Have to be in full agreement about the .35 Brown-Whelan.Have had three of them and they come within a few percent of the .338 Win. or I would imagine the .358 Norma.Swift does make a 280 gr. A Frame .358 that would get the attention of just about anything,I would imagine somebody makes solids, also.
Case forming the B-W is not bad as there is .35 Whelan brass readily available.The ones I worked with preferred any 4350 powder and good 250 gr. bullets hard to beat.