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Suppressors Supressor reducing my velocity??

Rifle Barrel Blanks

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Minuteman
Oct 12, 2008
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I have about 1500 rounds through my TBA 30P 1, just noticed my velocity is reduced about 30FPS when I put my can on.....WFT mate, I usually only run with the can on, have never taken it off, But I had a match where I could not run a can so I have to take it off and noticed velocity was different.

Is this usual? I thought it sped it up?

THanks
 
That's exactly what I was thinking,

I am using a magneto speed v2,

Usually I see a slight amount of speed increase, But I was also using a chrono that was 5 feet away in the past. The last couple years I have been using this magneto speed. Has been spot on with me dope so I am confused!!

I'd recheck everything (conditions, powder lot, etc) because there's no physical mechanism to slow it down.

I've noticed that sometimes chronos measure differently based on the gas plume.