Tuning Fx maverick sniper 22caliber tunes

Shooting what?; pellets/slugs and what weight projectile?

Hola.

Si bien yo poseo el VP, tal vez le sirva de referencia.

1° reg.: 125

2° reg.: 90

Slug de 20.5 gns a 865 fps en PW7 - IHS 6 mm



Con los reguladores en 75 y 90 respectivamente, no alcanzaba los 800 fps

I will be following your post. I have a brand new FX Maverick sniper and have only put a few pellets through it so far.

Look at Steve's tunes from AEAC.........There's a sticky for it......3 barrels 12 tunes....how could you miss it?

All of my tunes are for a superior heavy barrel, but.. It shoots everything from 24.8 gr up pretty darn well in .218. My favorite tune is the 31.2 grain NSA slugs in .218. I shoot them around 970 fps. That is with the second reg around 155 bar and a little under the "knee". I can also dial the power wheel down to adjust or 1 and shoot the 24.8 grain at 850 fps for a darn solid house pest tune with no other changes. I never even shot my 700mm standard superior barrel. It has been sitting on a shelf since the day it arrived, because I had the superior heavy waiting

I have the heavy liner but shoot the Varmint Knocker 2S 30gr at 1030fps. First reg is at 179 and the second reg is at 154.

I can give you several from my notebook here. These are all with 700mm barrel and the hammer weights vary with the 7, 11, and 13 gram. YMMV of course

Tune 1

150/125

Hammer = 13g

Preload = 0mm

24.8 NSA PW7=990 PW1=910

25.39 JSB PW7=987 PW5=967 PW3=922 PW1=890

18.13 JSB PW7=1094 PW5=1094 PW1=1050

17 NSA PW7=1115 PW5=1096 PW3=1078 PW1=1060



Tune 2

170/150

Hammer = 13g

Preload = 0mm

28.5 NSA PW7-995 PW6=973 PW4=946

18.13 JSB PW1=1020 PW0=1000

31.2 NSA PW7=958 PW6=960 PW5=928 PW3=844 (WTF moments on these numbers for me)

25.39 JSB PW0=720 PW2=840

24.8 NSA PW3=1000



Tune 3

160/135

Hammer = 11g

Preload = 6mm

28.5 NSA PW7=950 PW6=915

24.8 NSA PW7=1000 PW6=970 PW5=925

31.2 NSA PW7=900

Same tune....barrel flipped to "P"

18.13 JSB PW2=955

Tune 4 - Barrel = 500mm

150/120

Hammer = 7g

Preload = 6mm

18.13 JSB PW7= 970 PW6=940 PW5=910

25.39 JSB PW7=855

17 NSA PW7=970 PW6=950



Tune 5 back to 700mm

170/140

Hammer = 13g

Preload = 0mm

31.2 NSA PW7=950 PW6-940 PW3=820

18.13 JSB PW1=1000 PW0=990

Tune 1 – Barrel = 700mm (Superior Heavy) - FX Maverick Slug Power Kit - Transfer Port 'S'

25.39gr JSB Monster Redesigns

140/120

Hammer = 13g

Preload = 0mm

PW 7 = 1005 PW 6 = 990 PW 5 = 950 PW 3 = 870

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Tune 2 – Barrel = 700mm (Superior Heavy) - FX Maverick Slug Power Kit - Transfer Port 'S'

25.39gr JSB Monster Redesigns

150/100

Hammer = 13g

Preload = 0mm

PW 7 = 905 

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Tune 3 – Barrel = 700mm (Superior Heavy) - FX Maverick Slug Power Kit - Transfer Port 'S'

34gr JSB Beasts 

150/122.5

Hammer = 13g

Preload = 0mm

PW 7 = 904

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Tune 4 – Barrel = 700mm (Superior Heavy) - FX Maverick Slug Power Kit - Transfer Port 'S'

25.39gr JSB Knock-Outs .217

150/120

Hammer = 13g

Preload = 0mm

PW 7 = 990

Thanks for all the info! Will be trying them out soon and will get back to you with my results.

Cheers,

Greg

On all these tunes, are you all still using the stock pin probe?

Sorry my bad, forgot to mention. I have the FX Maverick slug power kit installed with 13g hammer weight. I also have an 11g hammer weight which works great, but tunes are different. I purchased 2 slug power kits and from second one re-worked the supplied 13g hammer weight down to 11g on my hobby lathe. All tunes on 'S' transfer port.

In the quest to find perfect tunes I was busy for a short while this weekend, found these interesting ones:

Tune 1 – Barrel = 700mm (Superior Heavy) - Slug Power Kit - Transfer Port 'S'

25.39gr JSB Knock-Outs .217

165/130

Hammer = 13g

Preload = +1 turn CCW

PW 5 = 988 - 995 (Great grouping!!)

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Tune 2 – Barrel = 700mm (Superior Heavy) - Slug Power Kit - Transfer Port 'S'

25.39gr JSB Monster Redesigns

165/130

Hammer = 13g

Preload = +1 turn CCW

PW 6 = 1004 - 1018 (Great grouping!!)

Just got on Huma Air and ordered the power kit for my Maverick. My goal is to tune her to shoot the 49.5grn NSA slugs at 950-1000 on PW 7, then also be able to shoot the Hades 44.75 at about 880FPS at say PW4 or 5. That is with the compact barrel.

Just ran this tune today.

700mm Heavy slug liner

NSA 27.5

Slug power kit without the pin probe

Hammer: 11 gr with 1.5 gr spacer. Total weight is 11.82 gram 

180/150

preload: 6mm

PW7: 975-980 

Grouped well at 20 yards. One ragged hole with 5 shots. I did not have time to shoot 50 yards.

PW6: Shot NSA 24.8 @ mid 980’s and they grouped better than the 27.5 slug



I am hoping this weekend to see if I can squeeze a bit more accuracy out of this set up with the hammer screw.