I used to feel the same way but as I looked at other units, my opinion changed. Especially after looking at the one attached below. It seems distance from the barrel or any air blast is not a factor in getting good readings. Consistency over the sensors would seem to be the most important factor."Cliff_Allen"I always put mine about 2 to 3 feet in front of the end of the barrel. Close enough to get accurate muzzle velocity, but far enough away to avoid errors from "blowback" or whatever they call it. I'm not sure it that even is a real thing with air guns but I figure the extra foot or two isn't going to hurt anything.
Both of my chronographs say 12 ft. Caldwell G2 and Oehler 35P"hunkaluv"My chrony is set up 12" from the muzzle. For consistency, I also take aim at a target while shooting over the sensors. I position the target so that the pellet flight path (and height) over the sensors will be the same every time. It's easy enough to do with a pcp, springers take longer obviously because of having to remove the rifle from the rests.
Caldwell states 10-15 feet for firearms. I do believe pellet guns are a bit different as there is no muzzle blast."kk4iz"
Both of my chronographs say 12 ft. Caldwell G2 and Oehler 35P"hunkaluv"My chrony is set up 12" from the muzzle. For consistency, I also take aim at a target while shooting over the sensors. I position the target so that the pellet flight path (and height) over the sensors will be the same every time. It's easy enough to do with a pcp, springers take longer obviously because of having to remove the rifle from the rests.
Wow. Twelve feet seems a stretch for an air rifle."kk4iz"
Both of my chronographs say 12 ft. Caldwell G2 and Oehler 35P"hunkaluv"My chrony is set up 12" from the muzzle. For consistency, I also take aim at a target while shooting over the sensors. I position the target so that the pellet flight path (and height) over the sensors will be the same every time. It's easy enough to do with a pcp, springers take longer obviously because of having to remove the rifle from the rests.
"crosman2016"
Wow. Twelve feet seems a stretch for an air rifle."kk4iz"
Both of my chronographs say 12 ft. Caldwell G2 and Oehler 35P"hunkaluv"My chrony is set up 12" from the muzzle. For consistency, I also take aim at a target while shooting over the sensors. I position the target so that the pellet flight path (and height) over the sensors will be the same every time. It's easy enough to do with a pcp, springers take longer obviously because of having to remove the rifle from the rests.
Just got off the phone with Oehler about setup for my Oehler 35 P for a PCP air rifle. They said 12 feet was best and not no less than 8 feet, you do have reprogram the switchs for 8 foot.
Caldwell G2 does say 10 to 15, 12 feet falls in between that.