i am interested in making a custom hunting rifle in a wildcat cartridge based on the .338 laupu case. The proposed new cartridge is 8mm with 50mm case length. Hence the 850 Lapua. I think this should have a case capacity of approximately 80gr. powder. Is this a workable idea? If so i think this would be a great hunting rifle. Thank you in advance for any tips and/or suggestions on how i might go about this or alternatively whether is not a workable idea.