LEOSA does address HP ammo, but NOT magazine capacity. Unfortunately, being that LEOSA is an essentially an affirmative defense, you’re left up to officer discretion.

“Qualified officers may use LEOSA only as an affirmative defense if prosecuted. An affirmative defense requires that the finder of fact, the judge, must make a determination of whether the person raising the defense is eligible to do so. To be eligible, the judge must have determined that the person raising the defense is, in fact, a qualified officer under LEOSA and was carrying the required identification at the time of the alleged violation. This means that the act will not keep officers from being arrested. However, LEOSA will stand as a defense at a hearing as to the legality of the arrest if the arrestee is, in fact, a qualified officer with the requisite identification.”

Legal Digest: Off-Duty Officers and Firearms — LEB