Author Topic: New to Me Gen 1 .25 Marauder  (Read 877 times)

steveoh

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New to Me Gen 1 .25 Marauder
« on: October 06, 2017, 11:59:22 AM »
I decided I just had to try out the 350 Chevy of AirGuns. So I bought a used, and in beautiful shape Gen 1 Marauder .25.  I just got it home after sitting in the office all week. Removing the Action from the Stock made it easier to carry on my motorcycle.

This morning I filled the rifle with air, and loaded up the two magazines that did NOT come with the rifle.  (Shame on me for not asking for every detail in the world. It's bitten me twice so far after a dozen or more used airgun / airgun accessories transactions. Anyway, I ordered the magazines, and I'm now good to go.)

Sighted the rifle in with one of my compact Leapers scopes.  Took one magazine. Refueled the rifle and set up the crony.

Here's my 30 shot string using JSB King Heavy 33.95 grain pellets.

  • 732
  • 731.5
  • 734.0
  • 736.4
  • 734.2
  • 739.1
  • 738.6
  • 747.2
  • 745.1
  • 738.7
  • 736.4
  • 729.4
  • 728.6
  • 727.8
  • 716.8
  • 720.2
  • 717.10
  • 712.0
  • 700.4
  • 690.4
  • 690.2
  • 680.0
  • 668.2
  • 666.2
  • 667.8
  • 646.8
  • 631.7
  • 626.9
  • 603.4
  • 591.6

Average FPS: 701
Min FPS: 591.6
Max FPS: 747.2
Average FPE: 37.05

I did not monkey with any adjustments on the rifle.  Does this sound reasonable for a stock Marauder?

It is decidedly not nearly as quiet as Steelhead's Armada.  I see the baffles on the Gun 2 rifles are different. Think I need that set up.

The ping is rather pingy, isn't it? I want this thing to be way quieter.

Trigger is light years better than the triggers on my two Korean rifles, and the Big DAQ .58 Rifle.

I like the balance and heft of the rifle, though it does seem huge compared to my Sumatra. The floating barrel is new to me. Imm-a-skeered I'll tweak it just moving it around in the cabinet.

Up Next: Separate Action and Stock and send the Action to Travis for his Magic! Can't wait.


« Last Edit: October 06, 2017, 12:08:18 PM by steveoh »


  • Benicia, California
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Alan

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Re: New to Me Gen 1 .25 Marauder
« Reply #1 on: October 06, 2017, 01:07:19 PM »
All you need now is a TSS and a larger port. Doing so will get you about 100 fps better at about the same air usage.

  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

Dairyboy

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Re: New to Me Gen 1 .25 Marauder
« Reply #2 on: October 06, 2017, 02:27:03 PM »
Looks about right but those pellets are way too heavy for a stock .25. things can be greatly improved and sending to Travis is a great idea if not wanted to do yourself
  • Outlook, WA
John 3:16

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rsterne

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Re: New to Me Gen 1 .25 Marauder
« Reply #3 on: October 06, 2017, 02:44:25 PM »
A stock .25 MRod just doesn't have the FPE for the 34 gr. Heavies, IMO.... Either drill out the ports to 3/16", or change to the 25.4 gr. Kings.... It also looks like you need a bit less hammer spring preload, or if it can be done safely, a bit higher fill pressure, to even out the bell-curve....

Bob
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int3man

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Re: New to Me Gen 1 .25 Marauder
« Reply #4 on: October 06, 2017, 03:43:05 PM »
Hi Steve,  Congrats.  Yea Steelheads was worked over.  PM me and I'll Hook you up.
25.4 kings are the answer.
  • Central California
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.25 BSA Scorpion Huma Reg.
.25 Air Arms Extra FAC
.30 Kalibr Cricket
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WAR .22 Marauder, Huma, LW Hammer,  Rapid 70 Bull  Stolen
Flex .30  Stolen

Yes I still have an ICQ Number.  Raise your hand if you do.

Martin

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Re: New to Me Gen 1 .25 Marauder
« Reply #5 on: October 06, 2017, 07:51:10 PM »
Mine is a stock Gen 1 but it is quiet and i shoot the lighter JSBs.  Nice rifle just sitting there because i shoot the WARP all the time.
  • Madera CA
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steveoh

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Re: New to Me Gen 1 .25 Marauder
« Reply #6 on: October 09, 2017, 09:46:23 AM »
Ok with the lighter JSB 25.4 gr. Kings.

824
828.3
822.6
828.8
825.2
830.8
827.3
820.3
823.6
819.7
806.9
804.4
795.0
788.4
783.3
778.9
762.6
755.8
750.2
744.2
734.6
733.2
717.6
716.9
691.1
690.8
677.0
666.2
655.9
646.5

Low: 646.5
High: 830.8
AVG: 765.0
ES: 184.2
SD: 596.3

Start 3000 PSI
Finish 1400 PSI

One last round of Chrony numbers before shipping off to Mister Travis, Super Tuner Extraordinaire.
  • Benicia, California
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caniborrowsomeammo

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Re: New to Me Gen 1 .25 Marauder
« Reply #7 on: October 10, 2017, 09:09:09 AM »
Too much hammer spring. I would toy with it for awhile before sending out to the MAN. Just to get the gist of how it works.
Buncha BB guns that I don't get to shoot as much as I like. Building duck boats now that I'm "retired".

steveoh

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Re: New to Me Gen 1 .25 Marauder
« Reply #8 on: October 10, 2017, 09:41:46 AM »
Too much hammer spring. I would toy with it for awhile before sending out to the MAN. Just to get the gist of how it works.

Too late.

The "MAN" will get it Thursday, God Willing, The Creeks Don't Rise, and the whole state doesn't erupt in flames.
  • Benicia, California
Quackenbush .58 Outlaw
Shooting Chairs
Vallejo Ferry Schedule
Sam Yang 909s .45
Sam Yang Sumatra .25
RWS Diana 350Magnum Compact Pro .22
QB-79 .177
Crosman 1322
Crosman 1377 - HoRodded 10 FPE
Diana Model 27 (childhood airgun)
Tolman Skiff
Airgun Giveaway

Alan

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Re: New to Me Gen 1 .25 Marauder
« Reply #9 on: October 10, 2017, 10:20:28 AM »
One of the best parts of the state are already in flames! Ugh!
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

caniborrowsomeammo

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Re: New to Me Gen 1 .25 Marauder
« Reply #10 on: October 10, 2017, 10:24:14 AM »
Would be a miracle if the Creeks did rise :)
Buncha BB guns that I don't get to shoot as much as I like. Building duck boats now that I'm "retired".

fmglass

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Re: New to Me Gen 1 .25 Marauder
« Reply #11 on: November 29, 2017, 05:06:39 PM »
Travis is a miracle man, you will enjoy it.
  • Geneva,Ohio

triggertreat

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Re: New to Me Gen 1 .25 Marauder
« Reply #12 on: December 01, 2017, 09:04:55 PM »
Congrats on the (new to you) 350 Chevy. Yes, like others said, too much hammer spring on both strings or too many shots taken.  Travis will get you fixed up. 
  • Nashville, TN
Romans 8:1-11

22 Synrod Unregulated. Tuned using JSB 18.13gr:
30 Shots @ 31.02 FPE Avg., 1.36% ES (12 FPS), 1.58 FPE/CI
Mods: ART TSS & MDS hammer, MMHF barrel, Stock 25 cal. Valve spring, (w/Stock .22 TP, Valve & Porting)

25 Synrod Regulated. Tuned using JSB MKIIs:
24 Shots @ 55.92 FPE Avg., 2.08% ES (18 FPS), 1.45 FPE/CI
Mods: ART SS valve, TSS & MDS hammer, Hill Gauge port, Huma reg., .220 Porting