The Remington's have a slightly different shape than the other brands, so you can't necessarily use numbers from others. When you look at the bullet, the cylindrical rear portion that is the full .451" diameter is called the bearing surface. The front edge of the bearing surface for any jacketed bullet should normally stick out about 0.020" from the front of a case. Make one that way, then measure the COL. That should work. Load over 4.2 grains of Bullseye to have the old standard load for mimicking commercial match ammunition.
