Ratel,

Even if you can get 416 Rigby ammo "off the shelf" in "any?" a gunshop,
if you own a double rifle in 416 Rigby that DOESN'T MEAN that the
416 Rigby ammo you just bought will shoot to the Point of Aim in
YOUR Double.

It also doesn't mean every gunshop will carry 416 Rugby ammo.

I would suggest you get a bolt gun or if you do buy a double in 416 Rigby
you'll have trouble selling it.

Finally, if your concern is Ammo Availability, then employ someone
like Superior Ammo or one of the other custom ammo makers in the US
who will work up loads for you and your gun and then when you want some
more just phone them up and they will ship you some more.

You have it much better than everyone else in the workd regarding availability
of everything.

500 Nitro