Just Installed the Huma Reg in my Utah AirGuns WarCat .25 Any pointers?

[RonT]

The Huma regulator is installed I set it @ 145 I will be shooting Jsb King 25.39 

I don't have access to a chronograph so I was wondering is the reg at 145 good ?

What velocity can I expect should I lower the reg or raise it?

I would like it shooting at 900.

Thanks

 

[wyshadow]

Can't do much without a chronograph. It would like trying to drive in the dark with no lights

 

[RonT]

Can't do much without a chronograph. It would like trying to drive in the dark with no lights

Very true was just asking for some experience feed back.

 

[DeadEyeDill]

Feed back would be don't do it with out a chronograph. 

They are one of the most important tools for airgunners. 

Also not that expensive probably around the same price as that reg 

 

[BigTinBoat]

Feed back would be don't do it with out a chronograph. 

They are one of the most important tools for airgunners. 

Also not that expensive probably around the same price as that reg

+1

You could (likely will) wind up getting less shots, at a higher ES depending on your hammer spring tension.

 

[tsmith]

I just put a huma in my .25 wildcat mk1 this weekend.

set it to 130 bar. I am getting 820 at optimal hammerspring setting with the 34 grain heavies. So i backed it off to 800.

im no expert but 145 should be more than enough.

 

[Bob_O]

Very nice Ty! Bet the shot count is still pretty decent at that pressure.



Ron,

You'll want a chronograph (for best results) in order to set the proper tension on the hammer spring. If you'd like to get it up and running without a Chrono, I'd recommend 8 turns in (from the point when the threads engage) on the hammer spring nut. 

That should put you in the ballpark. I agree with Ty that 145bar should be high enough. Shoot a couple of groups at 35 to 50yds and see if it's accurate at that setting. Let us know how it goes!!

 

[Hookster]

At 150bar I'm getting 920fps with 25gr Kings out of my Compact. Didn't adjust hammer spring yet. Shoots lights out.

 

[Bob_O]

Sounds about right Hookster!

 

[SMH77]

Ok, question: I put a Huma in my son's WC MK II .25 cal (NOT compact) with the reg set to 150 bar from Huma. The velocity is set to shoot heavies at about 825-830 fps, but the spreads are still pretty high at 24-29 fps for 10 shot strings. Should I be lowering the reg, and turning the HST higher, increasing the HST, or ? It's still not shooting quite as nicely as I want for him so I appreciate any experience / advice you can lend. I don't know what the number of turns is for the tension, currently.



Sean 

 

[RonT]

Very nice Ty! Bet the shot count is still pretty decent at that pressure.



Ron,

You'll want a chronograph (for best results) in order to set the proper tension on the hammer spring. If you'd like to get it up and running without a Chrono, I'd recommend 8 turns in (from the point when the threads engage) on the hammer spring nut. 

That should put you in the ballpark. I agree with Ty that 145bar should be high enough. Shoot a couple of groups at 35 to 50yds and see if it's accurate at that setting. Let us know how it goes!!

I Really Appreciate every response, I will have a chronograph by the weekend.

Here Is My WareCat,Beautiful piece of work!!

 

[Bob_O]

Wow, that is beautiful!!

SMH,

Going down to 5 bar will drop velocity about 15fps. That was the case with the Wildcat 25 I had. If you go to 145bar and tune the HS, it should get you the same velocity but with a tighter ES.

My WC was shooting the 34gr at 848fps avg at 150bar, ES of 6 and SD of 2, and 1.5" at 100 yds. That ended up being 8.5 turns on the HS. You might end up somewhere around there, maybe 8.25 turns?

 

[NMshooter]

If you live in the West, you can pick up a Chronograph at Sportsman's Wharehouse for about $100. Of course you can always go on-line.

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[Mrshosted]

With out a Cronie you can try adjusting your regulator down to 135bar and adjusting your hammer spring for the most shots per a fill. Watch for the POI to start dropping. When it goes off the regulator one of two thing happen the poi could shift up for a shot or two or start dropping like a 1/2 each shot. There's a detailed right up on GTA about regulator setting. I try to have the lowest reg setting with hammer spring some where middle of it adjustment range. Regulated gun aren't for super high power, but high numbered shots with best average power for the gun and its tune.