I just aquired 4 box'x of 400 grain Speer .416 Africa Grand Slam Bullets. Has anyone had any experience with these? I'm thinking of using them on plains game in SA There were alos 4 box's of the same in 500 grain available but I suspect case capacity could be a problem here? I think both of these are discontinued items from Speer?

I tried some of them in different rifles a few years back. They never shot well from my rifles and so never went hunting.

Sell em, don't waste your time shooting them.. PG and Barnes 350g