Well mb03 accuracy issues after upgrade

2619 Views 20 Replies 6 Participants Last post by SiliconeSword, 7 mo ago

Centerfire

Discussion Starter · Feb 9, 2022

I have a Well mb03 that I’ve been upgrading mainly to achieve more range. My upgrades include:
-Maple Leaf VSR-10 90 Degree Trigger Set for VSR-10 Sniper Series (2020 version)
-Maple Leaf 90 Degree Piston for VSR-10 Series - Black
-Action Army 6.01mm VSR-10 / M24 LTR Barrel 512mm
-Action Army m170 spring
-Maple Leaf Hop Up Chamber Set VSR-10
-Maple Leaf 70 autobot bucking

I’m currently trying out some Norvritsch .36g bbs. I’m using .36g based on what I’ve read here in accordance with my barrel length.
The issue I’m having is after all these upgrades I’ve completely lost all accuracy. And when I say completely I mean I have maybe 5ft groupings at 120ft. I had decent accuracy after the trigger and piston upgrades. All other upgrades were done at one time. I have Teflon tape at the bucking to barrel connection and on the threads for the cylinder head. I’m not sure if it’s an issue with the gun or if I need heavier ammo. My experience with aegs that needed heavier ammo normally resulted in bbs flying straight up as if they were overhopped. This gun is shooting bbs all over the place. Any advice would be greatly appreciated!

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SiliconeSword

· #2 · Feb 10, 2022

Look at making the nub in my signature, and look at upgrading to the Action Army chamber.

I'd also cut down the barrel to 400mm and buy some .48g unless you have a field with shitty rules, as heavier weight BBs have seriously developed in the last 10 years.
BBs are what make a sniper, like how bullets make a rifle, as you can shoot Brazilian surplus and miss a 5 gallon bucket at close range, or buy quality match grade ammo and whack a deer in the head at 800m.

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SiliconeSword

· #6 · Feb 10, 2022

Didn't realize you had the ML chamber, I'd look at shimming the arm or making my nub for it in that case.
Likely something to do with bolt lockup, can you move the bolt in and out while the handle is down in the stock slot?

Definitely look at a 2021 70° Autobot or Decepticon bucking, or an X-range.
I don't have experience with X-range as I exclusively use R-hop now, but the people who use them seem to like them, more than Maple Leaf sometimes.

Try putting in all stock parts, and switch out part by part.
One more thing that may be causing this is the FPS you're pushing the .36g at, as it seems like you should be getting at least 420 FPS with them judging by your spring.
I recommend trying to keep the ammo between 300 and 370 FPS, as it's too slow below that, and too fast above that, as it becomes unstable after 370.

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SiliconeSword

· #21 · 7 mo ago

Steel sears are stronger, but they have an awful trigger pull and bolt pull, as they are meant to run low power, and at higher power the sear pushes the piston into the top of the cylinder causing issues. If you can't justify a $50 90° trigger, sniping may not be the thing for you. Since you have started with a base gun, you will inevitably spend $500 on it at some point, so it would actually be cheaper to get something like the SSG10 that has all the upgrade parts in it for the cost of a TM VSR-10

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