I've been reloading for 30 years now pretty steady and I never use the decapping pin in my dies.
I use the little punch that comes in a Lee Loader along with the little anvil that comes with it. I have no problem with crimped military primer pockets or anything else.
I do it this way so that I can have the primers removed from the case prior to vibrating them clean.
my process is
1. Sort
2. Punch primers
3. Chamfer military primer pockets (if needed)
4. Clean pocket with small wire brush in rechargeable drill
5. Vibrate in mixed Walnut/Corn media
6. Using a plastic freezer container with 1/4" holes punched in the bottom to separate the medium from the cases.
7. Sort checking the primer holes clear if needed.
8. Lube I use a RCBS pad and their water based lube
9. Size and Bell
10. Wash the cases in dish soap and HOT water rinsing very well
11. Place cases standing on their bases on a sheet of aluminum in the oven at 200 degrees for an hour.
12. When room temp Hand Prime them using a Lee Priming tool
13. Charge the cases with a weighed powder charge (moving to step 14 before charging the next case)
14. Seat and crimp the bullet