these are fine old guns, but old is the operative word. Mine was built in 1929. Go to Brownells or eBay and look for the owners manual. It explains how to disassemble the gun for cleaning. I would recommend disassembling to the point of having no wood on it, the trigger group removed but intact and the bolt removed. Clean all metal parts thoroughly with kerosene/varsol/favorite goo remover preferably by a long soak and a good brushing. When disassembling, lay everything out in order, including the friction rings and spring as they come off the mag tube. One of the major problems with the Mod11 is residue gets behind the bolt in the recoil space of the receiver. Binds the bolt. Also, residue gets down inside the tube that contains the bolt-recoil spring, and gums that up too. Be very careful removing this spring, it can enter orbit. Clean it and its tube thoroughly. Check the rear of the receiver, there should be a fibrous washer/wad there that stops the recoiling barrel. If absent it needs replacing before further use. Time to reassemble, use the absolute minimum of quality gun oil. I put it on my finger then rub all the metal. A couple of drops in the trigger group. DO NOT OIL THE MAG TUBE. Wipe it throughly with cleaner/degreaser. For the heavy loads you say you have, both friction rings are added after the barrel-recoil spring, small ring first, then large ring with spring clip around it. Rub your oily finger around the inside of the barrel ring, and add the barrel. This is the only oil you need in the recoil mechanism. Over-oiling means it won't absorb recoil forces as it should, and it will beat your receiver to scrap. Now, with a clean, oiled gun, try your loads. If it won't cycle, your loads are not as heavy as you describe. Remove barrel and rings and recoil spring, and reassemble in this order: small ring, spring, large split ring. Try again. This handles most commercial loads from Federal or Remington (although I have misfeeds with Rem, never with Fed). If it still won't cycle, you may have target loads. This time, both friction rings are put on first then the spring. One of these three assemblies will reliably cycle your ammo. Always do the research in this order, to avoid beating scrap out of your receiver.
