I got PJ's 7X30 barrel in a trade a few months ago. PJ told me of a friend of his that shoots 175 gr. bullets with his 7X30 with great success. So I tried 154's, 162's and 175 gr. bullets just for the **** of it. I also had lot of 139's on hand. I get my best groups using the 175's. Everything I shoot in this barrel gets great groups but the 175's are far superior. Now I have heard that they may not expand well if at all. But for punching paper or knocking down tall buildings they are just great. I was just wondering if any of you folks shoot the heavier bullets with your 7X30's?