I think Bonanza is correct!

The smaller caliber bouble would be pricier and somewhat range limited vs a cheaper semiautomatic bolt.They would be less weather tolerant as well.Most americans would think them less practical and more of a safe queen.I think they would be even less popular than the Drilling combo's out there!

I guess it comes down to the most popular "big" game hunted-whitetail.Most americans would think percieved advantage with a rifle with one barrel vs 2 as lighter and handier and cheaper.

Where would the smaller Double calibers have the advantage?I would think against cougar and pigs at closer ranges where a fast 2nd shot is at a premium.

And as 500 grains has said in America the Double rifle is only thought practical for big dangerous game.For 95% of the hunters no such game will ever be hunted!! Indeed in the states I will admit I wouldn't want any Double smaller than a 9.3 x 74R.Saying that I do feel the 9.3 caliber would be neat for black bear, elk, moose,pigs,and scaring up whitetail/mulies.

A 9.3 is definitely on my want list!! Very Classy and unique! I think it may be the most popular Double cailber sold for hunting game here in the States!!