HW 90 Pressure settings were is the sweet spot?

Jump to latest Follow Reply
M

mskillen

Member
Jan 7, 2016
47
0
maryland, United States
Hi everyone,

Just looking for some input on the HW90, I purchased one in .22 caliber about a month ago.

I had the chance to take it out this last weekend, and get some pellets through it at my friends house shooting targets in the back yard.

2" groups and fliers all the time at 30 yards, I have allot of pcp's, springers and a couple of other gas rams so it's not me its the rifle.

I shoot allot as well, so I knew this was about trying to sort the gun and pellets out.

I was slightly disappointed in the accuracy I was getting, it was all over the place. so I put it back in the case and just shot one of my other rifles.

I have been shooting it in the basement at 15 yards. still trying to find a pellet that it liked, and it was still going pretty rough.

Over the Chronograph it was at 21ftlbs with 18.1 JSB's this was the only pellet that even tried to group well.

After doing some reading I decided to drop the pressure, so I took the screw cover of and started gently tapping the schrader valve to lower the pressure.

I now have it shooting at 19 ftlbs and this looks so much better even with the other pellets I have tested, everything looks to be heading the right way now.

Its really pretty amazing how consistent the gas ram is, it has a 3-4 fps spread per shot over the Chrony, I have PCP's that aren't this repeatable lol

Doe's anyone have past experience or a recommendation on where the HW90 really performs the best?

I am going to order the fitting so I have a way to pump it up if I have too, but until that comes in I don't want to go to low.

Would 16 to 18 ftlbs be to low or should I stay higher?

Thanks

Mark
 
Mark, i have a rx2, basically same thing but i have a laminate stock. I made the mistake of letting out toooo much air w/o a wa of putting it back. I had someone make me an adapter and if need be, i just go to the bike shop up the street and use one of their shok pump. well anyway i got it back up and to 17ft/lbs w/ the jsb 13gr. I still feel that i should lower it to 16ft/lb. hth
 
Upvote 0
Every one ive ever had including theobens shot best around 18 to 19 fpe for hunting purposes...if your just punching paper they get really tame around 15 fpe with a lot less jump in the firing cycle .

Another thing is that most HW barrels especially in .22 really like H&N FTT in 5.53 or larger head size! Another pellet ive had really good luck with is the H&N terminators. My HW80K loves them.

James from Michigan 
 
Upvote 0
Bought my HW 90 from AOA four or five years ago. They advised the H&N Sport FT Trophy of 14.66g's. Tried others a few times but am always back before a 10 pellet string.

The charging kit is the way to go, of course, but before I had the guage I just touched the valve stem a couple of times until it was easy to cock. Okay - I'd pumped it up to where it wouldn't cock and had to do something... After that it was easy to vary the pressure to correlate to the target: inside, outside, target, pesting...re-zero and have some fun. Very versatile. I agree with the observation of PCP accuracy out to 35,40 yards, too.


 
Upvote 0
Bought my HW 90 from AOA four or five years ago. They advised the H&N Sport FT Trophy of 14.66g's. Tried others a few times but am always back before a 10 pellet string.

The charging kit is the way to go, of course, but before I had the guage I just touched the valve stem a couple of times until it was easy to cock. Okay - I'd pumped it up to where it wouldn't cock and had to do something... After that it was easy to vary the pressure to correlate to the target: inside, outside, target, pesting...re-zero and have some fun. Very versatile. I agree with the observation of PCP accuracy out to 35,40 yards, too.


 
Upvote 0
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Resources
Menu