Originally Posted by cmillett79
You just explained one of my greatest concerns Fitch .. This is one thing that I am thinking about..Honestly Id like to keep the barrel length 26" if possible in the 7mm mag..If I have to go 24" or less I would go with a NONmag standard caliber..I once had a 280 and a 7mm mag .. The 280 had a 22" barrel and the mag 24" .. The difference in vel. was min. when pushing "accurate" loads in the same bullet weight..There was no real world advantage with the mag .. This was after a couple months worth of trial loads .. I believe the 280 in 150gr sierras (neck sized) was only 80-120 fps slower than the 7mm mag with the same bullet but loaded for accuracy.. I think the mag was pushing it at 2950+/- and the 280 was a hair over 2850fps.. This is one reason if I saty with the 7mm mag to keep the barrel lengtrh at least 26" ... I wonder if going with a one contour heavier barrel than factory and adding flutes would stiffen it or maybe having it chryo'ed ?
Chryogenic treatment won't do anything for stiffness - that's controlled by section moment and Young's modulus which aren't changed by chryogenic treatment. The Chryo treatment should increase stability, i.e. the barrel will shift less due to temperature change, but that isn't usually an issue in a 1 or two shot hunting rifle.
Based on what you said, wanting to keep the MV up, if it were me I'd go with a #5 taper barrel. It's a nice compromise between sporter and benchrest.
I have a 7mm Rem Mag Savage BVSS coming (should be here a week from Friday) that has something approaching a #7 taper barrel on it. That's for a rifle intended for hunting from stands - it will weigh almost 12 lbs to 12.5 lbs with scope. It's heavier than you have in mind.