I use the Avery Finisher Gun Sling on my .22/250. I like the comfort of the 7mm stretchable neoprene. The rubber backing stays well on my shoulder -- a great asset on long walks up and down hills. The neoprene features the ABT comfort cushions. These are air cushions that do make for a comfortable fit.
This gun sling adjusts to 48" and cinches down to smaller lengths to adjust to the exact length you want.
Installation is simple with the Uncle Mike's locking swivels. I prefer those swivels on my slings.
This sling also has a thumb loop designed right into the sling for use when walking. This does work nice and is a little nicer than just putting your hand behind your sling when walking.