bul_blaster

Nolan, Thanks brah. I'll give this a shot.

Good Morning fellas, I run a Bul Radical 5.7 in 40 cal with MBX competition mags. I started with an OAL of 1.18, which run fine in the factory mags, and went down to 1.147. At 1.147, I get feed ramp malfunction every 15 rounds or so when using the MBX mags. The gun shipped with 3x different guide rod springs and I am currently using the heaviest at 16 lbs. I'm using 180 gr FMJs from Precision Delta and using a Dillon 750. I appreciate the help!