Ernie,
I was hoping that you would catch the post. As I know that you have a lot of experience with these pistols. My striker does indeed have a muzzle break. Up to this point I was shooting 125gr. Ballistic tip Nosler’s. But funny that you suggested 155 gr. Because I have 300 on their way to me right now. I did notice that the 125gr. were losing consistent accuracy at this range. Which lead my to believe that a few more grains would help with this.
Thank you for taking the time to get back to me. I really appreciate all your help!!