i use the 200 grainers that i use for my 45acp- even from the mould, the weights are 205- when i dropped to 180 , i found that i shot "WAAAAY LOW" with the 180's out of my 7.5 inch - a good foot or more- using 33 grains of fffg- you're going to have to get some butcher wrap, put it up, rest your pistol, and SEE WHERE IT SHOOTS- when i went back to the200 and better, i got back to poa-