To begin with, I shoot a BSS that has had the springs greatly reduced, and had a good deal of issue with most American Shotshell primers. I couldn't make 50% of any Federal primer go off.... whether reload or new ammo. I generally load Remington hulls. Of all the US primers, the Remington worked the best for me... however I still experienced a lot of FTF. The issue was MY GUN, I am fully aware of that, but I liked it and didn't want to change it. So, I started loading Euro primers which are a little larger in diameter. They don't load quite as deep, leaving the primer just a tad higher and allowing them to receive a better hit from the firing pin. I have NEVER had a FTF since changing to them several years ago. I have a pretty good stock of them, but always keep my eye's open for a few more when they come up for sale. When I purchased my last supply, they were $23/1000 so I got a few.