Author Topic: .25 armada journey  (Read 772 times)

oneshot61

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.25 armada journey
« on: June 19, 2018, 06:44:22 PM »
My .25 armada was a sweet shooting gun as it came stock from the factory. But it didn’t stay stock for long. War valve, opened to . .203, .203 barrel port,  44 grain  mds hammer and Tim’s dual wound long spring. I blew several ice maker tubing transfer ports as well as several of Tim hills. I made a brass one from a tubing connector with a oring on top of the valve. It’s about .192 interior dimensions. I achieved some serious efficiency with the valve at .187 and the valve spring fully tightened. 1.9 efficiency on a cold fill and 1.7 several times using 33 grain swaged. I know some have questioned it, and that’s ok, I did too. I didn’t even realize it till later as I have never checked the efficiency of any other gun I own.
I settled on 64 avg for 15-16 shots with 33 grain. 3/4 turn takes me to 985 or so but I like them at 940. The 45 though slower have a better bc down range.  The heavier swaged seem to have a lot of drag in the barrel. I sized the 38 grain bbt hollow point to .250 then stepped down to .249 and got some nice groups at 50 yards. I’m going to do more testing with them in the next week. Not sure where my efficiency is at with the larger port, I haven’t checked, but it i does have a bit more of a peak. I like the ability of this gun to reach out further now with accuracy and a bit more power.
 



Steelhead

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Re: .25 armada journey
« Reply #1 on: June 19, 2018, 08:43:19 PM »
This makes me drool. I've been wanting to turn my .25 Armada into a powerhouse. Unfortunately it's been down a for a while with a leak so it makes it even more close to home to see yours; I'm jealous!

I just ordered new O rings for mine and it will be the first time I've had it apart myself, so I'll probably learn a lot just from that.

Nice looking gun
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Airforce Texan .308
Benjamin Armada .25
Benjamin Prowler .177
FX Streamline .25
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oneshot61

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Re: .25 armada journey
« Reply #2 on: June 19, 2018, 09:50:40 PM »
Thanks! Love this platform, decided to try one more thing. Going to get a marauder stock so I can install my speed dial and see how it tunes out. Once I map it, it should give me a crazy shot count at this power, ... maybe
Leaks are no fun but once that’s fixed you’ll have a ton of fun with your gun. Even stock, I had a blast.
« Last Edit: June 19, 2018, 09:52:20 PM by oneshot61 »

oneshot61

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Re: .25 armada journey
« Reply #3 on: August 19, 2018, 07:43:44 PM »
I’ve never shot this gun with the larger ports for max power. Still haven’t maxed it out, but I dropped in my no bounce war hammer, kept the dual wound spring in, and with nearly 1/4 inch gap between the hammer and valve stem,  shot a 43.2 eunjin 960 , second shot, a 48 bbt hp @ 915. That was a 3k fill. I’m guessing I could hit 95 ft lbs @ 3100 psi. Lots of wasted air, need to tune the drag on the hammer. The war hammer is almost 80 grams. I put the heaviest mds I had in, 64.7 grams, and with a 1/16 gap shot the 48 bbt @ 860. I think 68-70 grams may be ideal and will add some weight to the hammer, max it out and find the tune for a mag. Just for fun. Then tune it back down to 62-64 ft lbs with the 33 swagged. My ace is my heavy hitter in .25, so I’ll keep this as my mid power gun.

mobilemail

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Re: .25 armada journey
« Reply #4 on: August 20, 2018, 06:42:45 PM »
I have a gen 1 Marauder I nicknamed the Tactirod.  It was built on a "Teryx Chassis", a completely aluminum stock with AR type stock and grip.  The whole pic rail along the bottom is machined aluminum integrated into the stock, it is not a bolt on part.  The hydrographics were well done on the aluminum stock and airtube. 

I actually bought this rifle used as a .22, but I recently converted it to a .25 and regged it while also working on another Marauder project.  It isn't currently configured as a hammer, providing 40 shots on reg @37fpe, or just over 800fps with 25.4gr pellets. This means I don't get to use the Clague device shown in the photo.  :-[

Gun as pictured weighs in at 10-1/4 pounds. Balances and points well when offhand shooting, but it wears on you in the field.



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oneshot61

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Re: .25 armada journey
« Reply #5 on: August 20, 2018, 07:17:05 PM »
That is a great looking gun! Nicely done! It’s amazing the game that can be taken at that power and that’s a lot of shots. The marauder air tube doesn’t lend itself to a lot of high power shots. That’s why in making it down some. Those jsb your shooting are crazy accurate out of the marauder. I’ll bet as a .22 with the Clague is whisper quiet.

mobilemail

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Re: .25 armada journey
« Reply #6 on: August 20, 2018, 07:19:40 PM »
You know that's right!  With the Clague, the hammer striking the valve was as louder than the noise at the muzzle!  (At least, as heard from the shooter's position...)
  • Carrollton IL

oneshot61

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Re: .25 armada journey
« Reply #7 on: August 20, 2018, 07:27:37 PM »
I just put a jsar depinger in mine. With the mds hammer it’s really quiet. I’ve got an ldc , just one I got from eBay, but not using it at the moment. I need to run some sound test when I turn it down.