Re: .375 RUM Wisdom
Hicks, I think it is a good option because of all the new high bc 375 bullets coming out. My 378 wby now is a monster at long range. If we had these kind of bullets available 30 years ago me and probably many more would have shot the 378 and not wildcatted the 338-378. The barrel life is quite a bit better with the 375 plus you can shoot a slower twist which gives you a slight advantage in extreme range shooting.
When I did all the work on wildcatting the 300 RUM in the late 90's I did from 7mm through 358. The 338-300 was the best at long range on big game animals at the time. I didn't do the 375 because the bullets were not available at the time for the cartridge to make sense long range. With bullets available now and knowing what I know about the RUM case I would do it in two calibers and those are 338 and 375. As I went from 7mm-358 the best loads used faster powders as the caliber increased. So with the 375 look for it to shoot better with faster powders. I think the 375 is going to look better and better as bullets get better with better availability.
Predictions are difficult, especially when they involve the future