02-28-2018, 03:43 PM
I started the barrel break in procedure as per Kreiger's web site. I perform this time consuming task with every new barrel and in my experience it pays off in the long run for copper fouling, accuracy and barrel life. Besides a long day at the range is much better than a day at work! I have fired 20 rounds thus far without the O-ring (I have found them to be over kill and not needed in the recent newly acquired bolts I have used for 223/5.56 and 300 Blackout builds) and I polished the extractor points. I have also rounded the ejector as detailed previously in Vascar2's post. That said, I see no marks, scratches or any adverse effects of the extractor on the fired brass. The rife functions without feeding issues from the 10 round E-lander magazines. Ejection is "smart" and out at 4-o'clock. The necks of the fired brass are deformed from smacking the shell deflector or the ejection port itself to the point I may have to force a bullet into the necks, point first to straighten them before attempting to insert them into the re-sizing die. I have cut two coils off the ejector spring and it is still smartly ejecting the fired brass out at 3 o'clock and still deforming the necks. I plan on cutting off at least one more coil on the ejector spring. My goal here is to prevent case mouth deformation and to "potty" train my rifle to pile up my spent brass at 1 0'clock, so that in competition, I'm not hitting the competitor next to me or his score keeper with hot brass. I have done this operation on all of my AR's and it also makes it easier to find your brass! As to accuracy thus far on the BCA barrel (20" stainless with straight fluting), I can see it is coming into it's own. I'll give another report when range time and weather permits. Again thanks to all!

