I have finally gotten a chance to do some shooting with my Henry H015 now that primers are a little more available, and I'm not completely satisfied with the accuracy I'm getting out of the little 125gr boolits (Accurate 36-125L, NLG version) I'm using when pushing past 1100fps or so. There is certainly room for me to adjust the load, change powder, etc., to dial things in with this particular boolit, but it did make me think about situations with other designs where they were just accurate with practically every powder, charge weight, and OAL I tried until I got to pretty stupid velocities. Some boolits just seem to be easier to work with.
The most accurate load in this Henry so far has been 11.5gr of Lil'Gun and an Accurate 35-245P, which was almost one ragged hole when shooting from the back of a folding chair, but that's probably into "+P" territory and a bit heavier than I want for a general purpose load.
So, what boolits are easiest for you to get accuracy out of in a 357 mag rifle?
Are there particular design features that seem to help?
Have you had better luck with heavy designs or light ones?