Almost every indoor range in the current climate of "sue 'em all!" has pretty good ventilation and air handling these days. The restrictions on lead bullets indoors tends to be more because it's harder on the air handling and filtration system than simply because it's hazardous to breathe. The systems they have in place are expensive and they are often told by their warranty not to allow lead bullets on their range.
I've (more than once!) had range officers tell me on the QT that "no, we don't allow any of that here until after the public hours are closed... then all the range officers shoot the hell out of their cast and swaged lead ammo!" Hey, at least they are honest about it.
Something you need to know about shooting lead in your XD: Clean that bore and scrub it well after your lead ammo and don't shoot the pistol again with jacketed ammo until you've done so. Lead bullets sometimes/often leave lead traces and particles and shooting up a dirty leaded barrel with jacketed ammo can often do one of two things, neither of which is good. First is that you can see quick pressure spikes from shooting the jacketed stuff as it's forced down a bore made a tiny bit tighter by the presence of lead. The other issue is that it can make the lead traces in your bore all that much harder to remove.
If lead bullet ammo is properly made and of decent size and load for your application, it can not only be cheaper than jacketed, it can also be more accurate and it's almost ALWAYS going to be less wear and tear on the bore itself. (not that wearing out a bore is something that almost anyone ever actually does in a handgun... but it's still a point.)
So... if you have both lead ammo and jacketed ammo in your range bag, simply shoot up all the jacketed you like first. Then shoot as much lead as you want. Just don't go back to the jacketed until after you've put the elbow grease in.
