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Old 02-18-2013, 04:23 PM   #1
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Oh No! 750 FPS Sniper BB's...

Hello out there.. I recently had a breakthrough in building my L96 which led to a significant jump in FPS... A scary jump I will add...

I am currently throwing .32's between 725-750 FPS.. This was unexpected and now I'm under the assumption that I need to jump to a higher weight.. With that said, what brand and weight do you suggest that I move to?? I know the Madbull .43's are ok, but are there other companies that offer a .43, or higher, that has a better quality rating??

Any advice is greatly appreciated..

Happy Sniping..
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Old 02-18-2013, 04:43 PM   #2
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Dang dude... 750? That's going to leave a mark. Correct me if I'm wrong, but the FPS of a 9mm bullet fired from a baretta m9 is right around 900 fps... That is going to leave quite the mark.
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Old 02-18-2013, 05:08 PM   #3
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Dang dude... 750? That's going to leave a mark. Correct me if I'm wrong, but the FPS of a 9mm bullet fired from a baretta m9 is right around 900 fps... That is going to leave quite the mark.
Im pretty sure a .22 shoots at 900.. christ man, try to use some 43s or 50s.
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Old 02-18-2013, 05:11 PM   #4
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Im pretty sure a .22 shoots at 900.. christ man, try to use some 43s or 50s.
My bad I had it confused with my plinker! A 9mm bullet travels at 1200 fps.
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Old 02-18-2013, 05:17 PM   #5
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aside from that, at that point it might start to break skin, even from great lengths away... I used to have a pellet gun that shot 700 FPS, and I suffered a richochet that broke skin and I had to go to the hospital. Even though a BB is spherical, that can't be good. On the Airsoft Society forums, a guy got shot from about 100 feet away with a 600 fps DMR and got a gauge that looked like a real gunshot wound. If I were you, I'd go for atleast a 50.
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Old 02-18-2013, 06:11 PM   #6
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Even though some real steel guns shoot at 900 fps, they are using metal bullets that have a much higher mass than airsoft bbs, and they don't deform as easily as plastic so the impact is much more concentrated.

you guys are suggesting heavier bbs to bring down the fps, but do you guys understand why the heavier bbs have that effect? The higher mass takes more force to push, but it also has a lot more momentum and will just hit harder.

Cut the spring coil or get a lower powered spring. I don't know why you want that much fps, but it is completely unsafe, and will not help you in any way. I don't think this is what you think but I will say it anyway; more fps does NOT mean better accuracy. In fact the "optimal" fps for accuracy is around 350 fps. I forget exactly why this is, but it it was explained not too long ago.

May I also remind everyone of this rule?

8. Talk of 550+ FPS is prohibited. Anything over 550fps is beyond standard regulations and safety. We do not condone or care to hear about any hot rifles. Any talk will be removed from the forum.

That was taken straight from he official forum rules in the news and support section. There is a reason we have this rule.

My advice to you is to lower the fps on your rifle by at least 200 fps.
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Old 02-18-2013, 06:27 PM   #7
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I agree with master. I thought that rule existed on this board but wasn't sure if I was referencing my home boards in the back of my mind, that's why I didn't go past saying "ouch". I would definitely tone it down. If you want to work on a 750fps sniper, go for it, but keep it to yourself and your backyard. It will never be allowed on any field, as it is way too unsafe.

Also, on that note, airsoft gun internals start to break down after the immense strain put on the gun at speeds in excess of 550. I've ran some experiments before to see if it was even worth-while for pest control purposes, but I chewed up gears after 500 shots. It's not worth the effort or the money. We had coyotes killing chickens at my girlfriends house over the summer and I wasn't allowed to "borrow" their rifles. /sigh
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Old 02-18-2013, 07:20 PM   #8
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I didn't post to brag.. Just want to put that out there..

I'm a very well seasoned sniper and I designed all the internal components of my sniper which led to the discovery of the fps I was obtaining... I thought I was in the mid 400's...

I know better than to ever shoot another person with it.. Like I said, this is an experimental airsoft gun, however, it made me realize that I could design a system that is not only affordable, but very accurate.. All internals were made by me for me and I will be approaching companies with the idea after I make the final engineering specs..

So back to the subject at hand... When I figure out a way to calibrate this, "thing" to a more suitable fps for field play... What brand/weight of bb do you recommend I use that are in the legal limits for most fields??

Thank you..

Happy Sniping
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Old 02-18-2013, 08:48 PM   #9
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I got a solid 400-420 FPS on my gun (trying to get it down to 390-400) ANd I use 25s. Shoots pretty straight as far as I am concerned.
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Old 02-18-2013, 08:53 PM   #10
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The way you made it sound, I was under the impression you were trying to get it field worthy at this fps. If you aren't planning on keeping it at this fps, why are you trying to find the right weight bbs for it?

And to answer your question, I find bioshot .3g bbs are very good quality. I get a little under 300 feet of usable range using them. They are pretty cheap (if you get a few bags at a time that is, shipping isn't cheap), and they are biodegradable so you never have to pick them up. the heavier bbs are good for masking imperfections in the bbs and in a build, but I have no problem with .3g because the bbs are very consistently made.
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Old 02-18-2013, 11:43 PM   #11
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I am currently shooting .43's in my sniper rifle and they fly very straight. I could probably drop down a bit and save a few pennies. I will be trying .36's or similar next time around.

It's nice to see folks are pushing the designs forward. My first build shot .43's at over 500fps so I know what you mean. I finally got it toned down enough to be playable.

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Old 02-18-2013, 11:50 PM   #12
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Er um. .43's at over 500 fps? Fields rate the FPS based on the .2g standard. If you're hiting 500fps with .43's, your .2g fps has to be pretty darn high...
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Old 02-19-2013, 12:07 AM   #13
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We use.25's in NC but yah it was way too hot. I have no interest in hurting anyone just tagging them. My rule is if I would not let someone shoot my son with it how could I shoot at someone with it.

I did get that rifle down to a playable velocity before the electronics went left on me....

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Old 02-19-2013, 12:11 AM   #14
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If you are a seasoned sniper then you should have cut the spring on your rifle first and formost. Beacuse nothing is going to get you kicked off the field, and not invited to play with anyone in your area, than having a rifle that is shooting that hot! ( that is unless you have a group of guys that plays no fps games )

Don't worry about a bb weight, as they don't make one as high as you need. Get your fps down to a reasonable speed and then go from there.


In leaving all I can say... is don't be a douche and use this rifle on anyone.
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Old 02-19-2013, 04:32 AM   #15
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Originally Posted by Masterjuggler98 View Post
The higher mass takes more force to push, but it also has a lot more momentum and will just hit harder.
Uhm, I'm not quite sure about this statement, since when it comes to pain, it's about energy transfer. And when we talk about energy transfer, it's KE (kinetic energy) = (0.5)mv^2, in which velocity is exponentially more valuable than mass.

Unless, you are talking about fps bleeding, in which heavier bb's bleed less fps (and thus less energy and momentum) over a distance, but there comes a point in which a bb becomes too heavy to where a lighter bb hurts more.

Sorry, it's my OCD hehe.



Anyways, not quite sure why we are discussing this still. It's basically a "Which bb's should I use?" question now (after OP legalizes his gun), a question that's pretty much been answered quite often by now.
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