Shot several 7.5J guns. Diana 470, 280 and 31. HW30, Stoeger ATAC...Less recoil isnt always the case. When theres too little preload they can become harsh as well. Dont think my Diana 31 has less recoil than a 12Ftp one. My Stoeger ATAC is actually very harsh to shoot feels like FAC. It all depends on how much power is lowered to achieve 7.5J and how it is achieved. The Stoeger has holes in its piston which makes it superharsh.