Ruger only 7x57 loads, anyone do it?

Specifically with varget and 748?

Im out of imr 4350 and 175gr interlocks. I just ordered 250 150gr sps Id like to get 2700-2800fps.

Hodgdon.com has reloading data for Varget in the 7x57 but it isn't optimal for that cartridge. I would trade off the Varget or 748 for some Reloader 19 or similar powders.

Unfortunately they're both open containers.

Varget will work but it looks like RL19, and powders near that burn rate, will give more velocity. The local store here had quite a bit of it in stock so maybe you can try and find some by you.