I sit here inside with deer season slipping away and contemplate what I can do for gun fun during the cold gloomy days of February--

Yowsers!! Maybe some crude test of stopping power management for that 375,416 or 458 Bolt vs the big Double--

Others have suggested two targets, one maybe 35-40 yds and then another maybe 45 degrees left or right at 20-25 yards.
Shoot long within an 8inch pie plate then again at shorter yardage.

Yes I know the bolt gun will be slower but what time is practical to determine adequate rifle control/stopping power management?? Two seconds or less?? 2.5 seconds, 3 seconds??

One would think that such a crude test could be timed to determine ones best with any caliber(22 and up) and then measure the big boys!!
My gut tells me that among big bores the 375H&H is gonna win vs other bolts, but that the Double may tie or beat the 375H&H handily---A 450/400 Double may be the fastest big bore of the bunch!!

Any further suggestions or am I way out there in never neverland??