"Considering the increased velocity through the rifle, I'm wondering if those loads are good for deer."
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I've never used mine for anything except punching holes in paper, but I'd guess that it would be okay out to 75, maybe 100 yards, maximum. I think there are considerably better calibers for all but short range. I'm not a particularly good shot, but using 158 gr bullets from a bench, I can easily shoot 4-5 inch groups at 100 yards. With that in mind, I think the 158 gr jacketed lead load is accurate enough, whether it packs enough punch out to 100 yards is another matter. I personally would never want to shoot deer with it at much over 50 to 75 yards.