Viggo G Dereng

Hi There,

I have an opinion, Just a gut feeling that it has to do with whe added mass of the additional barrel length.

ie; longer barrel more mass and therefor less velocity of the cannon assembly for any given combination of projectile, powder, and recoil spring serength.

I hope this helps explain. If you still need more detailed explanation E-Mail me, stating what you question and I'll try to help.

ViggoG