I have a savage model 12 with a 26 inch barrel in.308 caliber. The twist rate for the barrel is 1 in 10. After cleaning the rifle the other day, I looked through the barrel just to see what it looks like. I wanted to see if it was clean. I noticed the rifling is the full length of the barrel. How is the twist a short distance and the rifling the whole length of the barrel? Seems to me, the rifling would only be 10 inches, since that's the twist rate. Who knows about this one?