Re: HUGE thank you to Rainier
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MWM_5150</div><div class="ubbcode-body">ORD-
I ended up doing some troubleshooting on my assembly with some dummy rounds, took detailed notes of what I was observing in terms of cycling and what it was doing to my brass running them in and out of battery. Note that I didnt say I was having trouble with my barrel, just the assembly as a whole.
I was having some issues with dropped primers that Im going to chalk up to the ammo since it only occurred with WWB Q3130. Additionally, I was having some excessive bolt "stiffness" when going into battery. I plan on doing a more detailed write-up on the whole rifle when I get to know it a little better...
With the collected data, RA and I narrowed down what we believe to be the problem. The ending advise being to allow the assembly to break-in a little more, continue documenting problems (if any) and keep them posted. Their observation was that on a new assembly containing so many parts with varying tolerances it may take 500rds or so for everything to break in well. As stated earlier, they continued to offer to inspect my upper if I sent it to them. I'd prefer to shoot it and observe more before it comes to that. Bottom line was they have been very helpful and forthcoming with information/advise. </div></div>
Thanks, MWM. I did note that you indicated your issues were break-in/complete upper related and not specifically the barrel at this time. My question was more directed to the OP or anyone else having difficulties with the UM barrels themselves. Admittedly, the wording of my question wasn't all that good.
Hope you get your issues resolved and get the upper running full speed.