Regulator tolerance

[Keyman62421]

What Is the acceptable maximum variance of a regulator. for instance if you're shooting 880 fps, 1% is 8.8 fps. That would seem reasonable to me. I would think .5% should be the shot to shot allowance. That should give you good shooting. Maybe im asking too much from a $2000+ air rifle!
Tell me im wrong.

 

[John "spysir" Blount]

I cant seem to link it but I typed " extreme spread" into the search feature here and man the results were so easy to compare, nearly an instant library of what rig does what.

I'll stick with around 10fps ES and a standard deviation of 2 or 3 would be nice for BR.

"What's acceptable" from your view or the manufacturers? Might be like "accuracy" ?

1.5% in the real world is common.

John

 

[Guest]

Hi Keyman,
For an honest test of your rifles' regulator "variance" you will need to shoot pellets that all weigh the same. I suggest you weigh some pellets out to a tenth of a grain on a Lyman digital grain scale. Then when you shoot them across your chrony you will get a better idea of your regulator's performance. Some people assume that all the pellets in the can weigh the same as what it says on the label but this is far from the truth. There is actually a great disparity between the weight of the pellets, and this in turn shows a great disparity in velocities displayed on the chrony...which could lead one to think the great difference or "variance" is due to regulator fluctuations rather than the true culprit which is in great part due to variance in pellet weights.

You may ask Huub Andressen at Huma-Air what the average variance of his regulators is by sending him an email at [email protected]. He has the equipment necessary to answer your question from a scientific point of view. I think we may be surprised by his answer...

Best regards, Chuck