Madbull spring

[Hortons Heros]

I am a little confused...as usual.

I have a madbull spring and it says M100 on it but is also says #SP100. What can I assume this is shooting?

madbull non liner m100 #sp90

Dave Horton

[Phil_Black]

I had a madBull m100 in my m4 ans it was giving me 360 fps.

[Hortons Heros]

crap! I was hoping for under 350, I'll have to toss it in and get a chrono. Thanks for the reply

[Hortons Heros]

369-372

[Ronan]

Hmm change the nozzle to get a bit less fps to play CQB?

[Mantelope]

Originally Posted by Ronan

Hmm change the nozzle to get a bit less fps to play CQB?

Change the nozzle? To what? Are you actually retarded?

[Hortons Heros]

Kinda sucks, got it from 204 tact hoping for the Prometheus Non-Linear Spring MS100 and I recieve a madbull MS100. Goes from a hopeful 340 now I am shooting over 365!

Not sure what you mean by change the nozzle, how would that change anything? Wouldn't that just make it go up?

[Spa]

i think he means from an air seal nozzle (with oring) to a non oring nozzle...but if its stock it wont have an oring..so i have no idea either.

[Skruface]

Originally Posted by Hortons Heros

369-372

What other upgrades do you have? You may be able to swap a part or two out for "inferior" stock parts (like ditching a bearing spring guide or bearing piston head for a non-bearing version) and drop the velocity a bit to meet your target....

[The Saint]

Originally Posted by Hortons Heros

Not sure what you mean by change the nozzle, how would that change anything? Wouldn't that just make it go up?

I'm pretty sure he doesn't know what he's talking about, unless he's suggesting that you use the wrong nozzle for your hopup type to worsen your airseal, though that'd be a pretty stupid thing to do as well.

You could cut the spring, a couple coils would probably suffice. A last ditch solution, IMO, better off to buy a spring before doing that.

There is the "leave your spring compressed for a week" method, to fatique your spring into a lower fps.

Are you running a ported cylinder? If you're not, you can probably find a used ported cylinder in the sales section. If your cylinder is ported, you could use a different/increased porting.

Skruface is right, though, a more detailed breakdown of your internals would help.

[Hortons Heros]

stock internals, that's why I wanted to keep it under 350. 370 seems a bit much for long lasting internals.

[The Saint]

Well, my TM G36 has been running MS110 on stock gear for an unknown but significant amount of time.

If all your other parts are stock, what I suggested are basically your only choices short of buying a new spring.

[Hortons Heros]

what's your FPS?

[The Saint]

370ish, I've got a stock 247mm barrel on it.

[Skruface]

If it's a brand-new spring, it will usually settle in a bit lower after 2000 rounds than when you first install it. Run a bag of BB's through it and then check the velocity...I bet it drops 10-15 fps.