RE: How many stick to one load?
There are some that are HUNTERS and the gun,scope and bullet are just their tool they use when hunting.
Then there are SHOOTERS who are right into all the different rifles and cartridges and bullets and powders and such. They hunt as well cause that is after all what their guns and stuff are for. (other than paper targets)
And there are lots of combinations of HUNTER /SHOOTERS.
I would guess the HUNTERS who look at bullets as just part of a tool they will use, would get a good efficient load and stick with it. The SHOOTERS are always looking to see what is new and what they can do with it.
Robin down under