IMO the point of impact is always affected when you remove the barreled action from the stock, and then reassemble. However it really depends on the accuracy potential you are getting from your rifle, and the accuracy you deem acceptable. I hope the fellows above accept my apology, but I have to disagree with them on this one.

I always remove my flinter from the stock, however my flinter only has one pin that holds it in the stock, and it is relatively easy to return it to the same position.

I believe when you return a barreled action to a stock that has two stock screws that you must return it to the exact same position in the stock, and you must tighten the screws in the same cadence, and to the same torque. If you do not do this then I do not see how POI could not be affected.

If you plan on beingable to accurately shoot your MZ out to 250 yards then your question is very important. If your goal is 75-100 yards then you should be able to return to a relative POI.

I believe bedding is very important in a MZ. In the Omega's I have noticed that the laminated stock rifles shoot better than the black composite stocks. Personally I believe this is due to the fact that the laminated stock is more rigid. And the rifle actually has a better stock fit. This IMO allows the barreled action to return to the same place every time you reassemble. Just my opinion. But then I am very anal about the accuracy of my MZ. Tom.