Different chrono readings???

Irishmaster

I know different chronos have different readings but today when i sold my 2 jg guns to tacops i had readings of 325-328 with my xcortech chrono and when he brought his madbull one(i think) it got readings of 305-315. Which one is more correct?

Leftyflip

Irishmaster wrote: »

I know different chronos have different readings but today when i sold my 2 jg guns to tacops i had readings of 325-328 with my xcortech chrono and when he brought his madbull one(i think) it got readings of 305-315. Which one is more correct?

I find the Xcoretech one's more accurate, others will say different, did you use two different types of BBs?

Puding

have a search on other forums and you will find that the madbull is notoriously unreliable at times, use the xcortech myself and would go with that as i;ve never had a problem with mine

P.K

im totally open to correction on this one, but
bringing in physics and numbers into this bigger numbers means smaller % error ie more accurate. I think ive seen the one he has which is one of the smaller ones so the xcortech would be more accurate as it as a bigger distance between light gates. But going by brand and experience the xcortech is more accurate as pudding has said

Irishmaster

Leftyflip wrote: »

I find the Xcoretech one's more accurate, others will say different, did you use two different types of BBs?

Same bb's. Well doesnt harm to have a higher reading so when you go airsofting you will always be under.

bullets

Chrono readings when it comes to airsoft really annoy me.
I'm a victim of having some airsoft gear measure perfectly within the Irish Limits only to travel to a skirmish site up the country on the same day where readings on a different chrono measure my gear as over the 1j mark. when several tests out my back garden showed well under the limit. (all with hop up off)

Have heard lots of stories about air pressure, tempeture,
valleys and hills and other such horse sh!te when it comes
to getting an accurate reading so I just dont know what to believe at this stage when it comes to airsoft.
Is it my guns? is it the chronos used? is it weather?

I've a borrowed Chrono for the last year (I really should give it back) that I've used for real steel shooting measuring speeds of about 2400-2500 fps when it comes to measuring fps. I've always thought it was accurate compared to the expected properties to the round used in real steel vs airsoft.
.
Yet I've got inconsitancies when it comes to measureing the lower fps ratings on airsoft gear.
(or the inconsitancies only appeared when compareing a real steel chrono to a chrono for airsoft where there by right should not
have any differences)

~B

Gray

bullets wrote: »

Have heard lots of stories about air pressure, tempeture,
valleys and hills and other such horse sh!te when it comes
to getting an accurate reading so I just dont know what to believe at this stage when it comes to airsoft.
Is it my guns? is it the chronos used? is it weather?

~B

I play regularly at Red Barn using the same gun & BB's chrono'ed on the same chrono & the weather defiantly affects the FPS. My gun can vary from .85j to .97j mainly depending on the humidity. FPS tends to go up with humidity problem comes when someone has fine tuned their AEG to .99j in a cool environment & then gets it chrono'ed in a damp field & its firing well over.

Unfortunately there is no easy answer to this short of all site owners agreeing to use the same chrono & having them calibrated regularly. Also use a handful of BB's supplied by the site so they are always the same. It would probably only work if the IAA got involved & made it part of their site affiliation process.

Until you can remove as many variables as possible you will always have these arguments of "its the chrono" "its the weather" "its the altitude"

Hivemind187

Gray wrote: »

"its the chrono" "its the weather" "its the altitude"

... or "It doesnt matter".

If everyone is measured by the same chrono or set of chrono's on any particular day then all things are rendered equal.

If your kit is over on a particular day then, as they say, its over. Hard luck. Maybe next time mate.

Hence (and I'm surprised this hasnt been said yet), 1j is a limit not a target. Aim for around the 300-310 mark with your kit and you should never find yourself being over. Stop worrying about range and power etc - ask any of the long-time players who have hit up the big games in England etc. Knowing how to set your hop up and how to shoot properly will get you far greater results than power alone.

For the record, the IAA did produce a set of guidelines for proper chronoing of equipment however the majority of chronos on the airsoft market can not be calibrated after market so there will always be a difficulty in assessing velocity and energy where variables like altitude, humidity, air pressure and sunlight are a factor.

Masada

Most people don't have the luxury of being able to tune their fps though, a lot of guns come in close to 1j as it is.,
as for the odd Reading though, I'd put t down to those madbull chrono's, their a pos.,:)

also, always chronograph indoors in a well lit area, you don't want bright spot lights or anything like that, defused light is best. If you do this you'll notice the variance in readings is lower as the chrono is suffering less interfereance from outside light.,