On the Winchester short magnums, the case is optimized for 30 caliber.
The further you go away from 30 caliber with that case, the less efficient it is.
The single most serious problem associated with the short magnums is that many gun makers chamber them in barrels that are either too short, or way too short.
Twenty-four inches should be the minimum there, and twenty-six inches would be much better. Since most short magnum rifles are manufactured with barrels of minimum size or less, they are louder and less efficient than they could - and should be.
A lot of this stems from gun-writers who should know better, touting the short magnums as the perfect match for "compact" rifles - just because they can be shoe-horned into short actions.
Put a compact magnum in a regular action so that the heavier bullets associated with long range shooting and big game can be seated out, then use a 26" barrel - and you've got something good.
But none of the manufacturers do that.
Kind Regards, Salvo
When you are dead, you won't even know that you are dead... It's a pain only felt by others.
- Same thing when you are stupid.
Last edited by Salvo; 04-21-2013 at 11:33 PM.