Here it is in the rack on my CSMS Slug gun and then I switched it to a .375 Brush. I don't own any e's. I think it would work.
Why a sling? Multiple Reasons:
- Walking to your stand in the dark hands free
- Attach a pull up rope to it to get in your stand and then pull it up
- Using it to create multiple points of firm contact to steady a shot if you don't or can't use a rest, like a running shot
- Carrying your gun while dragging a deer out of the woods