bob64 Posted June 1, 2008 Report Share Posted June 1, 2008 hi, can any one help me here ,on using jbm calculation program what do you use G1 -G2 -G5- 6- 7-8 GI-GL. I,am using 155g lapua scenar bullets doing 2950ftp i,am lost on which one to use. thanks in advance. bob64 Link to comment Share on other sites More sharing options...
Guest varmartin Posted June 1, 2008 Report Share Posted June 1, 2008 Use the default or G1 drag function...... Link to comment Share on other sites More sharing options...
Ronin Posted June 1, 2008 Report Share Posted June 1, 2008 G1 drag function. Link to comment Share on other sites More sharing options...
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