@HighDesertSage
Only nearly 4 years late, but I may have an answer for you.
I have a Browning X-Bolt .300 Win-mag & experienced a very similar issue. Often times, if the bolt wasn't simply running over top of the next round up in the magazine, it would just barely catch it but then immediately jamb up once the projectile was caught by the feed ramp, as the case rear would fall off the bolt face.
A good way to test if your issue is near identical to mine is to cycle the bolt while pressing upward on the magazine. If it cycles properly, or at least better, you may actually be experiencing a poor frame to stock seating issue.
I say this because I never really dove into the issue, as I primarily hunt paper at a range & tend to load one round at a time.
Recently however, I found a manufacturer that makes an aftermarket stock for that model which has the features I've desired for some time now.
After swapping the stock out for the new one & getting it torqued down, I realized, in the function testing phase, that it was suddenly feeding my dummy rounds consistently.
After loading & cycling several times without issue, I decided to get to a safe area & verify with live rounds. Unfortunately, the area I was in, though adequate for a potential negligent discharge, wasn't suitable for live fire. The live round testing wasn't quite a thorough successful. However I'm fairly certain as to why. Though I didn't experience a single feed issue, assuming I'm accurate in my thinking, it seems as though the weight of the unspent rounds might be more than the extractor & ejector can handle without pulling the bolt as though I'm attempting to start a weed-eater or something. That being said, I don't expect to encounter any issues whatsoever once I make it back to the range for a bit of paper stalking adventure.
At any rate, I hope my experience will help you in identifying the issue and guide you to a solution.
Best of luck!
