by Hoot » Fri Apr 16, 2010 8:37 pm
Well, I gave it the college try, but the 230 gr Plated Berrys and the 230 gr (non-magnum) XTPs are out.
In the case of the Berrys. With only 1/2 caliber insertion depth, After the taper crimp, they were tight, but after the FCD, they were loose enough to rotate a little to and fro. I could actually pulled a few out with my fingers. I suspect the soft lead and thin jacket lack spring-back. Like crimping wax. All I can see here would be the potential for taper crimping with an adhesive sealing compound like you see on military rounds. In that case, it would be hard to "calibrate" the amount of adhesive to use for consistent, reproducible results.
In the case of the XTPs. With about 3/4 caliber insertion depth. Like the Berrys, the taper crimp yielded a firm seat, but after the FCD, they too were loose enough to wiggle a little to and fro.
Though the Berrys came out easily in the inertial puller, the XTPs took quite a few whacks to dislodge. While the XTPs were restrained well, that fact that I could rotate them a little to and fro did not give me a lot of faith in their ability to hold back the expanding gas before breaking free of the brass.
As has already been said numerous times, thick, springy jackets and full caliber insertion depth seems to be the order of the day. Hey lead guys. Do your bullets wiggle a little after crimping them with the FCD? Is that okay if they're physically restrained well enough?
Got the truck all loaded for an early trip to the range tomorrow morning.
Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.