Also, 1:7 twist barrels will usually shoot 55gr just fine, though they often can be more accurate with heavier bullets.
Thanks! I was having some uncertainty about the 1/7 since I have so much 55 grain ammo stocked up.
I guess the best thing to do is to try it out and see how it does.
Is 1 MOA too much to expect from a 1/7 shooting 55 grain bullets?
Wow. I thought 1/7 was more for 70+ grain bullets. I know my 1/9 rifles handle 62 grain bullets quite well, with excellent accuracy.
1MOA at what distance (spare me the lesson on angular vs. linear measurement)? If the ammo is decent and consistent and you do your part, 1' is not too much to expect. However, if you're going to shoot surplus steel-cased ammo at 300 yards with iron sights, 1' IS too much to expect. I'm sure you see that the answer is subjective to many more factors than just bullet weight and barrel twist.
1/9 twist is almost as gross as a chrome moly bbl.
Sorry...100 yards. Isn't 1 MOA 1" at 100 yards, 3" at 300, and so forth? That's why I didn't say the yardage. Please correct me if I'm wrong.
Also the assumption is good ammo. This would also be with a good scope. I'm interested in the accuracy of the gun itself. I can easily get 1 MOA with my 1/9 ARs on factory ammo. (PMC, Remington, Black Hills). I can get close with Silver Bear steel case.
It is the same, which is why I said spare me the lesson on angular vs. linear measurement. However, as the distance increases other factors' effect will also increase and it is not fair to blame the barrel for deterioration of accuracy.
The only change to the above criteria being the 1:7 barrel twist, you should get 1'. If you don't get that, the culprit is likely not the barrel twist, but something else in the upper.