Home Forums Hunting & Shooting AR and Tactical Rifles Barrel Swap POI

With an optic on the upper receiver and sighted in, how close will a new barrel shoot to point of aim? At least on paper at 100 yards?

Paul

No clue but on an AR just pull the bolt and bore sight it. If you do it carefully and check it and tweak it a handful of times I"ve rarely seen it not be good enough to shoot a deer or pig at 100, IE on paper.

There's no way of knowing that. It might be really close, or it might be way off. Just bore sight it, as rost said; it's pretty easy. I do that with the upper held gently in a drill press vise (the key is to hold it still somehow, doesn't matter what you use, just don't try to hold it by hand), and can usually get POI within a couple inches at 100 yd.

Do you know how to do the 2-shot bore sight, Paul?

Thanks for the responses.
'
Perhaps I didn't make myself clear. I wasn't asking how to sight in a rifle. I'm familiar with all of that. I was asking about the likelihood of a new barrel hitting the same or close to the original POI, given that:

The rifle is zeroed with the original barrel and optic.
The same upper and lower, optic mounted on the receiver rail - nothing changed.
Only change is a new barrel and forearm/hand guard.

I would think that unless something were seriously out of alignment (a problem in itself) the new barrel should shoot close to the original. If it showed up just with bore sighting, the misalignment would have to be severe, I'd think.

My question was more in the way of hypothetical, and wondering about the experience of others. Of course I'll just shoot it and see what occurs.

Paul

[...the likelihood of a new barrel hitting the same or close to the original POI...]

Very little.

The new barrel will respond to being fired (oscillations, etc.) in a different manner, bullet goes to a different POI, which can't be predicted.

It may or may not be real close, no way to tell other than firing.

I've never had one that didn't need to be re-zeroed I've seen POI shifts by changing flash hiders

50/50....it either will or it won’t 😊