I’m glad you posted this as I was wondering. 5/8”? 1/2? And do you backfill slin?
I have back filled before, just don't care to do it. I use both 5/8, 1/2inch will work fine also. 27-29 gauge. I do draw with a 22 gauge. Hell back when I started in the late 80s I'd inject with a 22 gauge. Some still do. Me, I'd look at it now and think it looks like a harpoon.
