lyuv

Hello all,

I have a 0.45 Philadelphia derringer, with a 3" barrel. I"m looking for the most potent load. With longer barrels, the heavier the load, the faster the bullet. Simple.

However, in this short barrel, the powder thakes a significant part of the barrel length. So heavier load means shorter barrel.

Can you provide info or ideas on getting the best load?
Also - what about using 4Fg instead the regular 3Fg?

I dont have access to chronograph, so cant simply experiment.

One more: how do I measure barrel length? is it the Inside bore length? The total outside length? other?

Thanks,