Chrono Confusion

[jambo1984 0]

hello all i recently purchased a rifle and yesterday got it chrono'd at two different gun shops. the first gun shop said my rifle was pushing average about 12.3 and the second one said it was about 11.8 both shops where using airarms pellets.

should i get my rifle turned down a touch to be safe i was told if i was to use pellet like bisley magnums then the power would increase.

[moxy 617]

Hi jambo and welcome to the forum.

 

Depending on which chrono they used its possible there could be variables but both readings are a little on the high side to be safe and for piece of mind.

A tune down could be in order.

 

What rifle is it?

 

I'm sure the lads on here will point you in the right direction and better advise.

[The one 8,585]

I got told the same the air airms s300 was putting out 11.7 LBS with air arms field diablos and they wanted to turn it down a notch in case old plod put heavier pellets threw it

[jambo1984 0]

i will get it de-tuned it down a tad cheers pal ...its a bsa ultra multishot .22 its the old type

[Mawders 595]

Ideally if its pcp you want it running at about 11.5 with heavy pellets at least then with light pellets it will only be at 11ft/lb. nice and safe then!

 

I'm a springer man so the pellet weights work the other way round, heavy pellets producing lower readings than light pellets. I try and have mine running at 10.5 to 11ft/lb to be on the safe side.

 

That said with springers I think they perform better in the late 9ft/lb to under 11ft/lb region for groupings and accuracy.

 

And lets not forget, mr rabbit isn't going to know any different.

 

So in answer to your question yes, if you get stopped with those readings I would be surprised if you get your rifle back or avoid prosecution!

 

Phil

[jambo1984 0]

Cheers I've just got to wait for the gunsmith to come off his jollies then he's going to sort it...I only got it chronod because I thought the power was low.glad I did now..

[A1WOC 212]

hello all i recently purchased a rifle and yesterday got it chrono'd at two different gun shops. the first gun shop said my rifle was pushing average about 12.3 and the second one said it was about 11.8 both shops where using airarms pellets.

should i get my rifle turned down a touch to be safe i was told if i was to use pellet like bisley magnums then the power would increase.

I’m surprised the first RFD that chronoed your Ultra gave it back to you! Why on earth did you have it chronoed again at another RFD and risk it being withheld?

Regards, Steve

[jambo1984 0]

The first one advised me to try the other one out ..that's why I went there as for him not holding it ..I don't know why he didn't