HW100 Low Power

[sh4d0w]

Hello all, 

I have just bought a used HW100, i was told it was 3 months old... on inspection MFR date being 2015, ffs. 



When i went to collect it i fired two through my FX Mk1 Chrony and i read a 11.2ft LB. 



However... a week later and a refill i put an assortment of pellets through and i ranged from 8.8Ft Lb on some JSB Magnum and max of 10.9 on some lightweight jobbies. 
I want to be using JSB diablos but they was 10.4. 



Before i start messing with it, are there any pointers for me to be looking at? 



I have just bought a full seal kit and an antitamper replacement kit with new spring but thought i would ask for advice before taking it to bits.



Many thanks



Mart

 

[Hobbyman2007]

There’s lots of grease in them when shipped. This would cause low power and velocity swings . Clean real good and use dry lube of your favorite flavour. I have one tunes to 14 FPE in .177 and it is a blast to shoot. Probably my favorite air rifle. 

 

[JamieUK]

Its normal for new airguns sold in the UK to run in the mid to late 10's. As you probably know the heavier the pellet the higher the ft/lbs, and manufactures air on the side of caution.

Its been a long time since ive shot a sub 12, but I suspect if you shot the heaviest available ( I guess bisley magnums?? ) you may see 11.5 to 11.7. Just below the legal limit.

The 10.9 you were seeing with light pellets kinda confirms this ( unless you are saying the gun is giving inconsistent readings?)

 

[Vana2]

Seems strange that the rifle was manufactured in 2015 but described as 3 months old. Guess that it could have been sitting in stock at the vendor.

I have a pair of HW100 FAC rifles (.177 & .22) and they are my favorites.as they are both very consistent. If the rifle is in fact only 3 months old it may just be a case of breaking it in.

With any airgun, after a quick check to get a baseline velocity, I always allow a tin or two before considering any serious testing and choosing a pellet. I'd say that unless there is a leak or some other obvious issue it would be best to shoot it a bit before becoming concerned. 

Fine rifle! Best of luck!

Hank