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Air Gun Home Forum Index » Rifles » Disco chrony testing: Which would you choose?
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Disco chrony testing: Which would you choose? 
PostPosted: Wed Mar 04, 2015 10:35 am Reply with quote
rcmartin
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Joined: 13 Jun 2011
Posts: 49
Disco is stock except for the Maurder trigger group, the MellonAir spring adjuster
and the TKO Muzzle Brake.
JSB Diabolo Exact Jumbo Express .22 Cal, 14.3 Grains, Domed pellets.
Test target was at 50 yards.
Fill pressure starting at 2200 psi.





#1- 8 turns in from flush, end pressure 1200 psi
#2- 7 turns in from flush, end pressure 1250 psi
#3- 6 turns in from flush, end pressure 1400 psi
#4- 5 turns in from flush, end pressure 1450 psi
#5- 4 turns in from flush, end pressure 1600 psi
#6- 3 turns in from flush, end pressure 1700 psi
#7- 2 turns in from flush, end pressure 1750 psi





22 shots from each fill.

Shot groups(best 2 of 7) are from 2 of the above groups.
Which groups do you think shot the best?

GroupA

GroupB
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PostPosted: Thu Mar 05, 2015 9:19 pm Reply with quote
AirGunEric
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Group B is more consistent (less fliers)- so I would suggest using whatever setup was there and working on shooting technique beyond that.

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PostPosted: Thu Mar 05, 2015 9:22 pm Reply with quote
Robw
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A re-crown might help.

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Disco chrony testing: Which would you choose? 
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