Reply To: 25 JSB Heavies out of a Vulcan

Forums PCP Airguns 25 JSB Heavies out of a Vulcan Reply To: 25 JSB Heavies out of a Vulcan

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Yrrah
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“airkrazy”Well my friend ran some thru his today and came in at 840-850. At 50 yrds it baffles us that the poi did not change from the 25gr.

 


You may find interest in this review I did earlier on:
http://www.network54.com/Forum/79537/message/1433136252/Heavy+JSB+Kings+-+BC+derived+and+compared+to+the+lighter+originals

Note that with a 781 fps start the heavy reached 75 yards with 662 fps, the light started at 899 and was down to 688 at 75 yards.
So with 118 fps faster start the light pellet had only 26 fps advantage after 75 yards.
The relative drag coefficients tell the story. when the pellets are shot from the same rifle tune.

This one is back about 10 pages here now:
http://airgunnation.dev/topic/jsb-new-heavy-25-cal-kings-100-yards-half-inch-group-and-normal-kings-group/
Kind regards, Harry.