The Gamo 1250 Magnum has got to be amongst the biggest with its enormous bore and stroke. Bowkett told me that he came up with a .25" version to compete with the Webley Patriot in the States. It used a SuperTen bull barrel shroud and he fitted a .25" BSA barrel. Marketing decided the pricing was against it after all the modifications were made to a standard 1250. Cost would have been above the Patriot. It was ideal for poking out squirrel dreys