"...lots of hype on this subject..." Lot of nonsense too. Starting with "milspec" primers being required. Millions of rounds were loaded and fired out of semi-auto battlerifles long before CCI's marketing types came up with the idea of calling a magnum primer "milspec".
Loading for a semi requires FL resizing, every time, and watching the case lengths and OAL. Other than that, it's no different than loading for any other rifle. You don't need FMJ's either.
Hey Skullclown....elaborate on the seating depth for me. I'm just about to do some experimenting with seating to the max lenth that can fit in the mag. And yes I measured the chamber![]()
For primer seating, make sure the primers to not protrude above the case head ( what we call a "High Primer")..........you want them seated flush..........![]()
CCI "milspec" primers are nothing more than a marketing gimmick for magnum primers. Magnum primers burn a bit hotter for a bit longer and are about the powder used. They're made to ignite hard to light powders and extreme cold weather shooting.
You don't need 'em.
Slam fires, never seen one in 30 plus years, are caused by improperly seated primers, not the rifle.
http://www.cci-ammunition.com/products/primers/primers.aspx?id=30Military-style semi-auto rifles seldom have firing pin retraction springs. If care is not used in assembling ammunition, a “slam-fire” can occur before the bolt locks. The military arsenals accomplish this using different techniques and components—including different primer sensitivity specifications—from their commercial counterparts. CCI makes rifle primers for commercial sale that matches military sensitivity specs that reduce the chance of a slam-fire when other factors go out of control*. If you’re reloading for a military semi-auto, look to CCI Military primers.
*Effective slam-fire prevention requires more than special primers. Headspace, chamber condition, firing pin shape and protrusion, bolt velocity, cartridge case condition, and other factors can affect slam-fire potential.