A while back Thunderbeast made me some 35 cal Ultra 7's and I've got a Silencerco 36M.
If you call Thunderbeast and talk to the shop foreman about it, they may make you one. If you're interested I would definitely recommend calling them. They make a 338 Lapua can but it's heavy. My 35 cal ultras weigh 10.5 oz, they'll pass a .419 plug gauge the whole way through.
The 36M is nice. It is a bit heavier but it is also quieter. Unfortunately I have had some consistent accuracy issues with it on 3 different rifles now...a 35 Whelen, 358 Win, and 338 WM. Those issues go away when I put the thunder beasts on. Haven't gotten around to sending it back.
