I sent the barrel back to LaRue. They inspected it, test fired it with my bolt and said there was nothing wrong with it at all. Who knows how much measuring they actually did but their customer service was quick to respond more and happy to take the barrel in and look at it so I’ll give them that. I already sold the gun because I’ve moved onto other projects like I do with things.
But maybe if I just tried some different dies like small base dies maybe I would’ve never even noticed the issue. I’ll never know.
That is typical nomatter who does the work...the headspace IS correct, but we already knew that.
The problem is elsewhere as already explained...in the actual chambering, but will not hurt the functionality of the firearm as I already stated.
Here's what you do ...
DO NOT GET A SMALL BASE DIE IT WILL MAKE THINGS WORSE.
If anything just buy a cheap Lee FL sizing die, and polish the die out in the head area to make it slighty larger. DO NOT POLISH THE SHOULDER AREA or much of the body area just a blend....the case bulge is where you polish.
And this takes that diameter down enough to chamber easily in that chamber only.
So no big deal if the bulge is .472" and everyone else is .470" as long as the reloaded cartridge chamber freely in this firearm, but may have a bit of trouble chambering in another gun.
BUT BEFORE DOING ANYTHING...use this lube Lee Resizing lubricant ...applied liberally as shown.
Put in your press with the FL die you have.
Pump the press handle up and down 3 or 4 times as it gets near the top of row stroke on the oversized area of the case. Pump the handle until you reach the top and hold at the top position for a second.
Experiment here it may take 6 pumps to bottom out and hold for a second.
Or just 2 pumps as the die and lube work in harmony to size your case.
Then go have fun shooting your reloaded rounds that will most likely fit other chambers, but be over worked in your chamber sizing and firing cycles may shorten brass life...but it works
That's why polishing out the die a thousandth or so to help over working the brass in this area that's all, ...and ease of sizing a by product.
I like dies that have a bleed hole in the shoulder area, but wipe any lube off the shoulder as shown to prevent dents.
This will work guaranteed!... then go have fun shooting your gun.