found my rigby catalog circa 1924 43 sackville st address,, lists there guns 1 thru 5 in there price list

1.275 bore
2.275 bore H.V.
3.275 bore LIGHT MODEL
4.350 bore MAGNUM
5.416 bore BIG GAME this is how they are categorized in the index,

model 1 175 gr. 2300 footseconds,, standard sight for 1, folding for 2,to 300 yards

model 2 140 grains 3000 footsecondsstandard sight for 1 folding for 3,to 400 yards

both models 1 and 2 are 7.5 lbs

model 3 lightweight has 21 inch barrel can be had in either ammo configuration 6.5 lbs

suitable for youth or women,,

4 and 5 are as listed above 350 and 416 ,,paul