Congrats on the new gun!
I don't have anything longer than 6" barrels in my arsenal but my M19's like 5.3 grains Universal and a Fed GMM Mag primer under a 158 gr LSWC. The chrono data I've got on that load is using a 6" barrel- 994 fps. Out of 8 3/8" barrel that would probably go up to 1050+. It's a pleasure to shoot not a lot of recoil.
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Andy
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