That's just wrong.
Sorry to hear that you are stuck with a range that steals your brass, or do they pay you for its value?
I would suggest a brass catcher. If it doesn't hit the ground, how can they claim it?
Do they impose this usurpation on revolver shooters? They would have a hard time parting me from my 454 Casull brass. Or even my 45 ACP from my revolver that chambers those cartridges.
Good luck. Welcome to the forum and to reloading.