I've been using an NSD Powerball for many years to keep my hands strong for shooting heavy bullet loads in 44 Mag and 45 Colt (285 & 300gr @ 1050) and bass fishing rods. Works wrist to shoulders. One other benefit - I spent 31 years in IT and never had any wrist/hand issues.
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Reloading For: 223R, 243W, 6.5 GR, 6.5 CM, 260R, 6.5-06, 280R, 7mmRM, 300HAM'R, 308W, 30-06, 338-06, 9mm, 357M, 41M, 44SPL, 44M, 45 ACP, 45 Colt, 450BM.
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