I have ordered some Ampro Bronze nipples from Track of the Wolf... wondering how they might work.

Believe it or not not I have 18 #11 nipples excluding the ones already on guns... Of those 18 - 4 of them all older ones from years past actually hold the CCI and RWS nipples tightly. All of the ones on my Renegades which are the short TC nipples also work very well.

Semi, I understand your thought about taking some material off the top of the nipple to get it go down on the post further and will give that a shot. The problem when using them in a Knight Western Kit set up - I have very little room to work with before the hammer will not reach the cap.