.303

Regulate the irons for the Woodleigh 215 or the Remington 180 RNCL {the latter is really an under-rated but super bullet}.

Quick detachable scope mounts, definitely.

Set the scope up for the 150 grain Hornady Spire Point for a single-shot {forget double regulation if you must}. Super bullet as I've tested it.

Let the world tell you that thing is a short range rifle ONLY and then go ahead and kill all the US game you want at out to 250-300 yards.

You won't regret it.

With the need for a house remodel, new barns, kids in college and taxes on the horizon I can't see myself doing anything double-like for a long time, but if I did, I would, and this set-up would definitely be in the top running.