AR Sponsor
Posted: 4/26/2012 3:49:01 PM EDT
| I have a 300 blk from CMMG 16" std handguard. So far im not impressed with the accuracy 2" to 3" at 100 yards with a scope on a bench. I have tried different bullet weights from 110 to 220. I know this isn't a target rig but i expected it to do better than that. How much do you guys think a free float handguard would improve accuracy? |
|
http://www.ar15.com/forums/t_6_42/368172__300_Blackout_Load_w__pics.html
Annealing helped out. They are not the most accurate things in the world. But hilarious when you shoot the heavy bullets! I don't think it would go through a pop can @ 200yds with 220s. 
You can see the bullets go down range in the scope. 
125 HP and Horndy vmax do pretty good as the other guys already said. |
|
Quoted:
I have tried 125 gr OTM with 17 thru 18 gr H110. What kind of groups are you getting? what load? 110 vmax and 125 TNT's have been my best accuracy bullet so far. I'm over max on the charge so I won't post it, but the faster you run them the better it gets. Right away I was pretty pissed at the 6" groups at 100y, but I have been able to work it down to about 2" now. |
|
Quoted:
Quoted:
My best load was just over 1 MOA for 10 shots. This is with a CMMG 16" barrel?!?! This with a factory CMMG 16 inch upper, it has their free floated barrel. Upper has 300 aprox rounds fired. I was cheating, 16x scope and SSA-E trigger over sand bags. |
I have the 16" Free Float version of the CMMG. I'm finding with the 300 Blk you have to tweak your loads to find the best accuracy. So if your using just factory fodder that may be all you get as far as accuracy. I'm finding a tenth or two is the difference between an acurate laod or so so! LilGun has also become my go to powder for jacketed bullets, IMR4227 for cast. And like alway each firearm is different, what works for me can be totally diferent for your rifle.
|
|
I'm working on a couple hand loads for the 300 both in hornady 110 vmax. I'm using h110 amd lilgun. I get my barrel from cmmg today so I'll probably get out to shoot in a couple weeks. I haven't annealed the brass, but depending on the first couple trips to the range... I just may. I'll let you know if I find a sweet load with my cmmg barrel. Steve
|
|
Quoted:
I put the upper on another lower with a good trigger and my groups are much better now A good trigger does make a world of difference. It really is amazing how better the groups get sometimes by just swaping out a mil spec trigger for a good aftermarket one... |
AR Sponsor