My brother in law just bought a bunch of 158 gr LSWC bullets, and gave me some to try. I've never used anything but jacketed round nose, and when I seat these new bullets, it goes in very hard, and wont chamber in my revolvers or levers. There seems to be a bulge where the bullet seats in the case. They measure .358 compared to all my other bullets at .357. Is there a trick to using these bullets that I am not doing?