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I'm running .30's with a 540fps gun and my hopup is almost all the way off.
A 0.30g BB leaving the barrel at 540 fps will contain approximately 4.07 joules of energy.

If i'm calculating this correctly, you have almost a 170+ yard range with this rifle. This is awesome range, however it's also really really hot. What is your min distance? 50feet?

In calculating the speed of 4.07J would give you a speed of 662fps with a .20bb. Putting this out of the MIA satey standards for play on an organized field.

Curious, do you have any quick adjustments for dialing down the speed?
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