Your no 1 rifle is modelled after the British Farquharson rifle. The number 1's are available in 3 or 4 models. Yours is the International model. The international is available in 243, 270, 30-06 and 7x57 mauser. No. 1's are available in all calibers from 22 hornet to 458 win mag. I currently have a stainless synthetic with a bull barrel in 22-250. Used to own the light sporter in 25-06, and a medium in 280. This in my opinion is a great gun a little heavy for long range, deep timber hunting, but a fine firearm. There are drop in aftermarket triggers available from Brownells or Midway USA if you are interested. Good luck with your new purchase.