I do have range mags, separate from my SD mags. Historically, in IDPA we had to shoot max 10 rounders. Thus, when the AWB sunsetted, I bought very cheap a bunch of 10 Glock mags, just for the matches. Now, 10 round Glock mags have a spotted reputation with HP, but not so with FMJ, so they were dedicated range mags. That difference is moot in my ban state but I do keep the SD mags separate. I do load enough mags for a match, as loading at a match is a pain.