Prometheus MS90 Question

Mandalore · November 7th, 2011, 14:27

I just installed a prometheus MS90 on my Umarex 416 and it's shooting pretty consistently at about 300fps. I read online that its supposed to be around 330-340fps. Do you think I have an air seal issue or is this just how this particular spring works in my rifle? I'm making this my indoor gun and want it shooting below, but close to, 350 fps. I tested with both a 9.6 1600mah mini nickel and a 7.4v lipo.

JonsM4 · November 7th, 2011, 14:34

Sounds about right...MS100 is about 340-350

Crunchmeister · November 7th, 2011, 15:36

Sounds right to me. I have an MS90 in my C8A3 and it shoots a steady 310fps through a tightbore.

ThunderCactus · November 7th, 2011, 15:48

+1, the MS90 is 300, the MS100 is 345

Mandalore · November 7th, 2011, 18:21

Awesome, thanks guys. Looks like I'll be buying an MS100!

L473ncy · November 7th, 2011, 18:50

Is this for CQB? because if you actually do the math there's pretty much no difference between the time it takes for a BB going at 270 FPS vs. 330 FPS to reach a target at "CQB distances". Just stick with the MS90 if you're setting up a CQB rifle.

Mandalore · November 8th, 2011, 00:45

Yes, I will mainly use it indoor but I do plan on using it outdoor as well, which is why 300 is a little low for my liking. Although I guess I probably could've just got a higher spring for outdoor use. Oh well, I already ordered the MS100 as I thought it would be a good balance for both indoor and outdoor so that I can avoid constantly opening up my mechbox.

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November 7th, 2011, 14:27	#1
Mandalore Trader rating Join Date: Dec 2010 Location: Stratford, ON	Prometheus MS90 Question I just installed a prometheus MS90 on my Umarex 416 and it's shooting pretty consistently at about 300fps. I read online that its supposed to be around 330-340fps. Do you think I have an air seal issue or is this just how this particular spring works in my rifle? I'm making this my indoor gun and want it shooting below, but close to, 350 fps. I tested with both a 9.6 1600mah mini nickel and a 7.4v lipo. __________________ WE M4 Raptor VFC HK416 KWA MP7A1 KWA HK45 VFC SCAR-L G&P VLTOR M4 KJW Hi Capa

November 7th, 2011, 14:34	#2
JonsM4 Trader rating Join Date: Aug 2009 Location: What's my 20?	Sounds about right...MS100 is about 340-350 __________________ King Arms M4A1 Colt : ICS M4 C-15 : KJW G23

November 7th, 2011, 15:36	#3
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	Sounds right to me. I have an MS90 in my C8A3 and it shoots a steady 310fps through a tightbore. __________________

November 7th, 2011, 15:48	#4
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	+1, the MS90 is 300, the MS100 is 345

November 7th, 2011, 18:21	#5
Mandalore Trader rating Join Date: Dec 2010 Location: Stratford, ON	Awesome, thanks guys. Looks like I'll be buying an MS100! __________________ WE M4 Raptor VFC HK416 KWA MP7A1 KWA HK45 VFC SCAR-L G&P VLTOR M4 KJW Hi Capa

November 7th, 2011, 18:50	#6
L473ncy Trader rating Join Date: Oct 2004 Location: 11-30-24-1W5	Is this for CQB? because if you actually do the math there's pretty much no difference between the time it takes for a BB going at 270 FPS vs. 330 FPS to reach a target at "CQB distances". Just stick with the MS90 if you're setting up a CQB rifle. __________________ ಠ_ಠLess QQ more Pew Pew READY TO >> RACE

November 8th, 2011, 00:45	#7
Mandalore Trader rating Join Date: Dec 2010 Location: Stratford, ON	Yes, I will mainly use it indoor but I do plan on using it outdoor as well, which is why 300 is a little low for my liking. Although I guess I probably could've just got a higher spring for outdoor use. Oh well, I already ordered the MS100 as I thought it would be a good balance for both indoor and outdoor so that I can avoid constantly opening up my mechbox. __________________ WE M4 Raptor VFC HK416 KWA MP7A1 KWA HK45 VFC SCAR-L G&P VLTOR M4 KJW Hi Capa

Prometheus MS90 Question

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