P - 150 gr is just a waste of powder. I haven't found a ML yet that doesn't shoot its best with 110 or less grains of powder. Of course there are exceptions. Too bad you didn't come on this forum prior to purchasing your Impact. Not that the Impact is not a good ML because it is. But you would have found that there are a lot of guys in here that shoot CVAs - an shoot them extremely well without any issues.
Maybe when you get a few more years behind you, you will be like us older guys that take what those so called experts say with a grain of salt. A lot of it is just promoting a product for financial gain or they just don't know what they are talking about.