I'm using LCN in 9mm for my new M&P. I usually set the OAL to 1.140 or there abouts. This worked fine for thousands of rounds through my Sigma and my CZ85B. It seems the M&P doesn't like it. The 'shoulder' of the cone hits the barrel grooves and won't let the slide close completely.
The bullets are .356 diameter, which is right where they are supposed to be. I put the three barrels side by side last night and the rounds slid in and out of the Sigma and the CZ, but bound up in the M&P barrel.
I think I'm going to try setting the OAL to 1.125 as per Hogdon's load data on their web site and see what happens.
Anyone else experience this issue with LCN bullets in their M&P? If so let me know your suggestions!
Figure R
The bullets are .356 diameter, which is right where they are supposed to be. I put the three barrels side by side last night and the rounds slid in and out of the Sigma and the CZ, but bound up in the M&P barrel.
I think I'm going to try setting the OAL to 1.125 as per Hogdon's load data on their web site and see what happens.
Anyone else experience this issue with LCN bullets in their M&P? If so let me know your suggestions!
Figure R