I just ran a few strings of fire through my 18 inch hybrid CL barrel after breaking it in last weekend (not that the break in took long at all).
L.C. and Wolf Gold brass, CCI#41, H4895/8208XBR, 77gr Nosler CC, btol 1.861 via Hornady comparator tool.
Aero precision upper trued via Pac. Tool and gauge tool. Larue 12inch handguard and Syrac adjustable gas block. Barrel bedded into receiver with blue locktite. Nightforce 2.5-10x24 for glass.
Larue MBT trigger.
Shot from prone with bipod and rear bag.
First things first, very overgassed. My gas block is about half way closed to get reliable function from Wolf Gold .223, M855, and Black Hills 77gr OTM 5.56. I expected this as it’s an 18 inch rifle gas so the gas port has to be large. No biggie.
Best group was barely under an inch, and they were my fouling rounds. .938 inch with WG brass. These all had inconsistent neck tension or other abnormality so I used them as sighters/fowlers.
Best group with 4895 was 1.10, average 1.51 across 7 groups.
Best 8208 group was 1.115, average of 1.46 over 7 groups.
With L.C. M855 (green tip) grouped 3.222
So overall I’m kinda disappointed. My AR Performance barrel groups much, much better with these same loads (.733 with WG brass and 23.3gr H4895). I wasn’t expecting 1/2 MOA performance to rival Douglass or krieger, but it’s not quite the MOA barrel I was expecting.
Just wanted to post my experience with it as there was little posted when I tried researching them.
Think I’ll finally pull the trigger on that CLE Douglass SPR barrel.