James A. Kelbly said:
The .068 firing pin is great for not blowing primers, but this can also lead to not letting you know when you have a problem in reloading. If you are reloading incorrectly and a primer would normally blow in a .075ths FP hole and you have a .068th FP hole and it will not blow, then you assume all is ok and continue to shoot a problem load. This is why we here at Kelbly's personally use a .075ths pin diameter tip, to show us when a problem exists.
This brings up another point, picatinny bases and rings, I am really surprised that in true competition that anyone uses a picatinny system. You do know that picatinny systems were designed for military, so that when scope comes loose, you can still kill a man, we call this minute of man. Now I know of several people who have picatinny system and their scope came slightly loose and the shooter did not realize it till much later in match after shooting terrible, and finally scope gets loose enough that shooter finally notices it is loose. Had the shooter used a dovetail system, the shooter would have seen scope was loose after scope starts to move. Problem is solved in first group. Of course you should always check scope screws, especially if driving or flying a long way. They do come loose. Just curious why anyone would us a picatinny system.
Jim