I have had bothe the 454 and 480 in both the SRH as well as the 12" Encore

I think I liked the 480 the best--The 480 SRH was a cool gun and all the power anyone needs.

The 480 had a bit more bullet drop but --just plan to shoot 100 or less with the 480

JMHO go 480

If it jams force it! If it breaks it needed replacing anyway.