I have an 11-87 SPS, 21" 12-gauge. Slugs work just fine in it, but I need to find some #7-1/2 or smaller birdshot that will cycle reliably so I can use this gun in some local 3-gun matches. The barrel itself is stamped "Not for use with light loads."
Last match, I used some Winchester AA Light Target Loads, #8 1-1/8oz loads and ended up with a single shot shotgun; spent hulls would not eject reliably. Somebody else offered me some heavy game loads, which I think were #7-1/2, 1-1/8oz loads, and they didn't do any better.
Please help! I really want to be able to use this gun in matches.