Re: Tackdriving AR10 Load at Max.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: queequeg</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AlcoholicusRex</div><div class="ubbcode-body"> Ok, Ok, It's only 1/2 MOA, but this is my AR10A4 with stock chrome lined 20" barrel, free floated. 45gr Varget, 168 Amax, Fed brass, WLP primer, oal 2.81" @ 2610fps. I am waiting for the 90F weather to test for excessive pressure, but want to know if this load is going to beat my rifle up prematurely. Mild primer flattening, & a shiny ejector mark seem to be the only pressure signs. This rifle usually prints around MOA with pet load of 43.5gr H4895 & 168 Amax, Win Brass, CCI br primer. Opinions? </div></div>
How did you achieve your free floating floating barrel? I have this rifle as well though with the collapsible stock. I'm not getting that kind of accuracy but then I haven't expected to find it; self fulfilling prophecy perhaps?
You meant WL<span style="text-decoration: underline">R</span> primers right?
Looks like you have found the magic! </div></div> I removed the stock hand guard & barrel nut and replaced it with a PRI carbon fiber hand guard which threads on to the upper receiver & does not touch the barrel. This rifle has about 800 rds thru it, most of them in load testing. It has the older 1/10 twist medium wt. chrome lined barrels, which is fat under the hand guards. I ran some Tubb's final finish abrasive bullets thru about 200rds ago, don't know if that helped or not, JP trigger. WLR primers.