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
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
I found one on the internet for $195.... http://www.joesalter.com/detail.php?f_qryitem=5997
The Cooey Model 840 is a Canadian-made .22 caliber rifle that was produced from the 1960s into the 1980s. Given the serial number 79487, it is likely from the early to mid-1970s. The value can vary significantly based on its condition, but typically ranges from $150 to $300. For an accurate appraisal, it's best to consult a firearms expert or a recent sales database.