I have been using Lee 356-125-2R bullets in my LC9S for sometime. It doesn't care about overall length. I can load the at 1.160 and they run fine. I've been loading 4.0 grains of Universal. I recently bought a S&W M&P. It won't chamber the longer rounds. Lee loading manual shows an overall length of 1.125. It won't chamber those rounds either. I am going to have to be in the 1.080-1.090 range. I know Universal is sensitive about space. The starting load in the manual for 1.125 is 3.8 grains. What is a safe place to start at 1.080?
Or since the manual lists starting loads for Bullseye in an OAL that will work in the M&P should I give up on the Universal and buy some Bullseye?
Would going to a mold like an Arsenal 358242 with a reduced diameter nose help?