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[bumper]

Ray,

I think your're right. The fast response, recording sound meters used to test fire arms suppressors are much more expensive than the Radio Shack variety.

Also, consider that the Marauder is already fairly quiet. De-pinging is worthwhile from my experience. My air stripper does reduce sound noticeably, but still the overall change is subtle. I mostly did it to try to reduce the "O-ring set POI shift".

The stock baffle OD is .270" while the shroud ID is .280", the bore hole in the baffles is .280", so there's a fair amount of slop there, both in fit and in the oversize bore (for a .22 cal anyway). Suppressors for regular firearms will typically have a bore that is about .030" larger than bullet diameter. A bigger bore allows for more "slop" in concentricity without the risk of baffle strikes, but also takes away from sound reduction.

So, I'll be making new baffles that are tighter fitting and have a smaller bore. I'll also make them shorter and use more of them. Not expecting much sound reduction, though there should be some. What I'm after is minimizing POI shift and improving accuracy.

bumper

[RayK]

Instead of making them all the same shorter length, I've read making them of varying sizes may work better. I.e., mix it up some shorter some medium some longer.

Ray

[Garden Sniper]

Bumper, nice machining and the reduced pellet bore on the air stripper and baffles is the way to go and really cuts the sound down. Pete.

[bbqncigars]

That's high praise coming from Pete, but it is some nice work.

Wayne

[Garden Sniper]

bumper, do you have a RAY-Jay turbocharger on your turbo prop ? they are my preferred choice for boats and one off projects, they are just getting a little hard to locate. Pete.