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Difference between 1100 and 1187?

Discussion in 'Uncategorized Threads' started by Big Al 29, Jan 13, 2008.

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  1. Big Al 29

    Big Al 29 TS Member

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    What is the difference besides the name?

    Thanks
     
  2. kolar kda

    kolar kda TS Member

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    i have an 11-87 as one of my field guns/ the gun my friends get to borrow when we go shooting, and i really like it, as do they(maybe cause they have no choice) and i may be wrong on this but the 11-87 is offered in 3 1/2 and the 1100 was only offered at best as a 3
     
  3. Brian in Oregon

    Brian in Oregon Well-Known Member

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    The 1187 has a gas compensating system that bleeds off pressure not needed to operate the gas system, allowing light 2-3/4" to heavy 3" shells to be fired in the same barrel. The 1100 must have different barrels (standard and magnum) to do that.

    The 1187 has a stainless steel magazine tube. The 1100 has a blued carbon steel tube. Supposedly the 1100 tube will last longer for trap shooting, while the 1187 is corrosion resistant. I have not found any evidence so far of any lifespan difference.

    The 1187 and late model 1100's are very similar. The late model 1100 receiver is pretty much an 1187. It uses the 1187 bolt, which has a larger (thicker) extractor. (Early 1100 barrels can be used if their extractor slot is widened a bit on both sides with a file). Many 1100's now use the 1187 magazine cap retention system.

    The 1187 uses the standard 1100 action sleeve. 1100 Magnum models use a heavier sleeve. (This applies to the 12ga. The 20ga 1187 uses an even lighter action sleeve.)

    As far as target models go (trap, skeet and sporting clays), the 1187 uses non-pressure compensating barrels, same as the 1100. There is very little operational difference between the guns.

    Some 1187 barrels intended primarily for heavy loads have slightly altered gas systems, or no gas compsnating system. Turkey, slug, defense and tactical shotguns have no gas compensating system. Field barrels like those commonly used for goose hunting may have slightly reduced gas ports, though they retain the pressure compensating system.

    If you're looking for a Rem semi-auto Trap shotgun, and want a fixed choke, the best of these is the 1187 Trap. It has a slightly higher step rib barrel, and is overbored. There are earlier 1100 barrels like this, except as far as I know, all are fixed choke. The earlier 1100 Trap guns have better fit and finish, and the action is smoother. Early 1187 actions are smoother too. The early to mid 1990's are much smoother than those made now.
     
  4. Bob_K

    Bob_K Well-Known Member

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    What is the difference between the Model 1100 and Model 1187?

    Question
    What is the difference between the Model 1100 and Model 1187?

    Answer
    In 1987, the new gas compensated 1187 was introduced. The 1100 and the 1187 are similar in design. Barrels are not interchangeable between these models.

    The gas cylinders are welded in slightly different locations. This is partly because the 11-87 has a longer magazine tube. The 11-87 also has 2 gas orifice holes. Only the 2-3/4 inch chambered version of the 1100 will have two. The magnum 1100 barrel has only one.

    The 1100 can shoot only 2 3/4" or 3" shells depending on the barrel installed, and with the 1187 models with magnum barrels can shoot both 2 3/4" and 3" shells. To accomplish this, two additional holes are drilled in the top/front of the gas cylinder, and covered with a tempered steel spring. There is a relief cut made into the gas cylinder to accommodate the spring. The Model 1100 gas cylinder will not have the relief cut or the spring.

    The Model 11-87 also has a slightly longer barrel extension. This is the part that connects directly into the receiver.
     
  5. Brian in Oregon

    Brian in Oregon Well-Known Member

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    Actually, the gas cylinders are in the same exact position. The difference is that the snouts of the gas cylinders have a slightly different profile, and the gas ports are .200" closer to the muzzle on the 1187. This was done to move the gas chamber further forward internally for gas access to the gas compensation ports. As for the magazine tube, they are the same exact length, but the o-riing groove is slightly further forward on the 1187. The barrel extension of the 1187 and 1100 are exactly the same. The only differences at that end of the barrel is that the extractor slot is narrower on early 1100's (late 1100's use the 1187 bolt) and that some early 1100 barrels had 45 degree shell rim seats instead of 55 degree (that's what the star * stamped on the barrel indicates - a 55 degree seat).

    Anyone can check this for themselves with careful measurements. And, it is possible sometimes to interchange 1100 and 1187 barrels. Just last month I test fired an 1100 Trap gun with an 1187 28" light contour barrel and forend. And i've done it before with other guns. The only ones that absolutely cannot be interchanged physically because of dimensional differences are the 1100 LT-20 and the 1187 20ga. BTDT.
     
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