R-6(HW-99) spring or even his 30 coil Universal.. plus spacing and weight in just the right combination. This can deliver 11-12 ft/lbs depending on the added work done during tuning.. and the cooperation of the gun-LOL. I did a Marksman 60 recently (77K) that nailed 12.00 ft/lbs using CPL's, but guns being somewhat individualistic.. they don't always come out dead center on the desired performance requirement. RB |