My preference would be the 18 1/2 inch barrel in the 358. The handling on these little carbines is great and generally they are slightly more accurate than the 22" barrels. If I were going to go with a 22" barrel, I would go with a 35 Whelen for the extra options as far as velocity, you can easily down load it to 358 ballistics or load it to its potential for added umph if needed/wanted. Hope it works for you.