POI shift with suppressor

nealan

Joined: Jul 10, 2007

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What is a "normal" amount of POI shift when shooting with a suppressor? My .280ai shifts about 4" when I attach my direct thread Harvester Evo. That seems like a lot.

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schmellba99

Joined: Dec 4, 2002

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12:14p, 1/15/24

There is no "normal". All depends on the can, barrel profile, barrel length, etc. 4" isn't some outlandish number IMO.

nealan

Joined: Jul 10, 2007

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12:16p, 1/15/24

Is there any way to tune that in with shims? Too much risk of baffle strike ?

ttha_aggie_09

Joined: Jul 27, 2010

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In reply to nealan • 12:20p, 1/15/24

My 6.5 creedmoor POI shift was about 3-4" low but nothing left/right. Buddy of mine and lurker on this board, had a pretty significant shift 6-8" low and then 4-5" left/right. I was using ASR mount and I believe he was direct thread.

Not sure that helps just adding data points

nealan

Joined: Jul 10, 2007

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12:25p, 1/15/24

Thanks for the input guys. Sounds like it needs to be a permanent suppressor host

TikkaShooter

Joined: Mar 11, 2021

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12:28p, 1/15/24

I get 2" low with can off. No shift L or R.

This is a TBAC Ultra 5 on a Tikka with Brux #5 barrel. Using the TBAC can over break.

SMM48

Joined: Dec 2, 2002

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In reply to nealan • 12:49p, 1/15/24

Just fyi. Suppressors that are indexed (have a tab) will have more repeatable results.

JeremiahJohnson

Joined: Dec 9, 2006

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4:08p, 1/15/24

I'm not a fan of direct thread. I've had a ton of POI shift with direct thread suppressors. I switched to Area 419 Hellfire QD mounts and have zero shift.
https://www.area419.com/product/hellfire_suppressor_mount/

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nealan

Joined: Jul 10, 2007

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In reply to JeremiahJohnson • 5:45p, 1/15/24

Thanks, I'll look into it. I see there's compatibility with Harvester 30. I wonder about Harvester Evo. May give them a call

JeremiahJohnson

Joined: Dec 9, 2006

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In reply to nealan • 6:28p, 1/15/24

I assume it is the standard Hub Threading that Sico uses.

I have it on all my guns so I can switch between every rifle or use the Hellfire brake if I'm not shooting suppressed.

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aggieforester05

Joined: Dec 1, 2006

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10:35a, 1/16/24

I have a KelTec sub 2000 in .40 S&W that has so much POI shift with my Hybrid 46 (direct thread) that I can't adjust the sights enough to make up for it. No baffle strikes but makes me nervous to use it. Sad, because that big subsonic bullet is fun to shoot trash with.

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