I have a Borden Timberline .300 Win mag. that shoots lights out with every bullet I put through it. Any reason NOT to re-barrel it to a 7 of some sort? I don't hunt elk with a rifle and I love the .284" bores. I currently have a Gordy Gritters built 280 Ackley.

What 7 on a magnum bolt face?

Why is it called a double u, should'nt it be called a double v?