I just picked up a sling from Mike a few weeks ago, a Quick Cuff for my Remington Sendero. I haven't been able to take it in the field or the range yet, I have only gotten to do a lot of dry fire practice with the "targets" being about 200 yards away. I plan on taking it to the range on Sun, and hopefully coyote hunting
in the next 2 weeks.
I took two of my rifles, the first being a Vanguard in .30-06, with a Leupold VXII 3-9x40 in a laminate stock with a Harris 12"-25" bipod mounted, and my Sendero in .270 with a Nikon Buckmaster 4.5-14x with the TIS sling mounted.
I set both scopes to 9 power, and took a seated position, and tried both out. The "targets" were knots in trees @ 200 yards, and intersections of branches/twigs, and after several dry fires of each, I switched the sling and the bipod off their respective rifles, over to the other.
I was actually a bit surprised at my results. While the bipod was more stable, it was only by a small amount. I was actually expecting the bipod to be significantly more stable, but the difference was really very little.
What really impressed me though was that I was able to get into position faster, and quieter with the sling, than I could with the bipod. I should mention here, that while I had a safe back drop, I didn't want my neighbors seeing me with my rifles pointed out the window, so I had the blinds closed, and only had a narrow 2-3" wide opening to practice through. Kind of like shooting through obstacles in the field.
I found that from a standing position, I could drop down to a seated position, clip into the sling and get on target faster than I could swing down the bipod legs, extend and lock them, and get on target. Clipping into the sling was also quieter.
Beyond that, I also had an easier time adjusting my position, and I had a bit more flexibility when it came to my position than I did with the bipod.
I have also now practiced dropping down into a solid prone position, without adjusting the sling, and that's proving to be very solid as well, although I have to have to be at an angle to the target rather than straight on to it.
I am not going to get rid of my Harris bipods, (actually, I have a 6-9" swivel coming this week for my sendero), but I think the combination of TIS sling + the bipod is going to be the best combo for me, especially since I don't want to carry two bipods with me when I hunt or target shoot. As soon as money allows, I am going to buy 2 more slings, one for the Vanguard, and one for my .22lr Savage trainer.