Benjamin Thinking of getting a Benjamin Discovery to tinker with.

[Gibsonvair]

I have a chance to pick up a Benjamin Discovery rifle near me and I like tinkering with other Crosman guns. I would have to be able to make it accurate (barrel?). I am hoping the original barrels are good. I was thinking of a metal trigger, regulator, maybe a better valve or modding the original valve and a nice wood stock.

 

[mrzip]

Thinking? Get it. Life is way too short.

 

[Gibsonvair]

I was hoping some one might talk me out of it, you know, intervention. I really can't find any reason to not to like it. It seems like a viable air rifle. the only downside I could see is eventual cost of all the planned modifications. I like the single shot and the simplicity of the design.

 

[xsarfc9x]

Magnum air power has a lot of good stuff to mod the Discos. Don Cothran still has some valves and parts available as well

 

[Gibsonvair]

It looks like stocks might be available from Steve Corcoran and Boyds. I saw Don Cothran had a .218" valve listed. Would this be overkill, and do his hammer sets work well with the Discovery? For Magnum, I would get his Trigger group for sure.

 

[SteveV]

Go ahead and get it. A great format to mod and/or personalize.

I would suggest maybe getting a hammer spring type power adjuster to replace the rear end cap as your first aftermarket part.

Don's valves are the bomb, but don't think you'll be able to tune to a velocity curve without a reg. Those valves are all about power!
I spoke to him back in November and he said he had maybe 6 or 5 of the .180 valves, not sure why they aren't on his website - I've one of those in a .25 bottle build, and it make almost 60 foot pounds with JSB 33.9 pellets with the reg at 2000 psi! They also work best with a soft hammer spring, or a P-Rod hammer spring with no pre-load.

GET IT!!

 

[Gibsonvair]

Well, I found a .177 with a hand pump, still in the box, never fired. New old stock. What is that worth on the market? I may use it to help fund my .22 caliber project.

 

[Gibsonvair]

Go ahead and get it. A great format to mod and/or personalize.

I would suggest maybe getting a hammer spring type power adjuster to replace the rear end cap as your first aftermarket part.

Don's valves are the bomb, but don't think you'll be able to tune to a velocity curve without a reg. Those valves are all about power!
I spoke to him back in November and he said he had maybe 6 or 5 of the .180 valves, not sure why they aren't on his website - I've one of those in a .25 bottle build, and it make almost 60 foot pounds with JSB 33.9 pellets with the reg at 2000 psi! They also work best with a soft hammer spring, or a P-Rod hammer spring with no pre-load.

GET IT!!

I am curious how a .25 barrel is worked out.

 

[Avator]

I ventured down the "lego" rabbit hole many times and still like the "tinker factor" but one hard learned lesson came from that... you'll never get back what you invest in one... My advice... grab a Fortitude. They already have all the features you might want to add to a Disco. If you want to add one really nice upgrade.. Boyds stock hits the mark.

 

[SteveV]

I am curious how a .25 barrel is worked out.

It's a LW barrel, originally sold by Mountain Air Custom Airguns. He turns the portion of the barrel down to fit in the breech, and machines the breech to accept his .250 bolt. I purchased it (used) off of eBay as a Christmas gift to myself lol.

 

[Red_Ryder_Sniper]

Why would we talk you out of a disco? They are a blast! I'm putting two together now, one pretty close to stock, the other bottled and regulated in a boyds stock. If I remember correctly the bottled one was giving me 750 fps with tons of shots last time I had it together. The other had all the magnum air goodies, but even with a double tube kit was only good for 7 shots at close to 60 fpe with jsb 25grn.
You can spend alot and have a blast with these, but they are a great squirrel gun stock with a decent tune.

 

[Gibsonvair]

I picked up a rifle today. Bushnell Sportview scope. I think it is 4 power with paralax good at about 30 yards. Not sure what kind of wood the stock is made from. I ordered two triggers from Magnum Air Power. One for this rifle and one for my 3622.

 

[Red_Ryder_Sniper]

I picked up a rifle today. Bushnell Sportview scope. I think it is 4 power with paralax good at about 30 yards. Not sure what kind of wood the stock is made from. I ordered two triggers from Magnum Air Power. One for this rifle and one for my 3622.View attachment 530428
View attachment 530419

Nice buy! If you want to sell the factory trigger message me a price

 

[Gibsonvair]

We have an airgun show scheduled in Greenfield, Indiana on April 12th. I may try to sell some of my other guns there to fund this project. https://indianaairgunshow.com/? How much could I ask for a new old stock .177 Discovery still in original packaging?

 

[Red_Ryder_Sniper]

Hard for me to say, I never thought the pumps where worth the price but the rifle should go for $300 nib

 

[Red_Ryder_Sniper]

It's a LW barrel, originally sold by Mountain Air Custom Airguns. He turns the portion of the barrel down to fit in the breech, and machines the breech to accept his .250 bolt. I purchased it (used) off of eBay as a Christmas gift to myself lol.View attachment 529676

Which tube did you use?

 

[Gibsonvair]

Nice buy! If you want to sell the factory trigger message me a price

I will message you when I get it swapped out. The plastic triggers are great when polished, bend the safety/sear spring, replace the trigger return spring with a much lighter version, and add a screw to limit the intermediate linkage. This makes them a two stage with a clean break. I did all of this to my Anniversary 362 (metal except the cover) and my 3622. I will probably replace the plastic barrel band with a metal one as well. I am curious what you might use it for.

 

[Red_Ryder_Sniper]

The disco should have a metal barrel band stock. I want to use the trigger on a disco build, I find that the factory triggers work fine with a little tweaking

 

[Red_Ryder_Sniper]

I'm trying to build one back as close to stock as possible, I built a couple up to what I thought I needed and gave the old parts away years ago..... now I want a stock one lol and am slowly building parts as I find them

 

[Gibsonvair]

close up of New Old Stock buttstock