Winchester RA9T different versions?

[Nephrology]

I looked at the two round types today. They both look identical. Check out the attached picture.

That's newer RA9T. RA9SXT has a narrower cavity.

[Kowalski]

Both the current and immediately prior generation of RA9T (not RA9SXT) performed acceptably in Doc's testing, Caskalefan, so you should be good to go.