Multi Calibre Moderators

[Oly]

I know you can use full bore mods on a variety of full bore calibres (within limits), but do any also work effectively on .22lr too?

[Zaitsev]

lost volume tends to be too large. Tried a T4 on my .22 and it was no quieter than my SAK (MK1 E.A.R)

[baldie]

Not a wise move using a fullbore mod on a .22lr. A .22lr discharges unburnt powder with every shot. This sits in the mod, and gets mixed with wd40 etc. When its then put back on a fullbore, it can ignite, and blow up. Peter Jackson will now not sell a fullbore mod to anyone who mentions its for a .22lr.

[Oly]

Fair do's, thought something as much, just wasn't sure if there was any exception to the rule available.

 

Cheers,

Oly

[tulkyuk]

I presume the ones that can be stripped and cleaned would be ok, as long as you did so before or after calibre change.

[baldie]

yes that would be fine Tulky. However, the law of diminishing returns rears it head with a moderator that is too large. Too much volume can be counter productive. A mod has to have sufficient volume to absorb the gas, but not too much volume, otherwise it doesn,t "work" the mod. A good example of this is most .22 mods are fine on a .22, but the slim ones struggle on a .17 hmr. You need to go to something the size, and volume of a SAK to absorb the larger cartridge.

[Oly]

So Baldie, is it dangerous, effect the POI, or does it simply not provide that great an effect of sound moderation? Not just for rimfire v centrefire but also whether a 308 mod would work (albeit not as quiet) on something like a 223?

[Alycidon]

I have listened to a 30 cal mod on the end of a 22.250, still has a healthy bark to it.

 

A