I just picked up a new to me barrel for my 338-06. It is 24" and about a #7 contour or close to a Savage varmint contour (HEAVY!) Total weight of the loaded rifle with sling is 11 pounds, 3 ounces. I want to shed a bit of weight so I am thinking of getting the barrel cut to 21.75" and recontoured. My question is, how light of a contour is safe in this caliber and how much weight do you think I will lose by getting this done?