hoser,

You must remember that a double rifle is regulated for a specific load. Sometimes your double might shoot other loads satisfactorily, but you can't just chamber any old load and "sight it in" like you can with a bolt action rifle.

If you get a 9.3 then it is regulated to a specific load. If you have a second pair of barrels in .30-06 then those are regulated to a second, specific load. Now imagine a gun that shoots Norma's 9.3 caliber, 285gr Oryx bullets AND Federal's .308 caliber, 165gr Nosler Ballistic Tips. That's versatility.

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