NitroX,
It is no problem getting 2350 FPS out of a 416 Taylor, none what so ever in fact that is considered the standard load and is listed in most reloading recommendations, but I have never been able to safely conjur up 2400 unless I used a 26" barrel...

I have built many a 416 and 375 Chatfield Taylor and all the 416s would easily go 2350 and that's where they belong. All the 375 duplicated the 375 H&H,..I have no doubt one could get 2400 out of the 416 Taylor, but it would be a very warm load and not condusive to good reloading practice or warm climates perhaps.

I see no reason to own a Taylor anymore, not since the 416 Rem came out, same action, and the factory round is better....