37xc works good. I wanted something I can travel easily with, fly somewhere, not pack a ton of gear. I got big stuff to run like 50bmg's, .460 Steyr, etc when I drive to a match. But as far as a 37xc I bought a desert tech for traveling pull the foam out of a short case, lay a shooting mat in there, chassis, both barrels and 50 rounds of 37xc ammo and 50 rounds of 300 norma improved ammo and I can make the weight limit for a cheap check in bag. It's not the most convenient for me, I'm left hand and shoot left handed, but it works. The first 37cx I did was a used barrel I recycled from my .375 cheytac. Wanted to see how the 37xc worked so I re profiled the barrel, cut the larger cheytac chamber off and made it fit the SRS, I had a 32" barrel when I was done and just used up stuff I had. Shot well, got good speeds. So then I took a new barrel blank I had that was a slower twist rate and did some comparison on what velocity they'd run. One 1-9.25 twist and one 1-10.5 twist . Then I grabbed a new blank that was longer to see what another 3" or 4" of barrel would do for speed, what they'd each like for load and how each works when the bullets have to transition. I also did a shorter 23" 6xc barrel for those times there's shorter range stuff, some varmint hunting or something I can squeeze into a trip and want to pack the rifle along.
