Does anyone believe power data supplied with a gun?

No! Both the Krals I bought new came with a sheet which (allegedly) showed testing at 11.x with Superfields . One was over 12 and the other well over 13 with heavier pellets
 
In my case where I have spent £1500 on a daystate group gun, no.

I wonder if manufacturers should probably be testing and adjusting using heavy pellets.
 
In simple terms, trust, but verify. Would I believe a bit of paper from an unknown source that references power numbers calculated using imaginary numbers printed on the front of a tin of hopes and dreams? They hold the same weight as your average politician’s ramblings.
 
Not sure if It's still the case but Daystate used to supply some different data for their guns power:rolleyes:

I once chrono tested 20 huntsman Regals and all were out by at least 1.5 ft lbs...
 
I would trust it as much as the little test target that comes with HW springers. I have a friend who sold airguns, through Beeman, and said he saw several test targets with the wrong size holes in them. The serial# was correct, but there might be a .177 hole and the gun was a .22.
 
zogg364 said:
Not sure if It's still the case but Daystate used to supply some different data for their guns power:rolleyes:

I once chrono tested 20 huntsman Regals and all were out by at least 1.5 ft lbs...
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Funny that, my .20 Regal was 10.6 with JSB exacts and just under 10.9 with heavies straight from the factory.
Obviously the test sheet showed considerably more.
I never bothered though as it was incredibly consistent and accurate.
 
CJD said:
Funny that, my .20 Regal was 10.6 with JSB exacts and just under 10.9 with heavies straight from the factory.
Obviously the test sheet showed considerably more.
I never bothered though as it was incredibly consistent and accurate.
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I meant I tested 20 individual regals from the same batch as opposed to a .20 cal rifle

Although my .20 Regal was the same power as yours... awesome rifle (y)
 
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I've had 2 rexi's via range right and am convinced the data sheets are generic because it says 8.3's used, and just chucked in any old box, i have 2 chronos and both gun shoot in the low tens, of course the sheet says 11+
Actually just taken one apart and the h/spring adjuster and spring, looks like it was installed with an axe, threads are shot and won't budge, typically noone has any in stock, the weird thing is it runs in the 9's with 10.4 heavier pellets
 
The problem with data sheet power, is that using the gun at a different temperature, or with any other pellet other than the actual tin of pellets used when testing, can give you wildly different results :oops:

Just look at a test I done ages ago - these are all the same brand, size and type of pellet, but there was over a full fpe between testing them in exactly the same conditions Shrug tt

How is a manufacturer supposed to give an accurate test when the reality is so different Homer face palm


Grey Shadow Shot String.webp
 
Talyllyn said:
I've only had 2 guns that have been supplied with a data sheet.

The first one was a Benjamin Akela that was returned as it wouldn't feed pellets reliably which makes me wonder how they managed to get the data.

The second one, a Reximex Lyra has a data sheet stating that the testing was done using RWS Superfield pellets giving 11.51fpe which looks OK, however the weight quoted for the pellets is 8.3grains - Superfields are 8.4grains! The difference is small and only makes gives a small increase to 11.65fpe. Not a critical difference in this case but the data should be correct.

The Lyra has been tested since (on 2 different chronos) and actually came out at ~10.9fpe.
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No I have had chrono data from some quite mainstream manufacturers which I cannot believe had ever been true....

I had a rifle that according to the chrono data was shooting a 11.2 foot pounds but according to myself 500 pellets later it was still shooting at 9.6. after it went back it came back at 11 but with chrono data showing 11.2 again !
 
I test all of my guns and set the power where necessary or by request. I want to know what each rifle/pistol is doing before it goes out with the results sent directly from the chronograph.
 
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