It's mostly just difficult to close the bolt. My understanding is the tighter match chambers are also shorter so that bullets engage the rifling when the bolt is closed. I believe Voelker shortens the barrel on the breech end and recuts the chamber - not something you'll see on a factory rifle. The Win PP has a lot of lead exposed and is the most difficult to chamber. The Win PP also fails to extract so I've had to push the empties out with a cleaning rod or pry them out with the tip of a pocket knife.
It's a non-issue in a factory chamber, so you should be fine. That's one of the reasons I grabbed the sporter model with factory chamber - everything works fine in it. A co-worker has a Cooper that is similar - they told him they could open up the chamber so any ammo would work, but may lose some accuracy.
Last edited by JGray; 10/04/14.
