I just had gotten 1000 MagTech 7 1/2 pimers from a friend. I am using them to reload once fired Lake City 5.56 cases. I use 24.5gr of W748 powder, and 55rg Hornady FMJ-BT w/c bullets. The cases are swaged with the Dillon Super Swage, and trimmed to 1.750.

I have reloaded 300 and have noticed that the primers sit deep in the primer pockets. Is this a problem? I do not think they are deep enough for the firing pin not to strike them. I normally use CCI 450 primers and have not seen this before.