Re: New to reloading question.
I am assuming you inspected the brass before reloading and there were no dents. Further, I am assuming you did not "full length size" the new brass (if you did, and got lube on the shoulder, it could have caused your dents).
If the above holds true, I doubt that the dents are a result of your reloading. As brass expands when fired it takes on the shape of the chamber - which may have a burr causing the dent. Fire a couple of factory rounds and see if you get the same results. I'm guess'n you will. If I am correct, send the gun back to Kimber with a couple of spent rounds and they will correct the problem. While what you describe is likely "no big deal" the dents may cause your brass to fail before you reload same as many times as you would like.
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Author of: The History and Guns of Simson & Co., Suhl