Way back in the "old days" when the .45 ACP was the target handgun (before being dropped for the 9MM by the military), it was known that .45 ACP cases would fail to enter the shell holder due to the rims (yeah, I know it is "rimless"), growing too large due to being reloaded many times.
Back in those days, we would turn a device that would present the cases backwards into the standard .45 ACP sizing die and squeeze the rims back down as to fit the standard shell holder.
This is what that device looks like:
Here is what it looks like (sorry for the blurriness), mounted in a RCBS Jr. press with a casing positioned on it to be pushed (slightly), into the sizing die.
For some reason, I never see any reference to .45 ACP cases growing as to not fit in their shell holder anymore. Don't know why.
Back in those days, we would turn a device that would present the cases backwards into the standard .45 ACP sizing die and squeeze the rims back down as to fit the standard shell holder.
This is what that device looks like:
Here is what it looks like (sorry for the blurriness), mounted in a RCBS Jr. press with a casing positioned on it to be pushed (slightly), into the sizing die.
For some reason, I never see any reference to .45 ACP cases growing as to not fit in their shell holder anymore. Don't know why.