Whats the hottest rimfire round?

[Gazza]

I'm just gathering a selection of rimfire ammo to see what the new rifle likes.
I'm aiming to try everything from subs right through to the fastest rounds available.
Whats the hottest then chaps?

[DL.]

I'm a little out of date, but maybe these-

https://www.aguilaammo.com/rimfire/

CCI Stingers and Velocitors are more commonly available, but are expensive and your rifle probably wont shoot tiny groups with them.

[the running man]

Stingers used to be great in my mk2 Ruger...

[dromia]

17HMR.

[Blackstuff]

Presuming you mean .22lr, the fastest available that I know of is a relatively new round the CCI Copper, only 21grs but moving at 1850fps!

[Sixshot6]

17wsm, can move at 3000 fps.

[dromia]

Is there good ammunition availability yet?

[Gazza]

Yes, should have mentioned I meant .22LR

[Kungfugerbil]

Is there good ammunition availability yet?

For .22LR, no issues whatsoever. The only fly in the ointment is a couple of increases from the European manufacturers like RWS and the daft increased shipping costs from wholesalers. There's plenty out just a bit more money than it was. Still cheap in the grand scheme of things.

I buy for our (rimfire only) club so get through a few rounds...

[dromia]

Following on from the previous post to my last but one post, I was asking about the 17 WSM ammunition, are you getting plenty of that?