1377, PumpUpTheJam

[Nukall856]

2A Georgia,
 Great info you have added with your Mods and Chrono Chart. 9.5 FPE and 12 pumps, sounds good. I havent bought or used any FTP Kits. Eliminating deadspace would yield the most Power, is there a way you can make the adjustment StayPut- threadtape, blue threadlock?
ExcellentWork Stay Alert
-------- --------

1322x18" # 722-971
Aluminum Breech < shortened to 4.5"
Stainless Extended Bolt Probe
1399 Stock w Farmsoldier StockPouch
Shimmed hammerspring
Opened Transferport

CPUM 14.4gr
5 Pumps

1. 428
2. 431
3. 431
 Avg 430 FPS
 5.9 FPE
---
10 Pumps

1. 536
2. 537
3. 537
4. 538
5. 540
Spread< 4 FPS
Avg 538 FPS
9.3 FPE
------- -------
SPE 14.5gr
5 Pumps
1. 425
2. 424
3. 428
 Avg 426 FPS
 5.8 FPE
---
1. 534
2. 528
3. 535
4. 533
5. 529
Spread< 7 FPS
Avg 532 FPS
9.1 FPE
-------
GHI 15.4gr
4 Pumps
1. 368
2. 364
3. 370
 Avg 367 FPS
 4.6 FPE
-------
5 Pumps
JsbRS 13.4gr
 440 FPS
 5.8 FPE
--------
  This 18"barrel has been accurate using CPUM, CPHP, CPP and some of the HN pellets i have. For some time this year the Barrel was on a C362x18". This 1322x18" had been waiting to be Chrono run and sight in, having parts moved around a couple months ago.       
  Today i had run out of shooting time to complete more testing including sight in. Though without changing the rearsight setting i was able to hit a empty 250 CrosmanTin 5 times at 15 yards and 4 pumps using Plinking grade GHI 15.4 gr. I will need to get the AG sight in for 5 Pumps at 15 yards and resight for 10 pumps at 20- 25 yards fornow using CPUM. This will be scoped after open sights are set up.
 1322x18" has Goodpower at 10 Pumps for +20yards. 5 pumps is good for 15-20yard Plinking Cans, targets, paper, or smaller feathers/fur. Fun

NVak

[2A Georgia]

is there a way you can make the adjustment StayPut- threadtape, blue threadlock?

Looking at Magnum Airpower Aluminum and steel double o-ring piston...yet another mod the price of a bargain gate 13xx...lol
I reset the headspace and will do some 5pump plinking soon

[Nukall856]

1322#722-057
 Steel Breech
S3-9x32mm HMD
Medium Rings
Extended Probe Bolt
BRLDC
1399 Stock


  This one has seen alot of 20 yard shots with 10 pumps.
 HNSport 13.7gr, RMK 14.0gr, CPUM 14.4 gr, RSD 14.5 have all done very good.
 
 After enough shots i can feel the pump pressure is lower than with a new or used shimmed pumpcup. So i removed the Svitvu 3-9x32mm HMD Scope then removed both the 1399 Stock and the pumparm. Using a Punch and a light hammer knock the pivot pin out, hitting from the bolt side. I removed the pump piston and reshimmed the pumpcup, this time using more rounds of threadtape.
 Before Reassembling i took the OEM front sight and cut the half with the sight off to allow for a Freefloat 1322x14".
 Reassemble by knocking the Pivot pin from the left side, reverse direction of removal. Ensure your Pivot Cap is centered before knocking the pin back in. Tap until pin reaches the part for the pumparm. Align pumparm with pivot pin and tap until the pin evenly protrudes.
-------

HNSport < HNS 13.7gr
5 Pumps

1. 399
2. 401
3. 395
 Avg 398 FPS
 4.8 FPE
---
10 Pumps

1. 495
2. 493
3. 493
4. 498
5. 497
Spread< 5 FPS
 Avg 495 FPS
 7.5 FPE
----------------
HNS 13.7gr
Pumpcup reshimmed, added more rounds than before.

 5 Pumps
1. 404 FPS
 5.0 FPE
---
 10 Pumps
1. 503 FPS
7.7 FPE
------- -------
 CPUM 14.4gr

 5 Pumps
1. 400
2. 399
3. 398
 Avg 399 FPS
 5.1FPE
---
 10 Pumps

1. 492
2. 496
3. 499
4. 493
5. 494
Spread< 7 FPS
Avg 495 FPS
7.8 FPE
-------
RSD 14.5gr
 5 Pumps

1. 399
2. 404
3. 399
 Avg 401 FPS
5.2  FPE
---

 10 Pumps

1. 496
2. 496
3. 500
4. 493
5. 500
Spread< 7 FPS
Avg 497 FPS
8.0 FPE
-------

JsbRS 13.45gr
 5 Pumps

1. 411
2. 400
3. 411
 Avg 407 FPS
 4.9 FPE
---
 10 Pumps

1. 511
2. 510
3.507
 Avg 509 FPS
 7.7 FPE
-------
 Reshimming the Pumpcup picked up a gain of around 6 FPS with 5 pumps and a gain of 8 FPS with 10 Pumps and HN Sport 13.7gr.
 Later ill need to get the scope resight in.

NVak

[2A Georgia]

Tracking

[Nukall856]

1322x14" # 722-057
Steel breech w Extended Probe Bolt
S 3-9x32mm HMD
Medium Low rings
1399 Stock w Farmsoldier Stockpouch
BRLDC
--------
1377x14" # 622 -720
Extended Probe Bolt
BR Barrelmounts x4
G4x32mm
Medium Rings
1399 Stock < shortened by 2 "
BRLDC
-------

 For some time i had the idea to shorten one of my 1399 Stocks. After moving some parts around i got where i had 1377x14" with a scope mounted on BR Barrelmounts, but the eye relief was too far to comfortably shoulder the AG without riding far up on the 1399 stock.
 So i took a knife and a ruler and a Stanley Carpenter Saw. Marked right where the buttpad of the stock begins and marked where 2" would be removed from the LOP. As it is a 1399 Stock on a 13xx has a LOP of 16", that is Long compared to most other Stock Length Of Pull. After the 4 cuts were made, i used a Coarse Doublecut File to even out the 4 mating faces that will be joined.
 Taking 2 of 1.25" screws and 2 drillbits < one under the diameter size of the screw threads another bit large enough for the screwhead. Large bit drilled halfway through the butt, followed by the narrow bit to make way for the threads on through to the stock.
 Screw on until both screws are tight.  Now sporting a 14" LOP, now i have no problem getting to the proper eye relief.

NVak

[2A Georgia]

1322x14" # 722-057
Steel breech w Extended Probe Bolt
S 3-9x32mm HMD
Medium Low rings
1399 Stock w Farmsoldier Stockpouch
BRLDC
--------
1377x14" # 622 -720
Extended Probe Bolt
BR Barrelmounts x4
G4x32mm
Medium Rings
1399 Stock < shortened by 2 "
BRLDC
-------

 For some time i had the idea to shorten one of my 1399 Stocks. After moving some parts around i got where i had 1377x14" with a scope mounted on BR Barrelmounts, but the eye relief was too far to comfortably shoulder the AG without riding far up on the 1399 stock.
 So i took a knife and a ruler and a Stanley Carpenter Saw. Marked right where the buttpad of the stock begins and marked where 2" would be removed from the LOP. As it is a 1399 Stock on a 13xx has a LOP of 16", that is Long compared to most other Stock Length Of Pull. After the 4 cuts were made, i used a Coarse Doublecut File to even out the 4 mating faces that will be joined.
 Taking 2 of 1.25" screws and 2 drillbits < one under the diameter size of the screw threads another bit large enough for the screwhead. Large bit drilled halfway through the butt, followed by the narrow bit to make way for the threads on through to the stock.
 Screw on until both screws are tight.  Now sporting a 14" LOP, now i have no problem getting to the proper eye relief.

NVak

Very nice custom LOP sir!

[Nukall856]

1377x14" # 622-720 < pic above>

BRLDC
BR Mounts
Gamo 4x32mm
Extended Probe Bolt
Shortened 1399 Stock
TP I.D. opened up w Dremel
Shortened Trigger return spring
Shimmed pump cup

Ok get this thread back up and running. I've had this one for nearly a year.
This 1377x14 is finally run through the Chrono.
I had it shooting very good with Crosman Match Grade 7.9gr. before the test. Also CPD and CPT 7.4gr do good.
Mainly used to shoot cans at 15 and 20 yards with light 7.4gr pellets that do good.  Using CPUM 10.5gr I can have it setup to hit a little high at 20 to hit 27 yards. But for now it's left a bit flatter for 15 and 20 yards.
   This time mainly hunting type pellets being tested. CPUM 10.5 gr is the clear winner in FPE category. This means this 14"barrel is a loose fit barrel. My 177x18"barrel does best in FPE with the SSDagger 10.0gr, being a lighter fit barrel than this x14".
I have A lot of tins of CPUM 10.5gr. great to have a barrel that loves them.
My St arli nk is still down so no pics till the new antenna gets here.


52°F

10 Pumps

CPT7.4gr
1. 621
2. 617
3. 621

Spread< 4 FPS
Avg 620 FPS
6.3 FPE
-------
CPHP 7.9gr
1. 606
2. 606
3. 610

Spread< 4 FPS
Avg 607 FPS
6.5 FPE
-------
ADH 9.0gr
1. 572
2. 574
3. 565

Spread< 9 FPS
Avg 570 FPS
6.5 FPE
-------
SSD 10.0gr
1. 544
2. 545
3. 550

Spread< 5 FPS
Avg 546 FPS
6.6 FPE
-------
CPUM 10.5gr
1. 557
2. 555
3. 555

Spread< 2 FPS
Avg 556 FPS
7.2FPE
-----

NVak

[2A Georgia]

1377x14" # 622-720 < pic above>

BRLDC
BR Mounts
Gamo 4x32mm
Extended Probe Bolt
Shortened 1399 Stock
TP I.D. opened up w Dremel
Shortened Trigger return spring
Shimmed pump cup

Ok get this thread back up and running. I've had this one for nearly a year.
This 1377x14 is finally run through the Chrono.
I had it shooting very good with Crosman Match Grade 7.9gr. before the test. Also CPD and CPT 7.4gr do good.
Mainly used to shoot cans at 15 and 20 yards with light 7.4gr pellets that do good.  Using CPUM 10.5gr I can have it setup to hit a little high at 20 to hit 27 yards. But for now it's left a bit flatter for 15 and 20 yards.
   This time mainly hunting type pellets being tested. CPUM 10.5 gr is the clear winner in FPE category. This means this 14"barrel is a loose fit barrel. My 177x18"barrel does best in FPE with the SSDagger 10.0gr, being a lighter fit barrel than this x14".
I have A lot of tins of CPUM 10.5gr. great to have a barrel that loves them.
My St arli nk is still down so no pics till the new antenna gets here.


52°F

10 Pumps

CPT7.4gr
1. 621
2. 617
3. 621

Spread< 4 FPS
Avg 620 FPS
6.3 FPE
-------
CPHP 7.9gr
1. 606
2. 606
3. 610

Spread< 4 FPS
Avg 607 FPS
6.5 FPE
-------
ADH 9.0gr
1. 572
2. 574
3. 565

Spread< 9 FPS
Avg 570 FPS
6.5 FPE
-------
SSD 10.0gr
1. 544
2. 545
3. 550

Spread< 5 FPS
Avg 546 FPS
6.6 FPE
-------
CPUM 10.5gr
1. 557
2. 555
3. 555

Spread< 2 FPS
Avg 556 FPS
7.2FPE
-----

NVak

Very tight ES.  I bet the groups are phenomenal.  Great work!

[Nukall856]

2A Georgia,
 Yes a good FPS spread. Usually I would take 5 shots to get a better idea of spread.,, but yesterday's test included 150 pumps. Using breakbarrels it's no problem to get a 10 shot string,, mainly because I don't have to pump 100 times, heheh.
 I've had good groups with this but yet to shoot Paper with this 1377x14". Yesterday I received two of 6.9" 1377 mounts from yabEEbay cost was 9.99 ea. I installed one on this 1377x14" and the other on a 1322x14.6". Good sturdy one piece picatinny 3d printed mount. Having it mounted I can still use my open sights, I can feel the mount is doing a very good job of holding the Barrel and Air tube, WebZapper was the seller's name.  Pics later once my sta rlink is up.
 To install the mounts I removed the breech and slid on to where I needed it then reassemble.
 One thing the 6.9" when mounted near the breech it will cover over the serial#. I'm thinking to trim these two to see my Serial #s.
 Also I need to figure out what I haven't chrono tested yet in this 13xx thread.  I'll add more at a later time.
 Thank you 2A Georgia,
Excellent Work Stay Alert

NVak

[Back_Roads]

 Have you seen the 3D printed breaches from TKO, right or left hand bolt and 11mm or weaver rail? I put one on one of my c362's and love it !
https://www.tko22.com/section8

[Nukall856]

Back_Roads,
  I have seen those from Airg unmod s dotCom. Lately I have had them in my cart a couple times when I was thinking of adding another C362.. but, maybe that means,,  soon . Looks very good, even comes in 3 colors.
 I have the AGM LDC on C362#430 and the one made for the C3622, good products.
 Excellent Work Back_Roads

NVak

[2A Georgia]

Have you seen the 3D printed breaches from TKO, right or left hand bolt and 11mm or weaver rail? I put one on one of my c362's and love it !
https://www.tko22.com/section8

I assume that will fit a 2240?
That on Harley would allow a PB pistol style Red Dot.....plug and play

[Nukall856]

2A Georgia,
 Yes that breech should fit all Cros manLego type AGs, 13xx, 2240, 362..
 My 1377xBRLDC wears a reddot sight every now and then. It is good if you have a 1399 Stock or your shots are braced or supported, mainly because a Reddot sight or a Pistol scope magnify all movements as you aim for the target, every single wibble will lead to a wobble and unless you have a stock or supported shot it is alot of a headache seeing how much the POA Moves around,, to me.. But itl work either way. I have the reddot on my 1377 for times I think I'll need to see my sights in the dim twilight hours.

NVak

[2A Georgia]

2A Georgia,
 Yes that breech should fit all Cros manLego type AGs, 13xx, 2240, 362..
 My 1377xBRLDC wears a reddot sight every now and then. It is good if you have a 1399 Stock or your shots are braced or supported, mainly because a Reddot sight or a Pistol scope magnify all movements as you aim for the target, every single wibble will lead to a wobble and unless you have a stock or supported shot it is alot of a headache seeing how much the POA Moves around,, to me.. But itl work either way. I have the reddot on my 1377 for times I think I'll need to see my sights in the dim twilight hours.

NVak

Thank you sir.  In true SSS fashion I read the description at the bottom of the link after posting. It will fit the 2240 but good to know about wibble/wobble...the BSA pistol scope didn't work out on the pp800r because it ran out of elevation adjustment and wouldn't hold POI on bag rest.  I have a steel breech on my modded 2240 shawty so not sure if I want to pull that to go to 3D printed.  I wish all AG manufacturers (Like the DAR3) would just put a Pic Rail on anything made after 2020...ijs

[Nukall856]

2A Georgia,
 I have had a Hammers 2x20mm Pistol scope for a bit over a year now . I've had it on a UxTrevox and a 1322x12"and a 1377 for awhile. It is good and hold zero, good full arm extension eye relief. Just though I did not like seeing every movement as I aim so it mainly was used rested on 20 yard shots.  Except on the Trevox which would not allow me to rest the Air pistol lest the pellets fly to wherever they wanted IME.
 Have you tried shimming your scope rings? Having your rings shimmed and mounted closer together may help with getting you POI closer to adjustment range. There are other who are opposed to shimming scopes, I have been shimming Scopes for 26 years.
 Using a Picrail or Weaver 20mm Base and rings does allow scopes to be mounted closer to AG center. Dovetail or 11mm bases and rings often sit offcenter in which I use a file on the rings to allow rings to mount closer to center..

NVak

[2A Georgia]

Nukall,
I'm looking on eBay now at the Hammers scope.  The 2x20 should work for sighting in at 24 yards at the indoor range and taking sub 20 yard shots for tree rats that choose to prove Darwin right by wandering within 20 yards of a tree stand during deer season...lol.  I was considering shiming the SigSauer before giving up.  She's "zeroed" at about 7 yards now, but off the paper at 15+
Next two projects for the 800r will be shim attempt and Kydex drop leg holster....

[Nukall856]

2A Georgia,
 Having zero at 7 yards you would be hitting very high at 15-20+ yards. I don't know  the velocity range of the 800r, but you would need to shim your front ring.
 Yes that is the same Hammers 2x20mm Spring rated scope. I thought of adding a BSA 20mm for one of my 1322x" but maybe not at the moment as my Hammers 2x20mm is sitting unmounted for now. Thinking to mount it on a "plain" 1377 and use on rested 20 yard cans.


NVak

[2A Georgia]

2A Georgia,
 Having zero at 7 yards you would be hitting very high at 15-20+ yards. I don't know  the velocity range of the 800r, but you would need to shim your front ring.
 Yes that is the same Hammers 2x20mm Spring rated scope. I thought of adding a BSA 20mm for one of my 1322x" but maybe not at the moment as my Hammers 2x20mm is sitting unmounted for now. Thinking to mount it on a "plain" 1377 and use on rested 20 yard cans.


NVak

project pp800r is a 17fpe pistol and can push the MP Molds 35gr beasts to 457fps for 16.2fpe.  She'll push my Cast NOE 19.4gr to about 630fps.  The way the Sig Sauer is mounted there are not two rings but I will explore shiming the front of the optic to try and get a 15 yard zero.  Otherwise I might go back to a 2x20 but Hammers this time.  The Sig on the Notos would be like carrying a feather around for woods walks...not sure how accurate I would be beyond 15-20 yards without magnification and my eyesight

[Nukall856]

1322# 722-057
Return to innocence

Around a month ago one of my pistols took a fall. The rear of the pistol grip had cracked and opened to leave a +5mm gap, this caused the pistol grip to lean forward. So I removed the broken grip and kept the trigger return spring and the inside trigger parts.
  Later I moved some parts around to where #722-057 now has the original 10.1" barrel with original sight band and the lower pistol grip from my 1740x10.1". For now the .22x14" barrel is sitting <  15.4gr @ 475FPS < 7.6FPE in #722-555.
  One thing, the original breech screw was stripped inplace so I had to cut and break off the plastic breech to remove the stuck breech screw. I have an extra breech screw,,, somewhere,,, so instead of searching I used a T6 screw as a replacement. The screw held the breech down but I didn't trust it much so I added superglue into the screw recess to add to the hold. I also added glue to the front of the breech onto the Airtube. Next gorilla tape over the plastic breech onto the Airtube.
  I removed the Piston to reshim the pump cup this time using more thread tape.
 The Rear sight is shimmed with notebook cover plastic, front sight band is shimmed also to keep the barrel from moving.
  I have an Extended Probe Bolt without a handle. So I used a 8/32 x 1,1/4" machine screw that I glued into the probe then lined the new handle with glorious vinyl electric tape.
 Now setup to hit 15 yards at 8 Pumps and 20 with 10 pumps using CPHP 14.3gr. Crosman Barrel, Crosman pellets, why not ~~>>}

Shimmed pump cup
Opened TP
Shimmed Bolt
Shimmed front barrel band

7.30.2024
47°F
+10 mph from 4clock position

CPHP 14.3gr
8 pumps
1. 443
2. 438
3. 443
Spread< 5 FPS
Avg 441 FPS
6.2 FPE
--------
10 pumps
1. 457
2. 465
3. 462
Spread< 5 FPS
Avg 461 FPS
6.7 FPE


NVak

[Nukall856]

1322 #722-057
47°F
+10 mph from 4clock position

8 pumps
15 yards
5 shots
POA in-between the two bulls

NVak