Before getting on to what mine are, are there any Aussie or Kiwi cartridges?

The closest I can think of, are the .303 derivatives after WW2 and maybe WW1?

With lots of surplus SMLEs in .303, many were modified to create the .270/303, the .25/303, even a .22/303. .375/303s as well I think.

No doubt Canadians will say these are not uniquely Australian and NZ but maybe they were here first.

I think in the 1950's a .303 and some of these would have been the most common. In addition to rimfires and shotguns, and perhaps .22 Hornets.

Richer shooters might have had a Rigby .275 as one of my "neighbours" did have.

The only other firearms I personally know about from older days were Martinis - Henrys and Cadets - and other pre 1900 firearms. Even the odd muzzle loading shotgun.

Later with the .222 and .243 such modern unheard of velocities and ease of use and versatility caused them to become the most popular.

I wouldn't mind a .25/303 in a SMLE one day. Would make a nice Southern feral pig rifle.

Do our members here agree with my comments and beliefs above? Or am I wrong?