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mcguyver · January 22nd, 2008, 00:24

The "M" in the cylinder name is meant for "metres per second". However, springs are not a prescise science. There is some allowable deviation that manufacturers will allow. That's why some M150s for example will be slightly under 500 fps on the low end to near 550 fps on the high end. Some M130s are 415 on the low end to 460 on the high end. M110 can be 360 to 400, M90 can be 320-350.

I have 2 M90s, one is 330 and one is 350. Both my M150s are 515ish, my M110 is 395ish and my M130 is 430ish.

January 22nd, 2008, 00:24	#9
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	The "M" in the cylinder name is meant for "metres per second". However, springs are not a prescise science. There is some allowable deviation that manufacturers will allow. That's why some M150s for example will be slightly under 500 fps on the low end to near 550 fps on the high end. Some M130s are 415 on the low end to 460 on the high end. M110 can be 360 to 400, M90 can be 320-350. I have 2 M90s, one is 330 and one is 350. Both my M150s are 515ish, my M110 is 395ish and my M130 is 430ish. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.