Reducing the overall length of already loaded rounds?

[DMZ85]

I loaded about 1000 rounds of 9mm too long for the PCC that they are intended for. Any thoughts running the rounds through my XL750 to decrease the overall length by around 1mm. They have been crimped by a Lee factory crimp die. Thanks. 

[Rnlinebacker]

Done it. You're fine. Just gonna be a while loading then into seating die one at a time

[ddc]

8 hours ago, DMZ85 said:

I loaded about 1000 rounds of 9mm too long for the PCC that they are intended for. Any thoughts running the rounds through my XL750 to decrease the overall length by around 1mm. They have been crimped by a Lee factory crimp die. Thanks. 

 

I have done it to fix minor length discrepancies on the order of 0.005. 

1mm seems like a lot. Almost 0.040.

 

Are these rounds that were intended to be shorter and had been tested at that shorter length?

They were just loaded longer by mistake? If so then you would be ok.

 

If that shorter length has never been verified with that load then it is too much.

[OptimiStick]

I've done it more than once. Just feeding it into the seating station and then letting it run thru crimp again also, though I don't know that that crimp did anything. It was just easier to do it that way.