Are you guys seeing a big change in velocity when shooting suppressed? And if you have, how does it change your POI? On my rifle it moves the POI down about 1 MOA. Didn’t know if this is coincidence, the norm if it changes velocity or harmonics.
Suppressors Velocity change w/ suppressor
- Thread starter 83Scout
- Start date
That’s what I was wondering. It’s just weird that mine moves down. Must be coincidence. Thanks.
Depending on how stout your barrel is it may just be weighting it down a bit. It’s surprising how little it takes to move metal a mm or 2.
It's just weighting it down a bit. For lightweight suppressors with no mounting problems, "most" bolt guns have between 0 and 1 MOA of downward shift. Velocity change is usually 0 to +30 fps, and will almost never result in a zero change at 100 yards,
I have a heavy suppressor and a not so heavy barrel, my shift is about 1.5 mil down from unsuppressed. I always shoot suppressed so it doesn't matter to me. I tested my gun with and without suppressor, groups were the same size, just different locations.
Hi,
Without some very controlled experiments, it would be very hard to isolate that effect vs. the rest of the rifle, bedding, harmonics, etc.
Suppressed guns are generally never shot unsupressed so I do not know.
I do recall an older gun/can was 1 inch low at 100 yds. It was a 700 with a SWR/Wraith.
I only run direct thread across all platforms, so I cannot comment on POI shift. When I first ran the ASR mount and brakes, yes... there was a shift, but it was minor (nothing over a Mil).
So your break was causing a shift??? Great now I gotta pull off all my breaks and go direct thread and test. LOL!!!
By shift I mean... shooting unsuppressed with the brake then suppressed via the asr mount. There will be a difference between the two with harmonics.
I have only see one brake mounted suppressor not have a huge shift between brake to can and that is TBAC.
I have only see one brake mounted suppressor not have a huge shift between brake to can and that is TBAC.
When I first started making the Ops Inc suppressors, the owner wanted a group shot with each suppressor and each target marked and saved(was a pain in the ass). I had a nice spot where I could shoot at 60 yards next to the shop, so that's where I did the testing. .6" out at 4:30 was the norm(right handed), .6 out at between 7 and 7:30 with a lefty shooter. If it shot high or any where else, there was an issue. A brush or run the tap through would usually bring it in. The heavier the suppressor, the further from zero it would shoot. Just an observation from shooting a few thousand suppressors.
I had a TRG-42 Lapua and early AAC SS Titan. It weighed something stupid like 40 ounces. 5/8-24 muzzle direct thread. Stock barrel shortened about an inch. Shot was 6moa straight down with the can vs the muzzle brake. Same every time.
Holy crap. I use a YHM 338 can on my TRG-42 300WM, and it too drops, but not 6moa.
To be fair the Titan SS was way bigger/heavier than the YHM Phantom 338. But it was a world and a half quieter too.
I’m using a SiCo hybrid with ASR Mount on a Bergara 6.5... I see a repeatable .5 mil downward shift.
All my rifles have been consistent (per the rifle), but the shift is different per gun. My old 700, was 1.4 mils, while my AI was 0.3.
Velocity so far has all been within my reloading, so I have not experienced a gain above 20fps.
Velocity so far has all been within my reloading, so I have not experienced a gain above 20fps.
Ditto here on the shift to 4:30 with a can on the end of a .223 Tikka Varmint, shooting right handed. A little less than a mil delta...Dakota Varminter 3.0
