Bad tune or gun needs breaking in?

[tedshred]

I just got my first Chony, and the information from my guns has me wondering.

I've got two Crosman G1's and the stock one shoots stronger (about 20 fps more with an average of 876fps) than the one I tuned following Charlies B19 info, as well as adding his trigger and apex seal. The stock one has over 1000 shots, and the tuned one has only 100. Will the tuned one slowly increase in power with more breaking in?

[Gene_SC]

Ted it is not unusual for a freshly tuned springer to shoot a lower FPS at first. It really depends on how much tar you use, how tight the new seal is, and if you make a custom spring guide how tight it fits in the spring. Also if you wipe clean your barrel bore it will take a few hundred pellets to re seaon it.

I find that most of my tunes I do do not improve velocity at first but for sure it smooths the firing cycle out a great deal. After you run a tine or two through a fresh tuned springer you will see and increase on your FPS. Your main concern it consistancy on overal fps variation. This in itself really will bring in your accuracy. The rest depends on you..:)

[tedshred]

Thanks Gene,
The shots were pretty consistent between 842 and 855. I'll keep running the pellets through and check it again after a few tins.

[Gene_SC]

Just keep shootin her Ted and she will come around. Those numbers are great as far as extreme deviation goes. If you are a paper shooter like me, I do not worry about how high the fps is but how close the deviation is..:)

[tedshred]

Kinda like compression readings in an engine. Don't want too much deviation.