I'm tagging in. I hadn't read that about the newer X-Bolts and not being able to switch the spring.I did not purchase a hells canyon to test. I decided against due to the heavy trigger it comes with. If you want below a 3lb trigger you will need to spend about 200$ more on an aftermarket one as it can no longer have just a simple spring swap (or so I heard)
I just bought a X-Bolt Max Long Range and the M*Carbo spring. Should have the rifle early next week and already have the spring. It's a 2019 model, so I guess we'll see.
My google-fu is weak today. I can't find any other reports about the spring not working?