One of the threads on AR at the moment has a few blokes with chronograph results of Federal 470 Nitro ammo and that was all around the 2050 mark.

In two different 458 M70 Push Feeds I had 70 grains of ADI 2206 did 2030-2050 with 22 inch barrel. I also got the same with ADI 2207 with 60 "something" grains, I cant remember exact load. That was with 500 grain Hornady soft points.

I don't where you come from but if it is America ADI 2207 is like 4198 and ADI 2206 is like 3031.

Mike