I'm gonna call up Harrels tomorrow and order one of their sizing dies like I should have done from the start. Their D3 6BRA die has .085" cut off bottom of it, and is setup for the BRA#1 reamer (mine is just a BRA1 w/ a .272nk and .150fb).
Honestly if I weren't being a dumba$$, this wouldn't have been a problem. The decapping pin was sticking out quite a bit (I should have known), but I just assumed it was how the Wilsons were setup (this is my first Wilson sizing die). I didn't really think much about it....tossed my bushing in, screwed the cap down until it stopped, then backed it off 1/4 turn, setup my bump....done
I suspect I had been making contact with the pin for the first two firings, but it wasn't bad enough to notice. What exacerbated the issue was me picking up a 2nd BRA rifle earlier this week. That rifle headspaces .001 shorter than my current one, so I adjusted the die in a thou to compensate.
Today I go to resize all my brass with the die setup .001 shorter than before and suddenly I can't seat primers. Maybe I loosened up the decapping rod on accident while adjusting the die? Not sure. I felt additional resistance when sizing, but assumed it was because I was caming over that extra .001.
Now that I've screwed the Whidden lock ring on there it'll probably work just fine; it should actually retain the bushing, but the rod won't be so close to the case web. That said, I'll use this as a lesson learned and "do it right" with a Harrels.
Regardless, stupid hurts. Sometimes it's expensive, but it's how we learn.