I don't normally crimp my rifle rounds, with the exception of the AR-15 stuff. I've got a Remington 700 XCR chambered for .223 and I'm just now getting around to working up some loads for it. I ran into what I think is a neck tension problem. I don't know if it's the brass that I'm using (probably is since a lot of it is range brass) or what but toward the end of my reloading session I found out that I was able to seat bullets with my MIC gauge. I load AR-15 rounds on a Dillon XL-650 and the last stage is a crimp die. I pulled it off of the Dillon and used it to crimp my rounds. Some of them crimped "hard" and some of them felt like they didn't even touch. All are seated to the same depth. Bullets were Berger and Sierra. To be real honest, I normally load much larger calibers. .270, .284, .30, and .338 so .223 is new territory. I don't particularly care for the AR platform but I have a couple since they are a lot of firepower in a small package. I bought the XCR last year for a coyote gun and haven't had a chance until now to play with it. I picked .223 to go with the AR's. Yesterday, I put 5 rounds into a hole the size of a dime at 100 yards with the XCR so I can see that the rifle will be fun to shoot varmints with. I just need to figure out what the deal is with the neck tension issue and work up a decent load.