Barnes XPB 200 gr #30554
H110 will provide best results for your listed powders
Most accurate powder I have found for this bullet is #9, velocity will be just under what H110 produces by about 40fps in 7.5" gun but suspect won't be that out of 3.5"
Barnes XPB 275 gr #30548
H110 for powders you list
Lil gun produces highest velocity, but for accuracy I prefer Enforcer or #9. With this bullet I don't see big accuracy spread for any of the suitable powders for 460 cartridge.
Cleanest burning powder for either will be N110.
H110 work well across the board with any type bullet or weight and almost always will produce highest velocity.
For bullets 300 grains and heavier 4227 is a great choice- my go to currently for 300 XTP MAG
4198 works well with very heavy lead bullets 395 grains to 740 grain but most of these bullets can only be used in the BFR with its 3 " cylinder and its faster twist rate.
Suitable common powders (US) for 460 are A9, 2400, Enforcer, N110, H110, Lil Gun, 4227.
Powder which are suitable under certain conditions would add 1680, Tin Star, Trail Boss, 5744
Powder I have not personally tested which may work are 4100, 300-MP
Hope this is helpful
Be safe
Ruggy
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