Google and problems.
re the "google" comment, I'll refrain from answering.
The problems with the Cheytac case are many and finding actions to fit the Cheytac is a challenge each and every time. I've chased them around the US more than once.....
The problem with the base .416 and Gibbs cases are they they are mfgd as low pressure cases. I've thoroughly explored the capabilities of the 338L case, have blown it up like a balloon, and while it's a beauty case, easy to make, maintain and shoot, I'm looking now for more energy. It's just too small. I've got one going out this week that's about the peak of the art. 280-300gr bullets at 2750-2800 fps in a short 10lb carry rifle that will hold 1/4moa in controlled conditions, 3/8moa in the field. Recoil is insignificant, I shoot it free recoil, so now I'm just wanting to push that envelope some more. As it sits this velocity will ethically take an elk at 1000+ HAS taken many elk. But the chunks just don't fly at that range, it doesn't knock them down. A Cheytac will knock them down....... if you can hit them!.....I want to see 3000fps in a 338.
A 50BMG will knock them down, and a hunk of the mountain with....but the gun weighs too much.
The problem with the 50BMG case is that most ACTIONS weigh more than the rifle I'm spec'ing and the lightest one on the planet (McMillan) is almost nine pound the ACTION....this is the only problem, weight.
I'm making a big 338 for the new Barnes bullets. More energy than the 338L, less weight than the 50BMG......and while I've kept abreast of the CheyTac mess it's just not a train I want to board. My next foray looks to be into blowing up the 378 Weatherby case, hoping for 132-135gr capacity in a STOUT case....
al