Cooey 840 forend

[Tronneroi]

So, I have an issue with my old model 840 in .410

Sometimes I get a little excited when the action is cracked and pull the forend off. It seems the like spring is a little worn? I feel like it should take more force to pull the forend from the barrel.

Either way, It's annoying when your shotgun comes apart during a reload... Was wondering if anyone knew of a simple solution to this problem or do I just turn it into a boomerang the next time I accidentally disassemble it in the field.

Thanks for any info you could provide. Here's a photo of the style of forend.

[saskbooknut]

A shim under the forearm spacer will make this forend tighter.
Mine go on with significant tension.

[KegRiver]

I have heard of this happening but don't recall all the details.

There was something about a part being cracked, not sure which part.
In the end the part broke while the guy was trying to figure out what was wrong. A replacement part fixed it good as new.

I would start by examining all associated parts for cracks.

The mechanism has to over-cam to lock properly. Anything that prevents that to any degree will result in a less that ideal lock.

A cracked part protruding into the space between the stock and the barrel would do it. A cracked or broken spring could do it. Even warped wood is a possibility although not high on the list of things I would look for.

Another thing to look at is if the forearm catch plate may be loose or warped.

There used to be a member who had parts of those old guns.
I think his handle was elkdump or something like that. I'm not sure if he's still around or not.

I believe the Winchester Model 840 is the same gun and if so parts are available from Numrich.

I know the 840 started as a model 84, was upgraded to a 840 when Winchester bought out Cooey in 1961. What I don't know is if the Winchester 840 was a rebranded Cooey 840, but all the parts look identical.

[saskbooknut]

The Cooey Model 84 had a curved leaf spring under tension for the forend latch.

The Cooey 840, Winchester 840, Winchester 370 and Winchester 37A all have this later, coil spring / plunger latch design.

I would examine the barrel lug for wear, as well as closely examining the forend latch frame for cracks, as Keg suggests.

[Ebrand]

If you want to get rid of it ....

I know a guy.....

Wood on mine is cracked.

It was my Dad’s.

If you want to part with yours let me know.

[cleanbore]

Growing up we all used these shotguns on snowmobiles where I live, it was common to find Coey forends on the trail, a lot of guys used electrical tape but the goo was nasty over time, a 1/2” slice from a bicycle inner tube stretched over the barrel and forend, works better but still ugly, as for the forend rear base some were black plastic and cracked, latulippe outdoors sell replacement metal ones. Re the wood cracking; keep an eye out for 16 gauge Coeys for sale, they go for dirt cheap Due to ammo scarcity but use the same parts.

[cleanbore]

Latulippe is showing sold out but numerous other sell them as “forend spacers” available in aluminum or steel

[huntinstuff]

Originally Posted by saskbooknut

A shim under the forearm spacer will make this forend tighter.
Mine go on with significant tension.

Listen to the above

[Pioneer2]

Tradex

[Puma]

Originally Posted by cleanbore

.... Re the wood cracking; keep an eye out for 16 gauge Coeys for sale, they go for dirt cheap

Due to ammo scarcity but use the same parts.

Scarcity ? 16 g ammo is everywhere !

[cleanbore]

Really. ..? I’ve looked with very little luck, hit and miss I guess

[David Henry]

I recently parted with all my Cooey bits and pieces to a Cooey parts specialist in B.C. Darren's business is called "Cooey Everything" and in my transfer of parts there were several 410 fore ends and associated mounting hardware. Hope its ok with the mods if I post his contact info on here to help out those searching for parts. Text # 604 250 1136 and his email address is d.roufosse@eastlink.ca Good luck, D.H.

[cdmc]

Originally Posted by huntinstuff

Listen to the above

100% truth. Early and later styles tend to be worn down either on the barrel lug or the fore end.
Replaced the FILs missing fore end with an later version with no issues.
Last year I used a fore end from a 20g due to not being able to find one. Works for what I did with it

There must be a heck of alot of fore ends lying in dirt...