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Author Topic: .54 Cal GPR Velocity  (Read 712 times)

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Offline flinter54

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.54 Cal GPR Velocity
« on: April 05, 2008, 08:16:21 AM »
I was just wondering, those of you that shoot the GPR Flintlock in .54 Cal, have you ever chronograph your loads. I am curious as to what kind of velocity you guys are achieving either with the .530 or the .535.

Have a great day!
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Offline McLernon

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Re: .54 Cal GPR Velocity
« Reply #1 on: April 10, 2008, 03:10:21 PM »
According to the Lyman Data you should be getting the following muzzle velocity with FFg Goex with a 32 inch barrell

60 gr----1337fps
70 gr----1390 fps
80 gr----1442 fps
90 gr----1480 fps
100gr---1517 fps
110gr---1660 fps
120gr---1803 fps

All at or below 8300 psi

Mc
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