Quarterbore's Forums - 247gr case boolit load data needed

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- - 247gr case boolit load data needed (http://www.quarterbore.net/forums/showthread.php?t=9781)

ohnomrbillk

07-10-2012 04:58 PM

247gr case boolit load data needed

The Cast Boolits forum ran a group buy on a mold for the 300 Whisper/blackout/WTFever.

Does anyone have any load data for this bullet?

sten668

07-11-2012 02:42 AM

I have tried 10 grains of 5744 and 1680 for right at 1050fps , 16in M1S barell, carbine gas tube, neither load will hold the bolt open on last shot. They will strip a fresh round most of the time. Still a work in progress, I am working on an adjustable spring set up. It loves TNTs super sonic. BTW 5744 is much more quiet than the 1680 out of the AR or my bolt gun.

gds	10-30-2012 10:02 AM

I am using 10.1 gr of 1680 on a 9.5inch 1 in 8.5 twist barrel with pistol gas tube. Cycles great it is subsonic but not sure what speed, my chrony stopped working. Took a small doe with it last night.

thehouseproduct

11-05-2012 07:36 PM

Anyone have a good calculated BC for this boolit?

gds	11-06-2012 09:20 AM

I have tried to find a BC for it but have not been able to

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