I believe Winchester makes the light magnum loads in standard rifle calibers. How is it possible to obtain mag like performance in say a 6.5 swede or 30.06 without increasing powder charge, chamber pressure etc? I personally have never fired this ammo since I "roll my own". Never heard of anyone chronographing this ammo either. So if it is true, how is it done. I've read over and over about the dangers of trying to "magnumise" a standard rifle round and have never loaded my ammo beyond maximum. In fact I water down 5% or more from max. This ammo isn't chear either. 6.5 swede @ $25.00 bucks a box!