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Old 06-25-2014, 01:07 PM   #531 (permalink)
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Does the hammer 7 have any chopping/loading issues with first strike rounds? Also if anyone has any idea what kind of consistency they are getting with FSR's that would help also. I want to build a custom version for FSR only.
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Old Today, 05:20 AM   #532 (permalink)
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Has anyone done any mods to the internals of the hammer 7 to get a lower operating pressure. Is there any possible way to do that?
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Old Today, 10:01 AM   #533 (permalink)
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Quote:
Originally Posted by zunkted View Post
Has anyone done any mods to the internals of the hammer 7 to get a lower operating pressure. Is there any possible way to do that?
Mine is setup at about 500 psi. I replaced the valve spring with a weaker, but longer spring. The idea being to maintain some of the seal pressure but not increase the force on the open valve as much as the stock spring. That let me back the velocity adjuster out. You can't back it out all of the way though. The adjuster sleeve can clear the end of the power tube and let the gas out of the side, lowering the velocity drastically.

I also drilled two more gas ports on either side of the existing port in the ASA, so that the CO2 could get from the top of the ergo reg to the valve better. I ended up filing out the walls between those holes so that it is kind of a ^ shaped hole now.

Run your fingernail down the power tube. Mine had some turning marks in it that I polished out.

I know it does 2 mags per 12g, which is the only way I have it setup. I need to get some good .686 round ball and see how many shots it will do. FSRs are always worth changing 12gs, and not good for efficiency testing.
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