Take a look at your Base pin. The newer style require a pin that uses a spring inside it. It may have one. Also the transfer bar could prolly stand to be polished. This is done on the firing pin side. Just polished and a slight taper at the top portion.
I had to hold the muzzle up on one Ruger just to cock it each time. It can be repaired.
Timing was also an issue and once everything was addressed it worked perfect.

I also suggest that you shoot the jacketed for now and start dealing with the changes after season.

Charles