QUOTE (gunfan @ August 11th 2009 12:44 PM)

I forgot to mention the the ejection port may not be big enough to handle the 9 X 25 Dillon (or the 10mm Auto for that matter). Check into this before altering your barrel. If it isn't, you can still have the barrel reamed for the .357 Sig cartridge.
Scott
It should not be a problem asI have fired 9mm,10mm,45 acp,45 super and .357 sig out of the same gun , All that is required fo rthe caliber changes is to swap out the 45acp extractor for a 9mm extractor and switch out the barrel. However, the extractor has been changed now for about 2 weeks, so all I have to do is switch the barrel and have a loaded magazine ready.