Suppressor Impact Shift

[mattiooo]

I'm assuming that the change in point of impact that comes from a suppressor is not a constant change but unique to each type of ammunition you run. It won't always be an inch left universally (or whatever shift I will get). Am I correct?

[Delfuego]

It should be a repeatable change with a good suppressor. I think it has more to do with weight being added to the end of the barrel. Changing ammo will always change you point of impact, it can even change from lot to lot with the same brand/type of ammo. I am no expert on suppressors, and their are guys on here that never shoot unsuppressed like me, hopefully someon will chime in. I am still a savage...

PS: It would help a lot if you gave more specifics like rifle, caliber, barrel length contour and type of can.

[mattiooo]

PS: It would help a lot if you gave more specifics like rifle, caliber, barrel length contour and type of can.

It is an 300 BLK AR with an 8.5" a2 profile barrel. The suppressor will be a Gemtech GM-45.

[Great-Kazoo]

I'm assuming that the change in point of impact that comes from a suppressor is not a constant change but unique to each type of ammunition you run. It won't always be an inch left universally (or whatever shift I will get). Am I correct?

Yes, once zero'ed while suppressed with say a 180 factory or hand load you should be on the money. Go to a 230 and you're somewhere else on target.
Bullet weight, barrel harmonics, back pressure all factor in to POI shift.

If you're getting a 4-6" POI shift i wouldn't worry, unless that POI isn't repeatable. That's your baseline, ability to maintain same POI no matter where it impacts.. As one would when doing load development.
My 308 is on @ 100 with a 168 BTHP. Go to the 147's and i'm down 2, right 5, but that POI stays the same.