Good idea, so the only difference between the quad rail upper and keymod upper is how you attach accessories? If you were to remove the rails , off the quad upper they would be the same, weight ? I was just planning on using 2 3 1/2 inch rails , end on to each other.
. So , breakin says 400 rnds, would it be ok to do this in one day, and does it matter how fast I put the 400 through it? Should pull a bore snake through every so many? Thanks..... Brian
First time out, started at setting 3, after 2 mags moved down to setting 2 and that's where she stayed for the better part of 300 rnds. Tryed setting 1 for 2 mags and had 2 stovepipes( the casing didn't fully eject). So 300 rnds and 2 stovepipes on setting 1. The S&J linear comp is so quiet compared to the ironeagle one, I had on my SU 16. Almost sounded like psssst! Nothing came loose after doing a few mag dumps.. I took a few pics of groups I got and I gotta give it up to the precision shooters, it takes a lot of patience . I was using Hornady superformance 53g,Hornady Zombie 55g,rem supersonic 62g, nosler varmageddon 55g, and A.E FMJ. Hornady superformance was the best at 0.981 1.054 0.956 (5 shot groups. Hornady zombie was 1.589..nosler was 1.047.. A.E best was 1.340 and 1.880. Keep in mind I'm no precision shooter and these were shot fairly quick, using a 2x7x33 scope and crappy led sled. 1.1/2 groups are average with the AE crap. My XCR can shoot under an inch , easy with the Hornady Superformance, and I'll put money on that . If somebody wanted to use a better scope and bench and knew what they were doing , they should be able to shrink that up a bit. I'm satisfied and happy with this rig. Sorry for the crappy iPhone pics, not much into the measuring thing, but thought I'd try it.it was throwing the brass from 10 to 20 feet on setting 2, and yes iwa running it wet. She ran very smooth. I guess I'll tear her down, and give her a good cleaning. Not looking forward to that though, the only rifle I tore down was a 1022.
