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Mp7 bb speed

Kwa Mp7 BB Speed Fire Shoot Bolt

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#1 Thepounder23

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Posted 01 December 2012 - 03:31 PM

Hello again everybody, I was just curious how fast my Kwa mp7 would fire (with the stock bolt), a 363 mm 6.03 inner barrel, running on propane, with .3 and .36gram bbs. I am just wondering should I 1)purchase .3 gram, have it be too fast and purchase a low powered bolt, 2)purcahse .3 gram, and the speed being legal 400fps, 3) purchasing .36 and having it be legal, or 4) purchasing .36 and having to also purchase either the low powered bolt and/or flute valve.

#2 gcw360

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Posted 01 December 2012 - 04:02 PM

Too many variables to give a true and releasable answer unless someone has done that exact build.

#3 MultipleParadox

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Posted 01 December 2012 - 06:56 PM

Note that the speed itself is not important but the energy transferer by the BB

Fields limits are usually set for .2g as "standards". So if a 400fps limit is for .2g BB, increasing your BB weight to lower FPS at about 400 fps won't make your gun field legal; you're still going to be over the maximum energy corresponding to 400fps/.2g (roughly 1.5Joules)

For te record: http://m.wolframalph... energy&x=0&y=0



#4 Chuck S

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Posted 01 December 2012 - 07:23 PM

You want to put a 14" barrel on theMP7?!

-- Chuck

#5 gcw360

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Posted 01 December 2012 - 08:08 PM

View PostMultipleParadox, on 01 December 2012 - 06:56 PM, said:

Note that the speed itself is not important but the energy transferer by the BB

Fields limits are usually set for .2g as "standards". So if a 400fps limit is for .2g BB, increasing your BB weight to lower FPS at about 400 fps won't make your gun field legal; you're still going to be over the maximum energy corresponding to 400fps/.2g (roughly 1.5Joules)

For te record: http://m.wolframalph... energy&x=0&y=0
Thank you!  I have been saying this for a very long time too.





Also tagged with one or more of these keywords: Kwa, Mp7, BB, Speed, Fire, Shoot, Bolt

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