I used a RCBS hand priming tool for 20 plus years, and it works just fine. I have been curious when I read some articles on priming seating depth since my RCBS does not have that seating depth adjustment for seating primers. I just seat them all the way in. When measuring my loaded .308, 6.5 Creed, 7 and 300 Magnums, the depths are .003", .005", .007" deep with about half a thousand variance in between. Does seating depth for primers have any effect on accuracy? What is the best hand priming tool with the seating depth adjustments? Any opinions is appreciated.