Thanks a whole bunch for the info and video. You and the other experienced shooters are really helping a neophyte like me get into LRH. I was especially excited that your rifle is a Weatherby MV. It looks as if it may have started off as an Accumark. What was the original caliber? I hesitated rechambering mine, which began life as a 340 WM, to a larger head size such as the 338 Lapua or the 338 Norma. I an not to familiar with upsizing a standard magnum action/bolt face/magizine well to one that can accomodate the larger head size cases. It seems as if an original 378 case size action would be an easier conversion, but I asked my gunsmith to check in to the feasibility of such a conversion after watching your video today. I AM HOOKED.
Bill, I am not positive but I think mine started life as a 340. I don't think Weatherby made a stainless 378 based action. The Mark V will cycle and handle a Lapua 338 very well. And stepping up just about any 9 lug Matk V action is an easy process for a smith. Open the bolt face, install a 378 extractor, lengthen the bolt stop and change the mag box and follower. No biggie! I do like mine, it has done me well.
Thanks again for the info. I'll pass this on to my gunsmith tomorrow. He is pretty good and will be able to handle this conversion. I think that the 30-378 and 338-378 Accumarks had an SS receiver, but maybe not. I'll keep you posted on how the project goes.