The Firing Line Forums - View Single Post - Model 870 express synthetic 7-round

oldguy870 · October 13, 2012, 10:01 PM

870 and steel based shells

Sometimes the polishing of the chamber works. Sometimes it does not. I have six 870s. 3 have had the chambers recut by a gunsmith. One of the recut ones was a Wingmaster. All have had the AIPI steel wool treatment 4-5 times each.

About half of them still have problems with low base steel Federal shells. They all work perfect with brass Winchester AA shells.

October 13, 2012, 10:01 PM	#11
oldguy870 Member Join Date: June 1, 2011 Posts: 34	870 and steel based shells Sometimes the polishing of the chamber works. Sometimes it does not. I have six 870s. 3 have had the chambers recut by a gunsmith. One of the recut ones was a Wingmaster. All have had the AIPI steel wool treatment 4-5 times each. About half of them still have problems with low base steel Federal shells. They all work perfect with brass Winchester AA shells.