Most of the time, in fact, a good majority of the time, you can switch them around with no ill effects? But, there are a few checks that will ensure that you'll be safe! It is desirable that your toggle train is tight, as in no, or very little, lateral breechblock movement when the toggle train is installed into the receiver?... The breech block can move a very few thousands, but any more will result in way too much headspace. Which brings us to the second check, as you range test your parts swap unit, check the first round thru it, and also the next half a dozen or so, for a pierced primer?... If all you see is a brass dimpled primer, all is well! A little black mark right in the center and for sure, the boogieman is right around the corner!!!!...
....Best to all, til….lat'r….GT.....
