Re: range different RUM cartriges!
Unless its a 98 of modern manufacture, I shy away from the RUMs.
As far as other cartridges to consider for fox, seal & deer I'd suggest any of the 06 family of cases(270, 280, 6.5-06, 25-06)
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!