Quote Originally Posted by Barryg View Post

Just found the bore/stroke it's 27 mm bore and 100 mm stroke that's 57.2 cm about the same as the 80 and even the Diana 350 with 70.8 cm would really struggle to get 27 ft/ lb, and the patriot is 84.5 cm
Hi Barry, thanks for finding those stats, as supports my calculated best guess as to the Tommy's performance @ 27ft.lb based on my 'real time' experiences of owning and shooting an array of F.A.C. rated recoiling break-barrel air rifles: appreciated.