I have a 90ies model 70 winchester model that is a 300 win mag right now. After getting a 300 wsm that shots better then it I have decided to rebarrel it. I have a 338-06 so I thought the best thing to do would turn it into a 375 H&H, Will these fit in the magazine or would there have to be work done to it? from what I can tell the 375 has the same bolt and it about .020 longer then the win mag. Any help would be great.