I don't know if you guys have seen this, but there is actually a 10mm rifle bullet (spitzer) available. Obviously it's too long for a standard 10mm magazine, but if you were shooting 10mm in an alternate platform, the longer OAL may not be an issue.
See link.
https://www.midwayusa.com/product/184584/factory-second-muzzleloading-bullets-40-caliber-400-diameter-200-grain-polymer-tip-spitzer-for-use-with-45-caliber-sabot-box-of-50-bulk-packaged