I expect that the pistol in question is a Kahr Auto Ordnance. The US Army didn't have anything to do with it. Does factory ammunition pass the "plunk test"?

In addition to what's been said above, read the directions on how to adjust your seating die several times and make sure you've properly set it. It's generally been found that taper crimping is best done as a separate step, rather than as part of the seating operation. This is particularly true with lead bullets.

If you are taper crimping as a separate step, a quick and dirty way to set the die is to use a factory round to establish the proper crimp. Just run the crimp die down until it stops on the factory round and lock the adjustment there. BTW, a separate taper crimp dies is relatively cheap.