Using the Garmin XERO

[ptf18]

Fellows. I've got a Garmin XERO. Would like to know if its readings are inaccurate if you do not locate it/ position it within the limits Garmin says to....... 5 to 15" AFT of the muzzle AND 5 to 15" Left OR Right of the muzzle.

And..... are the readings more accurate if you hold the distances closer to the 5" than the 15".

Thanks

 

[rlporter507]

mine is on my scope stand and is farther rearward than they say and works fine. verified by by oehler crono, same vel.

 

[Straightshooter1]

Fellows. I've got a Garmin XERO. Would like to know if its readings are inaccurate if you do not locate it/ position it within the limits Garmin says to....... 5 to 15" AFT of the muzzle AND 5 to 15" Left OR Right of the muzzle.

And..... are the readings more accurate if you hold the distances closer to the 5" than the 15".

Thanks

I've not tested mine for accuracy outside of what Garmin suggests. Give how the radar works, I think when you do use it out of those parameters, it'll change the accuracy some, but not enough to be of much concern, unless it's way out of the parameters. Having it too close, I imagine the barrel gets in the way some??? But it's all a matter of angles where the radar wave can be first picked up as the projectile exits the muzzle compared to when it's further down range. I think the bigger then angle the more error is introduced.

 

[CJ6]

I haven't seen any issues yet. I generally put it even with the forend and to the side (maybe a foot) but I don't measure it when placing it down. Barrel lengths go from 22 inches to 32 inches, so some have well over two feet to the muzzle.

 

[NCVarhtr]

I wonder if any FPS needs to be added to get the actual Muzzle Velocity like some of the older chronographs???

 

[rlporter507]

Post in thread 'garmin head to head with my oehler'

May 23, 2025

My set up time is even longer. I made 2 pieces of plexiglass with 3d printed inserts that go in the sensors slot. I put a cross hair on both, then aim at the target, put in a laser bore sighter and adjust the sensors so the red dot hits both my inserts cross hair. I have never shot my crono doing this.but it takes a painful long time.

• rlporter507

• 

this test was shot off the bench, with the spotting scope to my left with the garmin on the rod. so it was about even with delta ring and about the height of the barrel. so thats about 19 inches from the muzzle.

 

[Straightshooter1]

I wonder if any FPS needs to be added to get the actual Muzzle Velocity like some of the older chronographs???

When I first got my Xero I set it up with my MagnetoSpeed v3 and found the difference of only ~2-4 fps. Likewise, I set it up next to a LabRadar and that too was hardly any difference.

 

[NCVarhtr]

Thank you very much...