300BlkTalk

Welcome to the forum! As I read it, the unspoken assumption in your post is that jump to the lands is the single most significant factor to control in ordre to maximize AR-15 precision. I thought so too when I first started down the .300BLK reloading path, but like Rebel said, there's not much you c...

Happy Thanksgiving and congratulations on your purchase! Here's hoping your ATF wait time is short but still gets the job done.

(Like my Johnson )

...and please post pics!

Lehigh recommends 2.210 for COAL not 2.20 I was going to correct that but checked and it's true. I have some Lehigh load data from July 2015 recommending 2.18". So they lengthened COAL at some point in the last year or three. Interesting thing is, the SBR charge weights to make 1050fps are exactly ...

I second Dellet's 1050 recommendation. Your MV variance seems a little high to me at 25ish, I'm averaging 16 or so with IMR [email protected].18", and my production load averages 9.0fps, so it might be worth some more experimentation with COAL/charge. Regardless, I approach the question from a statistical pers...

My load data also shows W296's best range to be 97-100% fill to get the lowest variance in MV. I determine case fill by taking a fired case, filling it with increasing weights, plopping the bullet on top and measuring COAL, about five times at each charge weight. Then I plot the averages in Excel. (...

One of the first cassette tapes I ever bought. Funny how nothing about human nature has changed, it's just been amplified thanks to the internet.

This article's appearance sure is timely: http://www.bbc.com/travel/story/2019062 ... an-english

To explain the coincidence, I'd say it's apparent the BBC follows Rebel's 300BLKTalk posts...

Assuming you're having this problem with supers... yes? Does it also accur with subs? Building on dellet's diagnosis, I'd turn your adjustable gas block all the way to zero and start testing by opening it in small increments until the action cycles. If you're still getting stoppages then it might be...

Wanted to share this excellent instructional video that is orders of magnitude better than anything I ever saw back on active duty:

https://www.youtube.com/watch?v=wMIBUIN30yU