It is been in my head for a while and I want to add a new cartridge in the gap between these cartridges. Currently I own: * 6BR - target shooting/close range deer (0 to 600m) * 6.5x284 Lapua - target shooting/long range deer/short range moose (0 to 1200m) (when the barrel is worn out, I'll replace it to 284 Shehane) . . * GAP??? - target shooting/deer/moose/black bear (500m to 1500m) . . * 338 Raptor (future project) - target shooting/long range moose (1000m to 2500m) I have Savage 12 F-Class Precision Shooting rifle (6.5x284) and I plan to order 2 barrels for 7mm and 338. Also replace the bolt head from .473 to .588 I was researching all short magnum cartridge that will fit in short action (single load), like 300 WSM, 325 WSM (no 338 WSM as of yet), 8.59 Galaxy, so on.... I thought about it and in my mind said "what the heck" ......can I try with 338 Lapua or 338 Excalibur brass and push the shoulder down to similar to 300WSM. (up to 1.7 to 1.8 at the shoulder). It will be bigger and taller than 8.59 Galaxy and 300 WSM. What should I call it? Something like: 338 Baby Raptor, 338 Mini Raptor or 338 Raptor Short Mag. To my confusion: 338 Excalibur rim dia is .580? 338 Lapua rim dia is .588 I just thought that Excalibur brass is wider than 338 Lapua. I did adjust the "prototype 338 Raptor SM" for comparison.