frontlander
New member
Howdy. I recently acquired an 870 that had been worked over by the Gunsite gunsmity. MMC tritium ghost ring sights, synthetic stock, Side Saddle, Pachmayr fore end. It is a great gun. I've put around 200 rounds through it so far with only one problem. I kept having problems with the action not opening far enough after around 30-40 shots while shooting clay pigeons. The action would open about 2/3 the way and then a spongy resistance would be met. Thinking that it was a result of the cheap discount shells I was shooting, I broke the gun down and thoroughly cleaned and lubed it. It worked fine until I'd shot about 30 more rounds and then it started getting progressively harder to cycle the action. This time I sat down and really looked things over. It turned out that the barrel was heating up enough from the rapid fire clay shooting that it was actually melting the Pachmayr fore end onto the barrel! There was just a little bit too much material on the barrel side of the forend. I ground out the fore end to about an 1/8" clearance to the barrel and greased it for good measure. Problem solved. Just thought I'd let people know in case they experience the same problem.