180 vs 175 gn loads in 40 S&W

[Wilsknife]

I have some 180 grain 40 S&W lead cast bullets. However the heaviest bullet I can find a load for is a 175 grain lead cast bullet. Is it OK to load the 180s with the 175 load? Your thoughts and suggestions please

[Wayne Smith]

As usual, start low and work up. Five grains of lead isn't gonna make a lot of difference, seating depth might if the heavier boolit seats deeper. If you don't have a starting load drop your max load 10% and work up half a grain at a time. Normal procedure, in other words.

[Wilsknife]

Thanks Wayne
It's been long enough since I've done that. I just neede reminding
Any one else have other thoughts on the subject?

[rosewood]

I have done the same. The load data says 175 and my mold says 175, but it drops at 180. I used the 175 data and worked up, nary a problem.

Rosewood

[Wilsknife]

Thanks Rosewood
These are some HSM cast lead bullets, that I bought because I don't have time to cast right now.
Out of the box they are 181-183 grains.
I'll try the 175 load I've been using.

[rintinglen]

Assuming both boolits are of similar profile, Load to the Same OAL, and drop your load by .1 grains