Tuning Zelos Chronograph Results, Nate Chrony

[Rickstwowheels]

These were done with a 25 cal. Umarex Zelos with over 200 pellets through the barrel, the regulator set to 2000psi and the hammer spring flush. I used a Nate Chrony that is reportedly calibrated at the factory but I do not have another chronograph to use for comparison. In all of these shots the tank pressure was well above the regulator pressure. For each pellet there are two strings of five shots. Perhaps it is obvious to you guys but it took me a minute to figure out this screen, The data you are looking for is below the line of buttons that say "Save 1, Save 2..." The columns from left to right are 1st string, 2nd string, 1st string FPE and 2nd String FPE. The rows from top to bottom are low, high, average, spread and standard deviation, then the rows below the dash are the individual shots.

JSB Exact King 25.39

FX 25.4

JSB Match Hades 26.54

JSB Match 33.95

 

[actionpistol]

I've only got about 100 pellets through the barrel of my zelos 25 caliber. Just got it last week. Although Fed Ex had it circling between Ohio and Michigan for 2 weeks. I refer to it as the twilight zone of Fed Ex. But that's another story. So cleaned the barrel and ran through the chronograph last week. These are my 9 shot results for JSB 33.95 and 9 shots of AA 25.4 grain. Shot it briefly today at 30 yards since it was a blistering 34 degrees today. Didn't have much time left but seemed to like most pellets I tried JSB 33.95, FX 34, JSB Hades, and surprisingly NSA 26.8 grain slugs.
Have much more to play with though

 

[actionpistol]

Oh I haven't run the slugs through the chronograph. Just seeing what it likes at this point And that was a 6 shot target at 30 yards with the slugs. 2 shots to season the barrel before shooting this group.

 

[Rickstwowheels]

I have some of the Umarex slugs but have not run them through the chronograph either.

 

[JimD]

Looks like the fpe with the 33.95 in the first post was calculated with the lighter pellets mass.

Looks like the 25 zellos handles the popular 25 caliber pellets fine. My P35-25 likes JSB 33.95 but struggles to get them to 800 fps.

 

[Rickstwowheels]

Looks like the fpe with the 33.95 in the first post was calculated with the lighter pellets mass.

Looks like the 25 zellos handles the popular 25 caliber pellets fine. My P35-25 likes JSB 33.95 but struggles to get them to 800 fps.

Indeed it was.

 

[NateChrony]

These were done with a 25 cal. Umarex Zelos with over 200 pellets through the barrel, the regulator set to 2000psi and the hammer spring flush. I used a Nate Chrony that is reportedly calibrated at the factory but I do not have another chronograph to use for comparison.

The data you are looking for is below the line of buttons that say "Save 1, Save 2..." The columns from left to right are 1st string, 2nd string, 1st string FPE and 2nd String FPE. The rows from top to bottom are low, high, average, spread and standard deviation, then the rows below the dash are the individual shots.

Rick - glad its running ok.

Compare it to another Chronograph?
The NateChrony is calibrated to our certified/traceable master chronographs & is within 1fps @ 1,000fps.
If you do compare it to another chrony - check its specs!
Labradar - ~10fps @ 1,000
Garmin - 8fps @ 1,000 (depending on pro or not)
FX - do not state accuracy (!?!??!)

A+ feedback on the readout, there's a software update which add another column to the left of the save slots with the headings to help make it more readable if you want it.

 

[Gramps]

My Garmin Xero doesn’t work well in my basement range which is only about 20 ft & a lot of stuff for the radar to bounce off of so I purchased a Natechrony from Hajimoto. Seems it will fit the bill.