Mossberg 702 crown is poorly machined
mohr308,
My brother loaned me his Mossberg 702, as I agreed to free-float the barrel for him to see if it could be more accurate. After sanding all high-points off the stock, I took a bright light to the crown...
Yikes! The crown itself has a sharp lip that is pushed inward to be a smaller diameter than either the lands or grooves. Stroking a Q-tip out of the tip of the barrel catches threads.
After this lip, just inside the barrel, you can see the lands are ground away on 1 side of the barrel and not the other. In fact, these machining marks seem to dig even deeper than the grooves on this side of the barrel!
At first, I was tempted to lap the sharp lip off the crown. However, doing so would then further expose the asymmetrical rifling just below... At least the sharp lip seems to be a perfect circle!
How does YOUR crown look?
Also seeking advice from a wider audience: To lap, or not to lap... Any advice?
|