yes you can but onaly riffled slugs
1940 is turing year of cooey model 840he manifat
cooey 410 gauge model 840 Winchester Canada. single shot
The Winchester Cooey Model 840 shotgun, specifically in 16 gauge with the serial number 68572, was likely manufactured in the late 1950s to early 1960s. Cooey firearms were produced in Canada, and the Model 840 was part of their line during that era. For a precise year, checking detailed production records or consulting a Cooey expert would be necessary.
255920
The Winchester Cooey Model 840 is a .22 caliber rifle that was produced by the Cooey Firearms Company in Canada, which was later acquired by Winchester. The production of the Model 840 began in the early 1960s and continued until the late 1970s. Serial numbers on these rifles can help determine the production year, with the first digits generally indicating the year of manufacture. For precise dating, it's best to consult a reference guide or database specific to Cooey firearms.
150 - 200 bucks in .410
I have just acquired a cooey model 840 western Canada limited and I have done some research and talked to a few gunsmiths and from the info i have received a top-notch "perfect" model 840 will only run up to $275.00. If i was you i would keep it. It's a great little gun.
$50-$150 depending on condition. In Canada
No published sn data.
these cooeys were made in the 1950 to 60 era records are not available, value $50
Made in Canada
No, you cannot use a 3-inch shell in a Cooey Model 840 .410 gauge shotgun, as this model is designed specifically for 2.5-inch shells. Attempting to use a longer shell can result in safety hazards, including potential damage to the firearm and injury to the shooter. Always consult the owner's manual for specific ammunition recommendations.