Looks like the answer is no. My opinion is the 300 never had a chance to many other 300's that do the same thing, the 338 to me is interesting 20'' barrel, 308 action, win mag performance but they both suffer from the same thing ruger only has them in the guide gun anymore (I think). Only hornady loads ammo, I think they were trying keep the momentum from the 375ruger going but it looks like it was a flop, they should have just necked down the 375ruger to 338 and 300 instead then they would have had a full line 416,375,338,300 that line up would have been cool.