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Old 02-14-2020, 05:40 AM   #1
Skylv   Skylv is offline
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Scout Rifle VSR Build

Hi everyone,

After having read all the guides available and learning about most concepts that may be applied to airsoft BASRs, I'm planning on building my first VSR-10. However, due to the nature of the field I play in, I have an idea that may differ form the usual "sniper" concept. I want to build a more versatile rifle with the following characteristics:
  • Lightweight, short and maneuverable (G-Spec with no silencer comes to mind)
  • Reliable at many ranges, not necessarily long ones
  • High efficiency (squeeze most FPS with a set spring)
  • Light bolt pull
  • Fast target acquisition (this will come purely from externals)
After looking at all viable platforms to build from, I've finally settled on the Well MB02. Reason behind it is because the JG Bar-10 is relatively hard to find in Europe at a reasonable price point which is the only G-Spec alternative I know. I'm aware of the Well's off-spec cylinder which means I'd upgrade with the AirsoftPro trigger set if it becomes a necessity.

My field's limit is 550FPS with 0.2g BBs which accounts for 2.8J. I think the Well MB02 comes stock at 400FPS with 0.2s. This doesn't mean I want to reach that energy output. My interest is more towards achieving the most muzzle energy possible without necessarily changing the spring. I know a perfect air-seal and a tight bore will help with this but I'd appreciate any ideas that I may have skipped.

Secondly, I plan on using a long eye relief scope setup. Any input that may help me figuring out how to do this with the least amount of external modding is greatly appreciated too.

Finally I've settled on a Maple-Leaf bucking + AA hop-up chamber for better accuracy if this becomes a must. This however, is not the most relevant on the list for now.

What do you guys think of this whole setup? Is there anything I else I should be aware of?
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Old 02-14-2020, 09:26 AM   #2
Sodium   Sodium is offline
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You're really going to want to play with barrel ratios here. Use this link to determine which barrel length you should use for the weight you plan to use most: https://docs.google.com/spreadsheets...t?usp=drivesdk
In this, you will maximize joule creep and get the highest energy output possible.

You should also go for a weighted piston, whether that be adding lead tape to one, or buying a weighted piston like the WASP or SAP. This also increases joule creep.

Back to the barrel, tighter=higher fps.

Regarding the bucking, I have no idea what will both maximize accuracy and fps.

Edit: almost forgot! A bulltrig trigger will increase your energy output as well.

Edit 2: last thing: tbh, it seems like you aren't going for as much of a "scout" rifle, as you are going for an efficient rifle, which is what we are all aiming for. The bulltrig, tight barrel, and weighted piston, if tuned properly, might be able to creep you up to 2.8-2.9 joules with a 2+ RAPAX spring.
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Last edited by Sodium; 02-14-2020 at 09:30 AM.
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Old 02-14-2020, 10:05 AM   #3
Skylv   Skylv is offline
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Thanks for the input. I didn't know about weighted pistons so I'll definitely take a look onto that.

When it comes to cylinder/barrel ratios, I didn't plan going for longer than the stock length of 320mm so I was wondering how to squeeze the most power out of a overvolumed system with a set spring.

About the "Scout" rifle concept, I meant building a rifle more focused on mobility and ease for follow up shots for a more "aggressive" playstyle instead of the more usual "ranged plinker" most people think of when it comes to airsoft sniping. That's why a short and light rifle with a light bolt pull is desirable for me.
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Old 02-14-2020, 10:50 AM   #4
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With a barrel that short you'll want to use .48g-.5g bbs on a VSR system. That's as heavy as they make without getting into ceramics.

You could go even shorter barrel length wise but I think anything smaller than 250mm gets a little extreme and will require a very strong spring to generate proper power.

I'd run 300-370mm length barrel, heaviest bbs you can afford, AA chamber with Mr. Hop rubber for sure (don't skimp here as it's most important for accuracy), then depending on your barrel length you'll need something to the equivalent of a Rapax 2-3J spring. The shorter the barrel, the stronger the spring you will likely need even with a weighted piston.

Springs are cheap though, so I'd get both and tune and test to see which delivers the results you're looking for. If you are only chrono'd on .2g bbs then you could run a 3J spring with a heavyweight piston and still come in under 2.8J on .2g bbs. Your joules with .48g+ bbs would likely be in the 3.1-3.3J range though.
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Old 02-14-2020, 03:12 PM   #5
1tonne   1tonne is offline
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In the original post you mentioned that you did not want to change the spring. So even though most websites say that the G-Spec is about 400-450fps, it normally is not. Normally the G-Spec is only about 350-370fps when new. The FPS that they write down is normally the fps from the Pro (longer) version of the VSR10.
So with such low fps, you are really going to struggle to fire heavy bb's. I would advise upgrading the internals and putting in a bigger spring. But this will make the bolt pull harder.
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Old 02-14-2020, 04:02 PM   #6
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What about the hpa/co2 route?
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Old 02-14-2020, 05:09 PM   #7
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HPA is one way but it becomes bulky with a tank on your back,
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Old 02-14-2020, 05:16 PM   #8
Sodium   Sodium is offline
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Unless you go the magic marker route...
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Old 02-14-2020, 07:23 PM   #9
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Yeah by this point a few people have shoved HPA tanks up their rifles' butts ... even some 11ci tanks (but at that point they're pretty much replacing half the stock with tank- major surgery).
I used 8ci:
https://www.airsoftsniperforum.com/3...gic-trick.html
Looks like there are some 9ci tanks available with a quick Google:
https://www.magfedproshop.com/produc...15392168312918
Note that this does add some weight; my end result [including quite a hefty scope on top] is still lighter than my Tanaka [with a feather-weight scope] though- so really, it's still very light. The stock gun is kind of...uncomfortably lightweight anyway, in my opinion.
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Old 02-14-2020, 07:41 PM   #10
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Ugh, if someone would make an HPA bolty with the tank (removable) built into the stock I might finally make the switch (or an addition).

Nov? You there?
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Old 02-14-2020, 08:13 PM   #11
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Call me superstitious but I always felt having what is essentially pressurized gas tanks right next to your face is a disaster waiting to happen
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My loadout:

-Main: Ares Amoeba AS02
- Inner Barrel: Maple Leaf Crazy Jet 310mm 6.04 barrel
- Hop-up bucking: Maple Leaf MR. HOP 60 Degrees
- Spring: Custom
- Cylinder: Edgi Nemo cylinder kit
- Chamber: Action Army blue chamber
- Spring Guide: Edgi Nemo cylinder kit
- Piston: Edgi Nemo cylinder kit
- Scope: Discovery 3-12*42

-Sub: Tokyo Marui 5.1 Hi-Capa
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Old 02-15-2020, 04:06 AM   #12
Skylv   Skylv is offline
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My idea at first was to stick with the original spring for a while and squeeze the most power out of it even if it means having an underpowered rifle. However if this setup cannot lift heavy BBs then I have no issues changing the spring as long as it doesn't compromise the bolt pull "too much". I know this is inevitable with power upgrades but I could live with it.

That's why I planned on getting the most joule creep possible without actually going over my field's limit of 2.8J all in one small rifle so that it remains maneuverable. I don't think I would go for a even shorter inner barrel than the one it comes with.

For accuracy I'm definitely sold on the MR Hop bucking though I've heard Maple Leaf may have some QC issues.

Not fan of HPA setups though. I know the improvement is massive but I think I'd find it too cumbersome.
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Old 02-15-2020, 03:44 PM   #13
1tonne   1tonne is offline
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Quote:
Originally Posted by Skylv View Post
However if this setup cannot lift heavy BBs then I have no issues changing the spring as long as it doesn't compromise the bolt pull "too much". I know this is inevitable with power upgrades but I could live with it.

That's why I planned on getting the most joule creep possible without actually going over my field's limit of 2.8J all in one small rifle so that it remains maneuverable. I don't think I would go for a even shorter inner barrel than the one it comes with.

At 2.8 joules I would use a 0.45-0.48gm bb. Since your barrel length is set at about 320mm, you would need about an M170-M190 (maybe M190 with a coil or two cut) to get your field limit. This will make a harder bolt pull.
So really you need to decide on how hard you want the bolt pull to be. Obviously the weaker the spring the less energy and the lighter the bb you should be using.
So your choices on spring are really M150, M170 and M190. I would suggest the M170 and then if it is too hard to cock, just cut a coil or two. You may then want to use a 0.4gm-0.43gm bb.
Hope that helps. It is really just a trial and error thing that you are doing to get what you desire your rifle to be.
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https://www.airsoftsniperforum.com/showthread.php?t=6075
Advanced L96 Sniper Upgrade Guide
https://www.airsoftsniperforum.com/showthread.php?t=6465
Choosing the right spring and making it work
https://www.airsoftsniperforum.com/32...tml#post127126
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Old 02-15-2020, 03:59 PM   #14
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Get a Rapax 3J spring and cut the coil or weight the piston. Easy bolt pull for the power on those springs. I run a Hulk and it's not bad at all.
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Old 02-17-2020, 06:11 AM   #15
Pu7z   Pu7z is offline
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Quote:
Originally Posted by 1tonne View Post
HPA is one way but it becomes bulky with a tank on your back,
Well, a rig with 12g CO2 will fit inside the stock and yield around 100-120 shots at the J ratings that OP wants.

Mancraft has also released adaptors for 33g and 88g CO2 that should fit some stocks.





https://shop-mancraft.com/en/41-u-shape-exp-chamber
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