UTG tri-shot shotgun ammo problem

[Green-Ranger]

Hello of my airsoft gear i have a UTG tri shot shotgun and the FPS is about 330 but the spread of the bb's is very wide and i was wondering if i could use .25 gram bb's instead of .20 or will that slow the FPS down too much any and all help is appreciated.

[pappyjump]

well yes you can use .25s, it wont slow the fps down too considerably.

[El Diablo]

I'm just wondering but why would you wanna lower the fps? To lower the spread?

[Switchback]

The heavier your BB's, the tighter the spread and the lower the FPS. However, your gun retains the same energy for pretty much every BB. A .12 going 375FPS will feel almost the same as a .43 going 250. Just use .25's in your tri shot, and you should be fine.

[CalvinB]

well yes you can use .25s, it wont slow the fps down too considerably.

ummmm, .25 is 25% heavier than .20, Force=Mass * Acceleration. If mass goes up, acceleration goes down because force has to stay the same because the spring creates the force, the spring remains the same. If F=MA then F=1.25M*.8A meaning you lose 20% of your velocity. At 330, you're losing as near as makes no difference 100fps, thats a lot.

[Green-Ranger]

Thank you all for replies the reason behind the .25s would be because i would get a tighter grouping of bbs so i have a higher shot of getting someone out right now they are spreading very much with .20s i gues i just have to experiment.