1100 conversion to trap gun question

[Milkmaster]

Here's the scenario...

I have a 12ga 1100 Classic Trap that already shoots a bit high like you might expect that model to do. (great gun btw) It has the Monte Carlo stock etc.

I also have a 12ga field model 1100 that is chambered for 2 3/4" only that I would like to set up for trap. Expectedly, the field gun does NOT shoot high as the trap gun does. Both guns pattern beautifully.

The barrels for each are identical when it comes to rib height etc. on the outside. The receiver is identical in that all parts appear the same and will even interchange.

Question: Are the aiming points to the two above guns the same other than the fit and length of pull changes presented to the shooter by the Monte Carlo stock on the Trap Classic? I want to know if simply changing the field stock to one identical to my Classic Trap will make it shoot similar, or are there other differences I cannot see with the naked eye?

 

[ArmedBear]

When you shoulder each gun, do you see the exact same thing?

I'm guessing that you don't, exactly. Here's my guess: when you shoulder the trap gun, you see the mid bead and the muzzle bead, stacked. When you're shouldering the field gun, you see a bead and maybe a little rib, or maybe just the bead sitting on a flat platform that is the rib. So, you're actually pointing flat with the field gun, but angled a bit up on the trap gun. Is that accurate?

If so, that's due to the higher comb on the trap model, and it's facilitated by the mid-bead. It's not the barrel or the slope of the rib.

If you want to see for sure, swap barrels. The rest of the gun (receiver, gas system, etc.) should be the same, mechanically, unless the trap version has a special large piston designed for the lightest loads, and even then, the parts should interchange easily and safely. I've got a piston like that in my parts box, though I think it came from a skeet model, so I know they exist. They're not a big deal, though.

Also, if you want to try it, just cut something that will raise your cheek up to the same level as the trap model, and tape it onto the field gun's comb with hockey tape, duct tape, or whatever, and shoot it. See what happens. You can also stick a piece of shot or something with rubber cement, on the field gun's rib, to act as a mid bead. If you like the results, make them more permanent. If not, you can still have an undamaged field gun without spending any money.

 

[Milkmaster]

Thanks for the reply Bear. The field gun already has the mid- bead on it. I understand about the trials and things to do with the gun to make it shoot higher. Those are planned events for sure. My curiosity in the question was if there were other differences in the two guns that aren't apparent to the naked eye that affect the high aiming point other than the stock setup on the Classic Trap.

 

[ArmedBear]

I've compared a Classic Trap to my 1100, and there do not appear to be any differences other than the barrel weight, the stock, and the engraving. My 1100 is an old Magnum so I think it's a tad beefier, but all barrels, internal parts, and stocks fit the same, and either way, that's not an issue if you're going to shoot trap loads.

 

[kirbythegunsmith]

Details

Here is illustrated the situation of stock angle of the dangle for field stock vs. trap high comb vs. trap Monte Carlo:

(all are pictured on the same barrel/frame plane)

Field stock example



high comb trap style



high comb trap Monte Carlo



What makes the same frame line have different height sighting planes: stock attachment through-hole location!

See the difference of the end contour of the field (left) vs. the high comb that has a more blunt rounding of the toe and less bulging ovality.




Now we can decide what other detailed information (barrel gas port size etc.) is in need of analysis.

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