I'm curious as to how others work loads up for such as 38 special and 357 magnum.
Im in the process or working up a load using unique and the RCBS 38-150-SWC in 38 special. I can't find data for this combo so I'm extrapolating data. From what I've found data for lead bullets of similar weight is approximately 3.5-5.0 grains.
In the past what I've done is make 5 or 10 cartridges to test at 5 intervals between min and max. Starting at the minimum charge and ending at the max. Then I shoot them and see how they group. If there is one that shoots good, I load a box or two to try.
So let's say hypothetically, I test 3.5, 4.0, 4.5, 4.7, and 5.0. And that 4.5 grains happens to shoot an inch at 15 yards. Should I go to the trouble of loading 4.4 and 4.6 grain charges to test?
Is there a better method to determine a handgun load? What does everyone else do?
Bazoo