While I have taken game with my .358 99 since 1966 I could have done it with some other rifle and cartridge and have done so.

The 99 is an excellent big game rifle. They made a million of them, twice as many as the vaunted M70!

I see 99's in 300 Savage around at shops for about $400. Consider one of those that's drilled and tapped for a top mounted scope and use it as is, so chambered.