Maverick Tuning Titanium hammer weight

[Chukar60]

I stopped by the local air gun shop today and they were installing a slug power kit on a Maverick Sniper.
I did not give the slug power kit much thought and followed them out to the range to watch the first test shots.
The first shot pushed a 34 gr slug across the chronograph @ 968.
I looked down and noticed the power wheel was on adjust. I double checked the chronograph and I had read it correctly.
they turned the power wheel to 7 and the velocity dropped to 780 fps.
They opened the gun up and I saw the titanium hammer and mentioned that I read the hammer would eliminate any or most of the power wheel adjustment.
Back out on the range they set it at adjust got 965 fps power level 2 produce 980 fps and from that point up the speed dropped.
I assumed the power would just stay the same as it went up.
So the question is what is happening to make it lose speed? I can see where more spring would cause it to use a lot of unnecessary air and may impact accuracy but not a drop in power.
Could somebody please enlighten me as to what was going on?

 

[Jlowe]

What caliber is it? What are the reg settings? I'm assuming 25cal, but not sure. I've done 1032fps with a 34 grain pellet out of my Maverick Sniper in 25cal. I'm pretty sure with the Tungsten you may be able to get 1050.

 

[Chukar60]

It is a 22 cal. 2nd reg was at 145, the IHS was backed out as far as it could go and allow the gun to cock the hammer.

 

[Nsboost]

It is a 22 cal. 2nd reg was at 145, the IHS was backed out as far as it could go and allow the gun to cock the hammer.

Too much hammer for the reg pressure. When you have a ton of hammer smacking the valve.. you have to have the reg pressure turned way up.
Its a hammer/regulator balance.. Too much hammer and not enough reg you lose FPS... too much reg and not enough hammer, you lose FPS. Its a bit of a dance you do finding harmony

 

[Chukar60]

Too much hammer for the reg pressure. When you have a ton of hammer smacking the valve.. you have to have the reg pressure turned way up.
Its a hammer/regulator balance.. Too much hammer and not enough reg you lose FPS... too much reg and not enough hammer, you lose FPS. Its a bit of a dance you do finding harmony

I was wondering about that but I have never experienced it. However I have never dealt with the titanium hammer weight or seen one until today. That thing weighs like a ton of bricks.
Thanks for the replies

 

[Jlowe]

22 is maxed out at that power. That's what I got with the 22 Sniper. You would have to go with the Tungsten hammer weight to get any more.

 

[Chukar60]

22 is maxed out at that power. That's what I got with the 22 Sniper. You would have to go with the Tungsten hammer weight to get any more.

Sorry I said titanium hammer weight. Have no idea where that came from. Old age I guess.
They installed a Tungsten hammer weight.

 

[Jlowe]

This is as consistent as I could get my 22 Maverick with the Tungsten hammer weight. It went higher but this was much smoother, sounded better and most consistent.

 

[Mikerochburns]

What caliber is it? What are the reg settings? I'm assuming 25cal, but not sure. I've done 1032fps with a 34 grain pellet out of my Maverick Sniper in 25cal. I'm pretty sure with the Tungsten you may be able to get 1050.

What is the tune you had in your .25 mavrick to get those numbers ? Can you run down your whole set up to me ?

 

[revenger]

Pretty simple, turn in the internal hammer spring, lower pressure some, then keep adjusting pressure and hammer tension at number 7 to get your highest reading. I would go in half turns on the internal adjuster also as big swings may have you chasing your tail.

 

[Jlowe]

What is the tune you had in your .25 mavrick to get those numbers ? Can you run down your whole set up to me ?

170/145 with Tungsten hammer weight. IHS almost maxed out.