Custom 10 and 15 round Mrod mag *NEW* Final Version for Sale

[Habanero69er]

Don't suppose anyone with a scoped benjamin marauder would want to check if this 15 round magazine would fit on their gun. I have a bullpup so no issues for me haha

I broke out the calipers & measured the distance between the top of the breech to the bottom of my scope. Got 0.78" with Leapers high rings.

[William]

I am thinking that the measurement needs to be taken from the bottom of the breech slot where the magazine actually sits to the bottom of the Scope, then use the height of the new 15 round clip to decide if it will fit on the Marauder! 

Anyone got the actual height of the Marauder breech (22 cal) from the point of where the bottom of the clip sits to the very top of the Breech (top of dovetail mount rail)?

Once you know that and the actual height of the 15 round Magazine then you will know if it is going to fit!

I think that is what we need to know!

William

[FamilyMan811]

I'd do 15 rounds if it fit Prod, why no. 25 extended mags?

[William]

I'd do 15 rounds if it fit Prod, why no. 25 extended mags?

scharfe,
Does not have a .25 Mrod and he would need one in order to make sure the Magazine works properly, unless he could maybe get some exact measurements on the dimensions!

Wish I still had my .25 Mrod I would send it to him so he could make some mags for it!

William

[scharfe]

What keeps the next pellet from falling into the chamber before you are ready to push the bolt in on the 15?  Just curious or crazy one.
Bob

When you turn the cover to load the magazine it winds a torsion spring. The spring puts a little pressure on the pellet that is pinned between a stop that aligns the pellet to the barrel and the geometry that holds each pellet, locking the pellet in place.

Thanks
Bob

[Habanero69er]

I am thinking that the measurement needs to be taken from the bottom of the breech slot where the magazine actually sits to the bottom of the Scope, then use the height of the new 15 round clip to decide if it will fit on the Marauder! 

Anyone got the actual height of the Marauder breech (22 cal) from the point of where the bottom of the clip sits to the very top of the Breech (top of dovetail mount rail)?

Once you know that and the actual height of the 15 round Magazine then you will know if it is going to fit!

I think that is what we need to know!

William

Okay, that measurement is 0.9785".

[amb5500c]

Bob, if/when you start selling these, we'd expect you to use and follow the rules of our "Hobbyist Classified Gate". Your work looks awesome and I wish you the best of luck with this project.
Richard

[scharfe]

Got a chance to do a full 150 round test with the first right hang magazine today,(pretty difficult for my left handed self and my bullpup) also probably put over 500 rounds through some left handers. Zero issues so I am pretty happy with it.

I really happy with with the accuracy and my goal of building a "precision" magazine may have been a success. I am no sharp shooter but I do feel that I have had more consistent shots with less stray bullets than I have with a factory mag.


One thing I found amusing is how obvious this magazine makes slightly less than perfect pellets look. Below is a picture of two of my favorites pellets, the crossman primers on the left (favorite for price) and jsb heavies on the right (favorite for accuracy) My picture doens't do the obvious difference justice in the shape of the pellet skirt.

[William]

I am thinking that the measurement needs to be taken from the bottom of the breech slot where the magazine actually sits to the bottom of the Scope, then use the height of the new 15 round clip to decide if it will fit on the Marauder! 

Anyone got the actual height of the Marauder breech (22 cal) from the point of where the bottom of the clip sits to the very top of the Breech (top of dovetail mount rail)?

Once you know that and the actual height of the 15 round Magazine then you will know if it is going to fit!

I think that is what we need to know!

William

Okay, that measurement is 0.9785".

Be a close fit I think, but it looks just from estimating some of the figures you should have room for it to fit with a little extra. (That is using High Scope Rings). I am sure some High rings are actually higher than others.

Not sure exactly about the fit but Bob would be able to figure it better than me!

So, if you have 0.78 clearance for top rail to bottom of scope and the measurement from the bottom of breech mag slot to top of rail is 0.9785 and if the magazine is about 1.88" this would be. (dont forget the mag is offset a little giving you about 0.11" extra room!

   0.9785
+0.7800
= 1.7585 This is the approx clearance you would have plus what ever the offset is that would add about 0.11" extra.
+ 0.1100
= 1.8685 total Approx. Clearance you would have. Do not take my figures to be correct, just getting an Idea of what to expect.

I do not know exactly how high the 15 round Magazine is, only Bob would know! It looks like it will work without a problem, I believe there is more clearance than what I have figured. I definitely know it will work on my BNM Breech with High Mounts.
My BNM Breech is the same measurement as the Mrod +/- .001" from the bottom of breech area where mag sits to top of Scope Rail.

Bob,
Am I close or is this wrong, it looks close to me?

William

[scharfe]

I am thinking that the measurement needs to be taken from the bottom of the breech slot where the magazine actually sits to the bottom of the Scope, then use the height of the new 15 round clip to decide if it will fit on the Marauder! 

Anyone got the actual height of the Marauder breech (22 cal) from the point of where the bottom of the clip sits to the very top of the Breech (top of dovetail mount rail)?

Once you know that and the actual height of the 15 round Magazine then you will know if it is going to fit!

I think that is what we need to know!

William

Okay, that measurement is 0.9785".

Be a close fit I think, but it looks just from estimating some of the figures you should have room for it to fit with a little extra. (That is using High Scope Rings). I am sure some High rings are actually higher than others.

Not sure exactly about the fit but Bob would be able to figure it better than me!

So, if you have 0.78 clearance for top rail to bottom of scope and the measurement from the bottom of breech mag slot to top of rail is 0.9785 and if the magazine is about 1.88" this would be. (dont forget the mag is offset a little giving you about 0.11" extra room!

   0.9785
+0.7800
= 1.7585 This is the approx clearance you would have plus what ever the offset is that would add about 0.11" extra.
+ 0.1100
= 1.8685 total Approx. Clearance you would have. Do not take my figures to be correct, just getting an Idea of what to expect.

I do not know exactly how high the 15 round Magazine is, only Bob would know! It looks like it will work without a problem, I believe there is more clearance than what I have figured. I definitely know it will work on my BNM Breech with High Mounts.
My BNM Breech is the same measurement as the Mrod +/- .001" from the bottom of breech area where mag sits to top of Scope Rail.

Bob,
Am I close or is this wrong, it looks close to me?

William

William,

I believe we are both trying to skin the same cat but with different methods. The magazine sits flush with the bottom of the breech. Our measurements should only vary by cossman's tolerances from the bottom of the breach to the top of the scope rail and measuring error. For me the distance from the bottom of the breech to the magazine are as fallows.



If your space from the bottom of the breech or top of scope rail is larger than the spaces show, it should fit. If it is not but more than the distance to the top center of the bottom breech or top of scope rail it will depend on the diameter of your scope tube above the magazine if it will fit.

[William]

Thanks Bob,
It will fit and have a little room left, just it will have to be used with High Scope Mounts. You have done a great job on the customization thats for sure.

As soon as you're ready I will be getting one! Let me know when you get setup in the Hobbyist Classified Gate. I cannot wait to give one of these a try!

Thank you,

William

[scharfe]

I decided to sell some of these in limited quantizes as "testers" please see my new post here if interested and for additional information.

http://www.gatewaytoairguns.org/GTA/index.php?topic=81532.new#new
 

Thanks
Bob

[Norm_m]

Bob is there anyway to add something to your magazines to prevent double loading ?

This is one issue with the Marauder Magazines that would / should be looked into. Looking at the way the magazines are made I cannot see anyway to do it but possibly you can find a way.

Norm

[Habanero69er]

I don't think the double pellet loading is a magazine issue. It's a rifle issue. My Rainstorm-1 doesn't allow double loading. How do you make a magazine that knows if you've already fired the previous pellet?

[YEMX]

How do you make a magazine that knows if you've already fired the previous pellet?

That's part of the reason why the Daystate mags are so fraking expensive.  It's a set up in both rifle and mag that uses air, I think, to drive a pin that prevents double feeding.  Too complicated, and more importantly, expensive IMO.  Something like this would need a whole new breech I would think.

[scharfe]

Bob is there anyway to add something to your magazines to prevent double loading ?

This is one issue with the Marauder Magazines that would / should be looked into. Looking at the way the magazines are made I cannot see anyway to do it but possibly you can find a way.

Norm

Norm,

I did a quick sketch up of a concept for a magazine that would prevent double loading. But like a couple of other people said it would be very complicated and crazy expensive to make. Probably wouldn't end up being very reliable either haha. I also think like YEMX212 said a new breech that would allow some sort of communication between the mag and breech would be necessary to get it to work properly.

[scharfe]

I still have a couple "tester" mags or anyone interested, I would like to get couple more out in the field testing if possible. If anyone is hesitant in getting one because of the need for self fitting the magazine I figured would show what would be necessary. Also "tester" may be the wrong word haha. I come from a production company that has very strict quality standards, most of which I have developed and enforce, so I may be a bit to strict with my own designs haha.

All modifications should require removing very small amounts of material. I would recommend sand paper or a small fine file. And go SLOW you can always remove more, but cant add it back. Its actually really simple.


Red Face
This face will most likely be one one that will need to be modified if it is to hard to slide into the breech. Slowly remove with sand paper on a flat surface or fine file. Go slow be patient.

Blue Faces (top and bottom faces)
Is the starting alignment for the barrel. This should not need to be modified as I believe Crossman would hold a tighter tolerance on this.

Green Faces (top and bottom)
 Are the locking nubs, they snap and lock the magazine over the barrel, if it is to hard to to snap in or out the nubs can be lightly sanded on

If done properly the magazine will lock into the breech with no movement once it has snapped in place.

[William]

Scharfe,
Thanks for the how too, My factory magazine needed this also, so I used fine sandpaper and sanded a little at a time so it would slide in and snap into place without a lot of effort. Like you mentioned do a little at a time, it doesn't take much! Also if the area that you need to sand on is flat, lay the sandpaper on a good flat surface and rub the magazine on it.

Thank you, can't wait until mine arrives, I will give a review on it here when I get it.

Thanks
William

[YEMX]

I hope I can get my grubby hands on one!!!   

[Norm_m]

Bob what you have already done with the magazine is fantastic and I also knew more than likely there was nothing that can be done to a magazine itself to prevent double loading.
I was just hoping you would find a magic wand LOL to solve the issue.

Norm