A 500 gr. 458 at 2200 is all you will ever need so your in fine shape...

Mickey,
Have you lost it? My 470 Searcy will send a 500 gr. bullet at 2247FPS, 10 shot average plus the fact that its .475 not 450...Most Lotts will churn up 2300 to 2350 or more as will the Ackleys and others.....

As a side note the 458 LOtt will do a lot more than any 458 Win., and if you tune it down to 2100 or 2200 it will do it at less pressure....