The spitzer/rotary mag thing seems to be the issue. Apparently the use of spitzer rounds creates an OAL that is just a tad too long for the rotary mag, the rounds get all hung up, the spindle cant rotate and it creates a mess. This is why im wondering if a simple solution to a headache i havent experienced yet is to seat the spitzer rounds a little deeper, in an effort to keep the rotary mag happy.
I ran into this when I started reloading for a premil 99F in .308 using 150 gr. Sierra bullets. The rifle had functioned flawlessly with factory ammo, but with my reload at 2.800" OAL they jammed up. The problem wasn't immediately visible so I spent some fruitless time adjusting the magazine spring before I discovered the problem. Seated to 2.750" worked just fine.
