF on it.
I've never shot sub sonic .22 ammo at any time. Wondered why folks bothered as my Martini shot so quietly.
I am guessing, but it's all probably to do with the difference between my Martini and the JW (with it's shorter, skinny barrel).

Originally Posted by Grey Kiwi

Oh, OK...what I'm referring to is that I only used Winchester Power Point HP (high velocity stuff, about 1250+ fps?).
No supersonic 'crack' either.

The supersonic crack is not a function of a can suppressor, unless you're using a full barrel suppressor which slows the bullet down before it leaves the rifle (it usually has vents along the barrel to remove gas).

So it's either faulty ammo or perhaps your martini is venting someone (I've no idea about that, maybe someone else more experienced can comment). If the suppressor was doing something to slow the bullet down it'd likely get blown off.

Originally Posted by vulcannz

The supersonic crack is not a function of a can suppressor, unless you're using a full barrel suppressor which slows the bullet down before it leaves the rifle (it usually has vents along the barrel to remove gas).

So it's either faulty ammo or perhaps your martini is venting someone (I've no idea about that, maybe someone else more experienced can comment). If the suppressor was doing something to slow the bullet down it'd likely get blown off.

Without more detail, it is possible barrel length may be a factor here. Modern 22LR ammo seems to get peak velocity at around 10-12 inches down the barrel and after that the friction in the rifling is enough that the pressure behind it is not quite enough to maintain acceleration. Some of the high velocity ammo is only a hundred or so FPS above super sonic so it would not take much to slow it down.