Played around a bit yesterday with the new Whelen. 2 shots with each load to make sure they'd go boom and see what the speeds were.

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Horny 158 JFP's used with CCI-200's

13.0 gr Blue Dot - 1,305 fps

16.0 gr Trail Boss - 1,560 fps

19.0 gr SR4759 - 1,150 fps

The SR4759 surprised me with how slow it was going.