I get .75 MOA shooting off hand.
All AR's will do this. Or haven't you heard?
December 22, 2008, 07:23 PM
With good ammo mine would do about 1-1.25 MOA. Then the barrel became pitted. We'll see what it does with a new barrel, as I am going to be making a big upgrade in that department when I get a new barrel.
December 22, 2008, 07:35 PM
coal dragger what caused your barrel to pitt?not trying to hyjack the thread but i'm interested
December 22, 2008, 08:16 PM
not sure. I have iron sights on mine and i can't shoot them very well yet. have thought about scoping it to see what it will do.
December 22, 2008, 09:28 PM
Not to hijack the thread -but- comments on the care, feeding & experience with the M15A2 (556), accuracy etc, heavy 20" bbl. All help, & comments appreciated. Thanks fellows.
December 23, 2008, 12:10 AM
Never really measured the shot groups, but mine makes tight groups even with a 1x32 scope (no magnification at all).
Mine is a heavy barrel, its a bit front heavy (not as bad as some might think), but I love the way it shoots.
December 23, 2008, 12:15 AM
16in sw mp15. 1 to 1&1/2 moa 5 shot groups. (if I do my part using m193 55gr loads)
December 23, 2008, 01:50 AM
With a bipod and rear sandbags I can get 2-3" groups, however this is with mil-spec 5.56x45mm ammo. I'm sure using higher quality .223 match or varmint rounds, as well as magnified optics, will yield much better accuracy (although I have NM/DCM sights, they seem to help).
I'm using a Bushmaster carbine with a 16" M4-profile barrel, with C7A1/A1 improved upper, and National Match A2 sights.
December 23, 2008, 02:18 AM
Not sure what caused the pitting, the rifle was always cleaned after being fired and the bore was always oiled after cleaning. The pitting occurs about 1/2" from the muzzle and is visible to the naked eye with the aid of a flashlight. I am quite perplexed by this, as no other pitting is evident anywhere else in the bore.
The barrel is a 1/7 twist chrome lined CMMG unit, in a CMMG upper receiver. I made several attempts to contact CMMG about the issue but the line is always busy during normal business hours, and every attempt at returning my message failed on their end. When I would try to call back, I just got the busy signal on the other end of the line.
Given my experience with CMMG products and service (or lack thereof) I would recommend not purchasing anything AR related from them. At least not if you ever want to have it serviced should problems arise. They might take care of the problem, but I will never know apparently because they seem to have only one single phone line that is always busy, and from the sound of it only one individual that takes care of all "customer service".:banghead:
December 24, 2008, 12:51 AM
rcmodel, how do we know thats not a really huge target and you just made it look like 9/16th and 1 7/8th inch groups. you should ALWAYS toss a dime in the picture. ive convinced my wife that this |---------------------------------| is nine inches and tossed out all messuring devices in the house. could you been pulling the same tom foolery as myself., hmm Mr rcmodel hmmmm
no but really, my m4 barrel would get 2 inch groups at 100 yards, I didnt know they got so slim behind the handguard till I took it off to free float it, my buds A2 ? I think it is has a factory bushy barrel that shoots 1 inch to 1 1/2 groups.
December 24, 2008, 01:05 AM
Hey Coal Dragger, did you ever run any moly coated bullets through that pitted barrel. that shizz will pitt a barrel real quick if you dont know propper cleaning after using moly. here is a good read for ya if you DID use moly.
Thin Black Line
December 24, 2008, 07:15 AM
Getting 1 moa in a M1S chrome-lined 16" heavy 1-9 with a free float YHM
quad rail and 75 gr wolf gold. Has a "few" thousand rds thru it.
Lucky to get 3 moa in a mixed bag 16" chrome-lined 1-7 M4 cut with anything
of any weight from 55 to 75. Has no more than 2k thru it. No improvement
even with great optics. Not free floated.
1 to 3 MOA with a Bushm 14.5" w/ Permanent AK brake depending on ammo.
Has 10+k rds thru it. Not free floated.
December 24, 2008, 10:59 AM
Well if I do my part I get 1 moa or better with my bushy upper.
December 24, 2008, 11:01 AM
with my 14.5 barreled SDI m4, and ACOG, I can constantly hit a volley ball at 300m... I let you do the maths to find the MOA precision..
December 24, 2008, 11:34 AM
rcmodel, how do we know thats not a really huge target and you just made it look like 9/16th and 1 7/8th inch groups. you should ALWAYS toss a dime in the picture. .223 bullet holes are still .223 bullet holes.
Measure or compare them to the group measurements.
I fail to see what good a dime in the picture would do anyway.
I could easily toss a dime on the target after shooting it at 10 yards and not 80 yards like I said I did.
Bottom line, you either believe me, or you don't!
December 24, 2008, 12:11 PM
I was just crackin a funny on ya rc. I can tell how big your target is. I didnt think you would take that seriously. just trying to make ya laugh. I tend to have a glass of wine while posting on here sometimes, take all my postes after 6pm with a grain of salt. Bottom line, you either take a joke, or you don't. just above Bottom line, I believe ya.
December 24, 2008, 12:17 PM
Well, O.K. then! :D
I for sure thought you were questioning my honesty.
And it probably is hard to believe.
I shot that target, and several others about like it, while sighting in a new EoTech & load testing with Nosler Ballistic-Tip hand-loads at the same time.
I could hardly believe it myself.
December 24, 2008, 12:25 PM
nah, not hard to believe at all. every once in a while I would get a 3/4 group at 100 yards shooting my bushmaster m4 16" when it was new (non altered) using a hand loaded cheap hornady 55 grain fmj. it didnt happen much, maybe twice out of the hundreds of groups I shot with those, but it did happen.
December 24, 2008, 12:44 PM
Bushmaster Hbar 16" with 55 grn sierra prohunters I get barely sub moa groups.
December 24, 2008, 07:54 PM
helz mcfugly: Hey Coal Dragger, did you ever run any moly coated bullets through that pitted barrel. that shizz will pitt a barrel real quick if you dont know propper cleaning after using moly. here is a good read for ya if you DID use moly.
No moly was ever put through the barrel at all.
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