Originally Posted by coonhunter
Can someone tell me the advantage of 3 and 5 groove barrels. I am sure there are advantages to each just not sure what they are for each.
After having several I can say without hesitation that there is no advantage EVER to a 3 groove barrel, they might be OK with a solid but they are rough with a jacketed bullet. A 4,5 or 6 groove is a better choice 10 times out of 10.
The philosophy behind the 3 groove is that throat erosion is retarded because the lands (riflings) are wider than on a 4,5,or6 groove barrels. but firecracking of the throat begins before erosion, so with a 3 groove barrel your accuracy will go away faster because there are wider rougher surfaces in your bore than with a 4,5, or 6 groove.