I have a lee metford that was bought as a action by a Scottish gunsmith (anders) and built into a sporter, it was never a military issue rifle, it was built for my great grand fathers brother in law, it was carried by him in the boer war, then came to Canada , Okanogan bc to be exact it fed my grandparents through the depression, and my father aunts etc through the post war years , problem is granddad had a couple cases of ww1 cordite 303 brit ammo and that's all he shot , it literally wore out the barrel, steel wool gets stuck on the eroded portion about 6 inches ahead of the chamber its that rough , I would like my youngest son to shoot a moose with this rifle , strangely enough it still can hit a pepsi can at 75 yards , long story short should I re barrel to 303 brit or re bore to a wildcat on same case ? not sure how deep erosion is at least 30 thou, millwright eyeball guess , collector value and or historic value means nothing to me its a family rifle no more no less , educated answers appreciated , thanks