Ok, so I am having an issue with my Hornady CD .45 ammo. Now before you go lecturing about the "never rechamber more than once" rule, know that I am not a new shooter, I have known of this rule for some time and while I still rechamber rounds, I keep an eye on the bullet seating. That being said, I am having some issues with my .45 ammo in my Sig 1911. I have 1 round that I originally noticed the issue with and then 1 round that I itentionally rechambered to recreate the problem. After just 3 or 4 rechamberings the bullet has been seated sigfificantly further into the casing than factory seating. I run Horandy CD and TAP as my SD ammo in all my 9mm handguns and I regularly rechamber those and have had no issue at all. I even rechambered the same 9mm round in my G19 last night at least 20 times and had no noticeable difference in bullet seating. It just seems to be an issue with the .45 critical duty. I dont have any pictures right now but I will take one tonight and post to show the difference. My understanding is that since .45 is a relatively low pressure round, some set back would not greatly affect the functionality of the round but I am still wary of firing these rounds that have been affected. Im not a reloader and I dont know much about crimping and all that. Is Hornady known for lose crimping? Could it be my gun? Is there another brand of good SD ammo that has exceptionally tight crimping? I need some help here so I dont blow my damn hand off.