I thought I had this issue solved with my Delta Elite and MP 165 grain TC boolits. I loaded up several hundred and put them away. Today I decide to shoot it a bit and the rounds will not feed reliably. Boolits are seated about as deep as I can get them with just enough crimp to remove the flare. Very light load at 1042 fps, using a 18.5 lb recoil spring. Wilson full length guide rod and shokbuff has been in the gun since new and never had any reliability issues until I started loading this Boolit. A 20 lb spring will overcome the feed problem but my old hands find it very difficult to work the slide.
The round hangs up with the nose into the top of the chamber and the case jammed against the barrel feed ramp. I can see the dent on the case where it hangs up. The barrel is well broken it...over 5,000 rounds of jacketed but mostly the Lyman 401638 which has a rounded nose and feeds reliably. The MP has a sharp nose to it
What's a guy to do???