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Bob Long BLAST - Bob Long Action Sports Technologies

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Old 11-11-2016, 10:43 PM   #1 (permalink)
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Hollow Point Bolt for MVP

Anyone try one? From what I've seen, Vintage may have a bit of a sketchy rep.

TJD also has a cheap bolt out there, just wondering if it offers any benefit.

I'm thrilled with my MVP, just more curious than anything.
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Old 11-12-2016, 10:22 PM   #2 (permalink)
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Stick to stock. TJD's bolt did an awesome thing for the older MVP's that had a breech oring. Not so with the new ones.

Put a fart-free oring on the blast guide and just play.

PS: hollow point might be too young of a product to have reputable analysis yet.

Last edited by Super69ur; 11-12-2016 at 10:25 PM.
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Old 11-13-2016, 04:17 PM   #3 (permalink)
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Originally Posted by Super69ur View Post
Stick to stock. TJD's bolt did an awesome thing for the older MVP's that had a breech oring. Not so with the new ones.

Put a fart-free oring on the blast guide and just play.

PS: hollow point might be too young of a product to have reputable analysis yet.
Will do, already did the o-ring fix and am loving it.
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Old 03-30-2017, 02:46 PM   #4 (permalink)
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I know this thread is a few months old now but, google isn't helping. What size oring is needed to correctly mod the blast guide? Also while I'm reviving this thread, have either of you changed your main springs up to something other than one of the three that came from the factory?
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Old 04-14-2017, 02:04 PM   #5 (permalink)
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Haven't been on here for a few weeks, sorry about the delay.

Use a Buna N-70 N1.50x003 (1.5mm x 3mm) on the blast stem instead of the stock one.
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Old 04-15-2017, 12:52 PM   #6 (permalink)
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Haven't been on here for a few weeks, sorry about the delay.

Use a Buna N-70 N1.50x003 (1.5mm x 3mm) on the blast stem instead of the stock one.
I tried that last weekend. The sound signature was still very much the same. Ive heard people use an 006 ring. I guess I'll give that a shot next.
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Old 06-14-2017, 01:17 AM   #7 (permalink)
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I just bought a new MVP from field one and I was curious if they still have this farting issue? Should I or should I not buy the sledge hammer from vintage paintball? I know the gun has "custom milling" from vintage paintball- so maybe it's already installed?
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Old 06-14-2017, 06:48 AM   #8 (permalink)
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I just bought a new MVP from field one and I was curious if they still have this farting issue? Should I or should I not buy the sledge hammer from vintage paintball? I know the gun has "custom milling" from vintage paintball- so maybe it's already installed?
If it's one of the new MVP's with the updated sear (fixes the cocking point), it'll be fart free in stock form. You'll need to run the heavy hammer to get velocity.

https://m.youtube.com/watch?v=8F3RbcSMcMM

That's with stock hammer and updated sear. If it has the V2 hammer, check your AT, they cause an issue in most MVPs.

There are a few other options, lighter blast guide spring (lets you use a lighter hammer spring) works well with the original sear. Ok results with the updated. There is a replacement core that goes into the stock hammer being worked on that works very well.

https://m.youtube.com/watch?v=CwJxcMPu3bM

That's original sear, light blast guide spring, heavy core.
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Old 06-15-2017, 01:13 PM   #9 (permalink)
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I have a newer one and it farts pretty badly. I think it's just inherent with the design of the valve. Although there are ways to make the gun quieter, I believe it will never be equal to that of a perfect pump Cocker. I don't find that this is an "issue". Just an inherent property of the gun design itself. I love the thing, regardless of how loud it is.

I will continue to fiddle with it to try to find the best way to utilize it.
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Old 06-16-2017, 10:45 PM   #10 (permalink)
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I just took mine onto the field yesterday and... no farting. I guessed they fixed this issue with the most recent models?
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