450 Rigby rimless and 460 Wby are perhaps the best suited vehicles for 550-600 grain bullet at +2200 fps, and 450 Rigby rimless would my choice. With the number of companies offering 416 Rigby ammo, components etc. brass for reforming is not going to be very difficult to find, worst case scenario, 460/416/378wby with belt removed could be used. Norma and Kynoch offers 450 Rigby rimless factory ammo.

Questions for all experienced 458 Lott owners, which powder shall be used to get 2300fps with a 500 grain woodleigh FMJ? Most loads I have found are 106-130% in filling ratio or exceed the (CIP) max pressure

Nothing wrong with Dakota cartridges- never got very well spread or picked up by any other maker. Miller & Greiss, and DWM designed cartridges based on 404 Jeffery case long ago. Hopefully the Dakota 76 action will survive.

Kalunga-
No rubber or rawhide mallet in the kit from Blaser?

I know of one case from Zambezi Valley with sticky Remington ammo. Perhaps Remington’s initial batches was loaded a bit to hot, hopefully factory ammo manufactured today is loaded with powders that are less temperature sensitive like ADI. I would not like to venture the hot and humid African bush with ammo loaded to absolute pressure and would rather sacrifice some performance in exchange for reliable function.

Pity that wildcats like 458 African Express, 450 Vincent short, 450 G&A etc., based on slightly shortened 404 Jeffery case never made it into production. 2300-2350fps with 500 grain, 2150-2200fps with 550 grain bullet from 22-24 inch barrel at 60-62.000psi and still short enough to find a standard a mauser action

/Johan