Thinking about a future elk hunt. Do not plan on buying another rifle. Of the ones I have the most suitable look like a .280 (Rem 700 Classic) with 3X9 leupold, a .380 (Kimber Montana) with 2X7 leupold, or a .350 Rem Mag (700 Classic) with 1.5X5 leupold. All have 22 inch barrels, all will shoot 1.5 in or less a 100 yds (all will group at least some loads into less than an inch). The Kimber .308 is my current go-to deer rifle, but I have hunted with the others. I have a rangefinder, should be OK out to 250-300 yds, not comfortable thinking about longer shots - no practice/experience at real long ranges.

So...recommendations? opinions? experiences?

Please stick to these calibers - I'm not buying another rifle!