Recommend desensitize now! We started with a 22 about 100 yards away from pen, upgrading to 30-06, 300 and whatever my son has on the gunrack. I watched what the does do and after initial leap and trotting off to bedding corner they've gotten used to gun shots. Started same thing this week with fire crackers, just smaller stuff, but pretty noisy, since my nightmare was scheduled for last night, fire works at Knights of Columbus which is only about 500 yard away across a soybean field. Thank God, it poured and thundered, they rescheduled to next Friday. Some neighbors set some bigger stuff off last night and probably will tonight, so a little more practice. I'll be praying all week for rain or that the Lord will just shut their ears/eyes. Can't believe I spent cash on fire crackers but that was my only idea how to possibly prevent disaster. Hope things will be o.k. for you!!!