If one were building an EDGE, or any 338 for that matter, and using the 280 gn Al bullets, do you need some freebore? These bullets are about 1.855 long with a bearing surface about 0.7 inches long. If you seat the bullets with 0.3 inches of bearing surface into the neck, that will leave 0.4 inches outside. Will this require more freebore than using the 300 SMK? Do you even call that amount of bearing surface outside the case freebore? How much of the bearing surface is outside the case on a 300 SMK setup? This also leaves one with a COL of about 4.15 inches. Is that strictly a single shot setup? Thank you!!