Vudoo 360 in Acc Elite Mag Latch Position Pic Request

[ZCOklahoma]

For the past 2 years, I ran my Vudoo in an XLR Envy Pro, and it ran like a sewing machine. I have shot two matches recently after putting it into an ACC Elite and have had feeding issues. on about 40% of my stages. I have a barricade stop, so it is not pressure on the mag. Can someone that has reliable feeding snap a pic for me on the position of the mag catch line? I have played with multiple settings and can't seem to dial in it where I want.

Here is where I currently sit.

 

[Kahrhart63]

I bought one thinking I would really like it! Had the same issues with the vudoo for some reason! Ran fine for a rimx. But I ended up selling it cause I prefer MPA chassis!

 

[RAVAGE88]

Try this:

Remove the magazine, place .012" (or as close as you can possibly get) of tape on top of the magazine behind the feed tower, but just within the perimeter of the top of the magazine, no overhang.

Adjust the magazine release all the way down and leave the screw loose, but with some resistance so the release doesn't move easily.

Insert magazine.

Slowly, methodically push the release up until the tape makes contact with the receiver, but you just want it to touch and stop pushing.

Note where the release is, mark it with a sharpie.

Remove magazine.

Tighten the screw on the release.

Remove tape, re-insert magazine.

Test and report back.

MB

 

[ZCOklahoma]

Try this:

Remove the magazine, place .120" (or as close as you can possibly get) of tape on top of the magazine behind the feed tower, but just within the perimeter of the top of the magazine, no overhang.

Adjust the magazine release all the way down and leave the screw loose, but with some resistance so the release doesn't move easily.

Insert magazine.

Slowly, methodically push the release up until the tape makes contact with the receiver, but you just want it to touch and stop pushing.

Note where the release is, mark it with a sharpie.

Remove magazine.

Tighten the screw on the release.

Remove tape, re-insert magazine.

Test and report back.

MB

Thanks Mike. I'll give it a shot.

 

[RAVAGE88]

Thanks Mike. I'll give it a shot.

Sorry, Dude, I edited my post above; it's .012", not .120".

MB

 

[RAVAGE88]

I set up a test using the MDT Precision DBM, which has the same mag release as your ACC Elite. Before I get into the details, I used a Foundation stock, because I know they hit their "pillar" numbers, and I torqued the action bolts to 65 in lbs.

I used .012" shim stock on top of my legacy magazine (V-22) and used the procedure I outlined above. Once adjusted to the procedure, I rested the rifle on the magazine and fed flawlessly with one simple adjustment and good information. No shaving lead, no hiccups, no fiddle-farting around, just pure functionality the way a rifle was intended to be used.

Why does this work? Because there are two key dimensions that ensure flawless feeding and magazine pressure doesn't matter. No buffers, no adjustable catch on the magazine, and I've always done it with a fixed length magazine release.

Just for reference, I attached a photo of where the MDT magazine release is set, but don't use this, use the procedure above.

MB

 

[ZCOklahoma]

I set up a test using the MDT Precision DBM, which has the same mag release as your ACC Elite. Before I get into the details, I used a Foundation stock, because I know they hit their "pillar" numbers, and I torqued the action bolts to 65 in lbs.

I used .012" shim stock on top of my legacy magazine (V-22) and used the procedure I outlined above. Once adjusted to the procedure, I rested the rifle on the magazine and fed flawlessly with one simple adjustment and good information. No shaving lead, no hiccups, no fiddle-farting around, just pure functionality the way a rifle was intended to be used.

Why does this work? Because there are two key dimensions that ensure flawless feeding and magazine pressure doesn't matter. No buffers, no adjustable catch on the magazine, and I've always done it with a fixed length magazine release.

Just for reference, I attached a photo of where the MDT magazine release is set, but don't use this, use the procedure above.

MB

View attachment 8731394
View attachment 8731396

I will give this a shot once I get to mess with the rifle tomorrow. You have gone above and beyond to assist and I 100% appreciate it.

 

[RAVAGE88]

I will give this a shot once I get to mess with the rifle tomorrow. You have gone above and beyond to assist and I 100% appreciate it.

No worries, this is info I've been planning to present as part of a video series for proper rifle setup, but your post was very timely, so I'm throwing it into your thread. I'll still cover it via video.



MB

 

[426nut]

Try this:

Remove the magazine, place .012" (or as close as you can possibly get) of tape on top of the magazine behind the feed tower, but just within the perimeter of the top of the magazine, no overhang.

Adjust the magazine release all the way down and leave the screw loose, but with some resistance so the release doesn't move easily.

Insert magazine.

Slowly, methodically push the release up until the tape makes contact with the receiver, but you just want it to touch and stop pushing.

Note where the release is, mark it with a sharpie.

Remove magazine.

Tighten the screw on the release.

Remove tape, re-insert magazine.

Test and report back.

MB

Sticky time!

 

[6.5SH]

Try this:

Remove the magazine, place .012" (or as close as you can possibly get) of tape on top of the magazine behind the feed tower, but just within the perimeter of the top of the magazine, no overhang.

Adjust the magazine release all the way down and leave the screw loose, but with some resistance so the release doesn't move easily.

Insert magazine.

Slowly, methodically push the release up until the tape makes contact with the receiver, but you just want it to touch and stop pushing.

Note where the release is, mark it with a sharpie.

Remove magazine.

Tighten the screw on the release.

Remove tape, re-insert magazine.

Test and report back.

MB

Silly question, but would this method work for other .22 LR AICS pattern rifles such as Bergara?

 

[RAVAGE88]

Silly question, but would this method work for other .22 LR AICS pattern rifles such as Bergara?

Not silly at all, as I've been thinking about qualifying these other magazines because I knew I'd get this question. At the moment, I can speak to "ifs," and it will give you a few things to dig into.

"IF" the Bergara magazine is properly constrained to the AICS form factor, the method will work. This is why I've been speaking to the departure from foundational information over the last few weeks and how doing so is at the center of the creation of feed and cycle issues. But I don't hear of lots of feed/cycle issues with the Bergara stuff.

So, if the mag catch on the Bergara magazine is at least a little bit close to where the mag catch is located on an AICS magazine and if the top round to be fed from the Bergara magazine is positioned correctly referencing the centerline of the receiver, this method will work. I don't know for sure because I've not measured the Bergara. But at some point, when I have the available time, I'll create CAD models of the Bergara and compare them to my CAD model of the AICS.

I've done this with the RimX magazine.

MB

 

[RAVAGE88]

To be able to work from and supply complete and accurate info, I have conducted a dimensional conformance study and all-in-all, MDT did a good job with their Precision DBM. One important point to note is the reference line on their mag release doesn't represent the length of the AICS magazine release from pivot point to engagement surface.

This explains my pic above of why the reference line on their mag release is not aligned when the round-to-be-fed is positioned correctly reference the receiver centerline. So, anyone adjusting an MDT mag release (or anyone's mag release) should start with the mag release adjusted lower than the alignment reference on the mag release (in this situation, it would be best if they left the line off the mag release).

The reason my mag release is fixed is because it conforms to the length of the AICS mag release from pivot point to engagement surface.

The two DBMs in the model are my DDG Standard M5 and the MDT Precision DBM.

MB