Virginian
Member
The 12 gauge 11-87 is designed to handle everything from 1-1/8 ounce field loads on up. Many have had issues with light loads. Just because you have one that does not, does not change that fact. It is easily adapted by placing an oversized O ring in front of the gas piston to block the flow of gasses to the compensating valve, much as the barrel seal activator works on the SuperMag and 20 gauge 11-87. Just don't forget to remove it before shooting heavy loads.