4013 —> 10mm “Conversion” Experts? ...

[rosewood]

I actually used a dremel 1/8" burr bit in my HF bench top mill. If I didn't have the mill, I would have used the dremel. Bought mill to cut sight dovetails and 1911 frame for ramp barrel. Still trying to get my money out of the mill.....
2 Speed Benchtop Mill/Drill Machine


Rosewood

 

[BLUEDOT37]

What milling machine are you guys using to mod the dimples and white follows? Link maybe to a source?

I never found it necessary to mill/drill out the dimples/crimp indentations that hold the spacer. On mine a follower would freely slide up & down the empty magazine body with nothing done to them after removing the spacer.

Running a flat mill file along the inside corner of the magazine will minimize any obstructions found & give you piece of mind though.

All of my spacers easily popped out with a flat tip screwdriver.

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The magazine's vertical indentations, for holding the top round in the 4013 mags, is problematic & need to be minimized for the 10mm Auto round to feed smoothly out of the mag as they contact the shell's body, rather than at the extractor groove once the spacer has been removed.

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I have details about the white 10mm's follower modification in my thread too.

Thread: Genesis: 4013 to 1013 to 1016

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[Frank Black]

I have a shopfox M1116 that I bought in Amazon (paid it over 18 months)...but I use it for my business...

a cheaper solution is to send it to a gunsmith...or a machinist...

in these type of conversions...BMCM is "the man"...

You're right. Again, the simplest way to get to a result that works.

 

[Frank Black]

I never found it necessary to mill/drill out the dimples/crimp indentations that hold the spacer. On mine a follower would freely slide up & down the empty magazine body with nothing done to them after removing the spacer.

Running a flat mill file along the inside corner of the magazine will minimize any obstructions found & give you piece of mind though.

All of my spacers easily popped out with a flat tip screwdriver.

.

The magazine's vertical indentations, for holding the top round in the 4013 mags, is problematic & need to be minimized for the 10mm Auto round to feed smoothly out of the mag as they contact the shell's body, rather than at the extractor groove once the spacer has been removed.

.

I have details about the white 10mm's follower modification in my thread too.

Thread: Genesis: 4013 to 1013 to 1016

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Thanks very much for the pics, info, and the link.

 

[rosewood]

The other thing that is important is to trim the white followers...the instructions on how to do this is also in BMCM's post...this is not hard to do with a milling machine...not sure how to do it properly with hand files...(IF the white followers are not trimmed to fit in the narrow lips of the 4013 mag, then capacity could be reduced by 1 round).

The first one I trimmed with a dremel, it really isn't an exact science, the latter 2, I used a file and just eyeballed it to match the red follower. The only reason this is needed is so the follower comes up high enough to reliably engage the last round slide lock open.

Unless I am thinking wrong, I don't see how beveling the top of the follower would have any bearing on the magazine capacity. When there is 1 round in the mag, it isn't all the way up anyway, beveling it just allows the follower to come up all the way. With 1 round or more, that bevel has 0 effect on capacity or follower travel or spacing.

I am thinking the issue may have been a new spring designed for the 9 round mag was used making it tight.

Rosewood

 

[rosewood]

I never found it necessary to mill/drill out the dimples/crimp indentations that hold the spacer. On mine a follower would freely slide up & down the empty magazine body with nothing done to them after removing the spacer.

Running a flat mill file along the inside corner of the magazine will minimize any obstructions found & give you piece of mind though.

I considered leaving the dimples, but did see some slight engagement with the follower. I did notice the followers are rounded on the corners and not squared off where they would catch the dimples. I went ahead and cut mine out to make sure there was no possibly of dragging.

Other thing, those cuts look kind of cool and are a sure way to identify them as being modified 10mm mags.

Rosewood

 

[rosewood]

The magazine's vertical indentations, for holding the top round in the 4013 mags, is problematic & need to be minimized for the 10mm Auto round to feed smoothly out of the mag as they contact the shell's body, rather than at the extractor groove once the spacer has been removed.

This was my experience as well. The 10mm rounds were catching on the indentation. I did what I saw on one of the other post, found a piece of metal just wide enough to fit in mag, inserted it between the indentations and clamped in vise. Worked out quite well. I think I used a hex shaped punch handle

Rosewood