.17 Hornet- .17 Ackley Hornet (Same?)
How close are they?
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From an online article about these two cartridges in Real Guns:
The original wildcat, the .17-22 Hornet, retained the long sloping 11? 16' shoulders of the .22 Hornet, but extended them until they closed to a neck diameter appropriate for a 0.172" bullet. Ackley's improved version, and others like the 17 K Hornet, straightened the case, sharpened the shoulders and lengthened the neck.
In approximate comparison to the 17 Ackley Hornet, the Hornady release has a shorter neck by approximately 0.025", larger diameter shoulders by approximately 0.010" and shorter in overall case length by approximately 0.040". Capacity is approximately 2 grain greater and a Pmax pressure is 4,000 - 5000 psi higher.
c 2013 Real Guns
The new 17 Hornady Hornet is very similar to, but not the same as the 17 Ackley Hornet wildcat. The Hornady has more body taper, a 25 degree shoulder (while the Ackley Hornet is 30 degrees), a longer neck and a slightly shorter overall case length.
The Ackley Hornet is a full length Hornet case, approximately 1.400". The Hornady version uses a case approx. .060" shorter or 1.340", to supposedly to keep the OAL the same as the .22 Hornet when loaded.
I can find a drawing but it will take some time as I'm prepping for another competition right now.
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