AirMax P15 .25
Came last night. nice looking little pup is light as advertised. Spits AA 25.4s 796fps Hi, Lo 576 from just adjusting the hammer spring. trigger not bad nothing in the paperwork on what the reg is set at.
Pulled the stock off as i was unscrewing the rear mount bolt i heard something spring loose. nothing fell out lol. inspecting the bolt threads you could tell how far it was screwed in. so i screwed it in to see how far it moved the trigger rod that was what sprung free.
looks to be about 3 or 4 threads sticking through the hole hitting the trigger rod. i put it back together and just left out the rear bolt the front bolt holds it fine for now. i’ll cut a washer for it later. the side lever started out a little rough. the arm link seems to be hitting a square corner left over from milling i’ll hit that with a file later. not really crazy about the 11mm scope rail but looks like skilled laborer could whip up a weaver rail in no time. on sound at 1 meter away 796fps on my cheap sound meter 114dba, 1meter away 576fps 104dba.
ok so instead of making a washer for the rear mounting bolt i went ahead an sawed of 5 threads. that seemed to work best.
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Put a airforce sound lok Kit in the oem shroud replaces the other baffles. Was 121dba oem baffles, 114dba my weilranuch moderator and now 112dba with the airforce kit.
900+ is back courtesy of Lee5.45! Reg set at 140b this round.
Failed to get a larger delrin sleeve to work. Lol I sure don’t have the equipment to build a plenum out of metal. I’ll leave that up to the guys with the right tools for the job! Shooting it 903/905 that couple times sure put a smile on my face.
Ordered some 11/8 delrin. Going to see if I can squeeze a couple more cc. I tried going with a slightly longer sleeve In the 1″ material lol it just leaked and the oring wasn’t sealing.
Shot a couple mags at 140 nothing over 890 so I dropped it back to 130b. Not been able to repeat the 900+ lately.
Ok so thought I’d try upping the reg to 140bar not working big leak. Pressured up holding so far.
BINGO! Wingman where ever ya are. 1. 903 fps with .25 JSB 25.39 second shot 905 hot damn!
Ok so sleeve is in and has 180bar and holding.
So had some delrin rod laying around. Decided to make a sleeve giving it another 10cc of air behind the reg.
Just cc the plenum 10cc all it’s got.
Mike guess the only way to find out will be to buy one. I plan on buying another p15 in .177. won’t be a Diana though.
So is the new Diana ,the new spa guns?
Just wondering if Diana is going to improve the air guns or just re badge them?
Mike
Mile high hunt. Taken from 10 to 75 yards.
Mile high shot string.
Created: 12-11-2017 09:58:27 PM
Description: P15 shot string
Notes 1: 20 bar fill to 10 bar
Notes 2: 5 mags would be best.
Distance to Chrono (FT): 1.00
Ballistic Coefficient: 1.000
Bullet Weight (gr): 25.390
Altitude (FT): 5280.0
Temp: 50 °F
BP: 24.81 inHG
Shots
# FPS FT-LBS PF
48 769 33.35 19.52
47 782 34.48 19.85
46 786 34.84 19.96
45 791 35.28 20.08
44 795 35.64 20.19
43 803 36.36 20.39
42 806 36.63 20.46
41 813 37.27 20.64
40 815 37.45 20.69
39 820 37.91 20.82
38 820 37.91 20.82
37 824 38.29 20.92
36 823 38.19 20.90
35 819 37.82 20.79
34 820 37.91 20.82
33 817 37.64 20.74
32 818 37.73 20.77
31 822 38.10 20.87
30 822 38.10 20.87
29 819 37.82 20.79
28 821 38.01 20.85
27 821 38.01 20.85
26 812 37.18 20.62
25 822 38.10 20.87
24 822 38.10 20.87
23 822 38.10 20.87
22 819 37.82 20.79
21 821 38.01 20.85
20 823 38.19 20.90
19 824 38.29 20.92
18 811 37.09 20.59
17 823 38.19 20.90
16 821 38.01 20.85
15 823 38.19 20.90
14 820 37.91 20.82
13 820 37.91 20.82
12 823 38.19 20.90
11 820 37.91 20.82
10 821 38.01 20.85
9 822 38.10 20.87
8 820 37.91 20.82
7 822 38.10 20.87
6 825 38.38 20.95
5 823 38.19 20.90
4 822 38.10 20.87
3 825 38.38 20.95
2 826 38.47 20.97
1 795 35.64 20.19
Average: 815.69
StdDev: 12.49
Min: 769
Max: 826
Spread: 57
True MV: 815.78
Shots/sec: 0.08
Group Size (IN): 0.00
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I didn’t stick with the airforce baffle kit. chucked up the end piece that holds the oem baffles in the lathe. Run a 1/2x 20 tap
through it. Ordered up a donnyfl p15 Adapter. Stuck in oem baffles to where the adapter fit. Added a Sumo. Put the airforce baffle kit in my weihrauch moderator.