Beyond 10 ft I do not think they would be effective at killing much of anything. Also, in the Speer manual if they are loaded to hot the pattern will spread to fast and will not work well.
Apparently what I did on my test rounds was I had crimped them some but then when I came home and in haste I turned the crimp down to far like there was no crimp at all and that's how I cracked them. Next time I am loading 38 specials I will try some more. I only tried 38's as I figured it would be a good pocket carry. We have pygmy rattlers (there are some full sized Diamond backs but not common), Water Moccasins and Coral snakes. For actually trying to kill something a 44 or 45 shot shell would be a lot better.
Last summer up in Georgia I saw the biggest Rattlesnake I have ever seen, I would only attempt to kill that one with a 12 gauge!
Apparently what I did on my test rounds was I had crimped them some but then when I came home and in haste I turned the crimp down to far like there was no crimp at all and that's how I cracked them. Next time I am loading 38 specials I will try some more. I only tried 38's as I figured it would be a good pocket carry. We have pygmy rattlers (there are some full sized Diamond backs but not common), Water Moccasins and Coral snakes. For actually trying to kill something a 44 or 45 shot shell would be a lot better.
Last summer up in Georgia I saw the biggest Rattlesnake I have ever seen, I would only attempt to kill that one with a 12 gauge!