Tuning FX Maverick .30cal tuning?

[ccaruthers1979]

So best tune on fps people getting on there Maverick .30cal mine is around 855fps seems to be grouping good at 50yrds keeping a nickel size group with cheapo gun rest any suggestions on going faster on fps and keeping a good group .

 

[18.13]

I've been shooting the 45gr and Hades at 904 and without adjusting it shoots the 50gr at 873. 600mm reg at 125

 

[ccaruthers1979]

Thanks my reg set at around 115 so pretty close to yours might have to adjust mine up a little to see how much it changes

 

[amindrup1977]

has anyone seen that they have a brass upgrade for the hammer spring guide you can get from 1mm to 3 mm it basically increases the pre load , they have higher mm ones too but they say any higher than 3 mm my cause the spring to bind and you would need to shorten the spring 

 

[Airgunmann]

If it goes against your hammer it will increase hammer weight and spring preload 

 

[kendive]

I have an FX Maverick .22 500mm and the .30 500mm barrel kit. I emailed FX on the best way to tune and setup for the .30 500mm barrel.

I got the Med and Heavy hammer's from them. I'm using the Med and getting around 860fps with the Hades 44.75gr

This is what they emailed me and what I started with...

FX Part Numbers for hammers. 

Heavy Hammer Part# 17003 - (13.3gram)

Medium Hammer Part # 19215



This tune is for a .30 caliber 700mm using 44.8grain JSB pellets.
Regulator 1 - 140 bar
Regulator 2 - 105 bar
Hammer adjustment screw - 5.98mm
Power wheel - 7
You will need to up all of these numbers a bit MINUS THE ADJUSTMENT SCREW to achieve a decent speed.
Your goal should be around 880fps

 

[GA_LeadHead]

I've been shooting the 45gr and Hades at 904 and without adjusting it shoots the 50gr at 873. 600mm reg at 125

Forgive my ignorance, I'm new. When you say my reg at 125, which reg are you referring to?

 

[18.13]

The second reg which is now 150/122

 

[itaylor00769]

I know this is for :30 caliber maverick but I have a 25 that shoots 34 grains at 930 My front reg is on 155 and my 2nd reg is on 130 I have my barrel trun to the slug side which is dual port