jrp267 wrote:The recoil would actually be less. The 10 is heavier therefore felt recoil is less. My gold ten is a dream to shoot. And I prefer it over my benelli nova. I would love to buy factory loads at 1600 fps but I shoot 1450 and seem to do fine.
While I agree with your findings in part, due to the weight of your particular guns, that is only a portion of the reality of the situation. Recoil is a function of the weight of the powder, shotcup and shot and its Muzzle velocity compared to the weight of the gun and it's rearward velocity. John Taylor's "Shotshells and Ballistics" manual page 43 ff describe the effect of recoil using a 10 lb 10 ga and all other ga's he used an 8 lb gun. He further calculated some recoil energy using Lowry's ballistics program and published those results in Table 9.1 on page 43. Further information on recoil was gleaned from Hatcher's Notebook Chapter XII "The theory of Recoil" page 279 ff where considerable explanations of the theory of recoil is discussed, evaluated and discussions on the "Principles of Physics Involved in Recoil Calculation", the "Three Elements of Recoil", Internal ballistic recoil "Recoil Before the Bullet Leaves the Gun" and some discussion on the effects of the propellant gases after leaving the barrel and uses as an analogy Rocket Propulsion.
What this all boils down essentially is the heavier the shot , shotcup and powder charge the heavier the recoil, independent of gauge of the gun.Taylor notes that one traditional means used to reduce recoil is using a heavier gun. Interestingly too he notes that porting 's attenuation of the rearward displacement of the gun is minimal but it's ability to retard the vertical displacement of the barrel is immediately apparent!
KPY will confirm the above.