This is a model 4100 (what it was called in the US), but the schnable forend has been sanded off. The rifle was made in 1959. The rubber recoil pad is an after-market add on.Thank you for your quick reply. I took some quick pictures of the rifle, I hope they will be sufficient. The barrel is fairly short, at about 51 cm. It is a very light weight gun. The stock butt was manufactured in America, LA in fact, so it may have been imported into Australia from there, although I can't be sure. The stock seems to be in good condition overall considering how old it is.
That "curled-down nose" is called a schnable.Me too, except in .30-06 US. My number is 246xxx A nitro. Looks identical to the former in the pictures with one exception, the tip of the foregrip has a curled-down 'nose'. I had no idea what model # until now. Thanks for any input.