Gas tube lengths for longer barrels.

[bcs4]

There are indeed many variables. After looking at QuickLoads again, it doesn't seem to be able to provide anything that helps. I've ordered the barrel from Krieger and I'd like to specify a gas tube length that's as close to optimal as possible. I think it's complex enough that barrel makers don't want to offer information that could result in something that's undergassed. I can understand that. I went to the "horses mouth" (Alexander) and they wouldn't even offer anything that was longer than rifle length. Honestly though, I'm kinda surprised that there doesn't seem to be a source anywhere online.