I have been wanting to try these 147 gr coated 9mm pistol bullets I have in my 357 mag and maxi carbine. The bullets measure .356. I also have some of the gas checks made for plain base bullets from soda pop cans. I put the check on the base of the bullet and it just falls of, so I flaired the case and stuck the bullet in on top of the check, without it being pressed to the bullet. What it amounts to is the bullet is .356 dia except for the base, which is about .360 dia. I think it sill shoot fine. What do you think? Wallacm inGa