chamber volume to barrel volume

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RAYZOR51
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Mon Mar 17, 2014 5:06 am

I have a 600mm barrel with an id of 8mm which works out to 30171 cubic millimetres.

Firing chamber is 100mm id of 12mm = 15085 cubic millimetres.

This is approx .5:1 (if my figures are right ) :?:

Would someone please check these figures for me.

Firing 7.5mm bb's @ 150 psi bolt action single shot.

all advice readily received. :bounce:
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jackssmirkingrevenge
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Sat Mar 22, 2014 4:16 am

cubic millimetres
:D

30.17cc vs 11.31cc

That's not much for 150 psi
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