I agree with Mr. Longbeard...some people think alot of themselves and their guns. I would have to see it to believe it that 30 of 50+pellets hit the kill zone at 40yds. I'd bet to say that that doesn't happen at 10yds.

I know there expensive but if you are willing to spend some money get you a rhino choke. I have one in my Browning Gold 3 1/2 and one in my870 supermag3 1/2" w/ 24" barrel. I shoot 3 1/2" Remington Nitro #4's. At 40steps it will consistently put 15+ pellets in the kill zone.At 15steps you can't distinguish what's what.I like the Rhino's but there are others that are probably cheaper and do just as good or better. I'd suggest getting a couple of chokes and different loads and seeing how they do. Keep the best one and sell the others on ebay or on here or something. Good luck