I think our American cousins sometimes forget how limited the shooting scene is in the UK, as we’re in the dark ages by comparison.
Put plainly, that situation exists because nobody here can wander into a gunshop as you can Freddy, pick up a rifle in any chambering they fancy & walk back out the door with it. The burden of licensing and the lack of opportunity offers us choices which can be counted on a hand of amputated fingers. /QUOTE]
Well now I'm your Canadian cousin

Yes, we are fortunate to have really no limit on how many guns we buy as long as you have a gun license.
But it do suck when you pick up that one rifle that there is no ammo for and your itching to try it out. There is a few gunshows coming up so I'm sure that I will find something eventually.
One option is to buy brass out of Germany but shipping and export permit was rather expensive.