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Old Today, 07:53 AM   #26
Join Date: February 12, 2001
Location: DFW Area
Posts: 23,627
SO you have to understand the context when someone uses the term RPM.
Indeed. Fortunately the OP's context is quite clear--the question is obviously about cyclic rate.
What controls the rate of fire on an automatic weapon, bullet weight, recoil spring tension???
It depends on the type of action, to begin with.

The cyclic rate of a gas-operated gun can be increased by allowing more gas into the action. That's assuming the action is designed to handle it.

In a recoil operated gun, lightening the recoiling mass will generally increase the cyclic rate, depending on how the locking mechanism is set up. And, again, assuming the action is designed to handle the extra energy of the recoiling mass.

I think asking about one specific gun might net some more useful responses. I think asking the general question opens things up so wide that it's hard to give a good answer.
Do you know about the TEXAS State Rifle Association?
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