I've shot quite a few one hole groups with several rifles a great many shooter fo especially those in competitions. Have to be consistent not only in your loads but how you mount and shoot your rifle. Perfect practice makes perfect.
Green tip fmj isn't the most accurate ammo in the world. Your group sixe could be related to inconsistencies in the ammo. I bought a few bulk packs of ammo when I got my first 223, a savage axis 2, that bulj ammo shot 3 in groups at 200 yds sometimes bigger, good factory ammo, fed gmm 69 gr hpbt, shot bug holes. I bought a savage m11 in 223 and gave the axis to my sil. I've been doing load work on this rifle for 2 years and the best that I can get out of it is 7/8 ths in. In my case the axis is just more accurate, so far, than the m11. I shot the axis out to almost 600 yds and hit my target. It can be done just takes practice and a place to shoot longer distances.. by the way I use rcbs standard. Full length and neck size dies with an rcbs auto 4x4 progressive press.
Well I think you should go back and read my post again. I had great groupings at 20 yards or so. No problem there but 20 yards isn't much of a test.
Out to 50-100 yards it absolutely sucked but that was because I was using a red dot with zero magnification and with my eyes (even with prescription glasses) can't see $#@% at those distance's.
Also a bolt action rifle is a
completely different animal than an AR. Bolt action's almost always out perform AR's...almost.
And yes, I'm aware that the ammo I used is not designed for sub-moa accuracy. It's what they had on the shelf at the time I bought the AR. That's why I
plan to start reloading 5.56/.223. I've compiled a list of stuff I need to reload for my AR (damn list is approaching 1K!!!).
I've been reloading for my Savages (.308 BA) and after a bazillion seeds of freedom, I often shoot sub-moa groups from 100 yards out to 400 yards.
Practice, indeed, makes perfect....almost. I learned this stuff virtually on my own, a lot by accident. My avatar shows a good day at the range at 400 yards.
I use RCBS for my .308's and handguns. They're great, no problems. I just want the best I can afford at the start of my reloading for my AR because I
know I'm gonna be shooting it
a lot!!! And I like to "stretch out" myself and my guns to see just how far I can shoot them.
Currently my place of residence doesn't have enough room to accommodate another press so I have to make due with what I got, a single stage Hornady Lock-n-Load press. I went through some "teething" pains in the beginning but I rarely run into any issues now.