A note of caution...

[dpsk]

...regarding the HB Industries P-07 to P-10C magazine conversion.  I had 4 of my P-07 mags modified by HB with this conversion.  While the machine work and the timeliness of the conversion was fantastic, the newly cut notch in the converted P-07 mags is slightly wider than the factory cut notch in the P-10C mags.  As such, on all 4 of my converted magazines, the tips of rounds (both FMJ and JHP) tend to hang up (catch) a bit while LOADING the magazine when they pass by the newly cut notch.  There is no hang up when loading factory P-10C mags.  I shot both FMJ and JHP rounds through both my P-07 and my P-10C with the modified mags, and had NO malfunctions at all.  I thoroughly cleaned and inspected the modified magazines after the range session and couldn't find any defects (burrs) where HB Industries had cut the notch in the P-07 mags.  I believe there's something about the slightly wider notch on the modified magazines that may cause the rounds to catch when loading.  Not sure why, but I wanted to bring it to the attention of the forum. 

Note that I am not criticizing HB Industries about the quality of their work, nor their quick turn around with this modification.  Also, I want to emphasize that all of the rounds fed perfectly fine while shooting both pistols.

[texasmojo]

Good observation. I'm actually in the process of notching the front of some beretta 35rd mags so they can work with my new arex rex zero.
Disassemble your mags and try to feel the inside for any metal burrs in the notch area. I deburred the notch areas with a small hand file after I cut the notches. Two mags down, three to go.

[dpsk]

Good observation. I'm actually in the process of notching the front of some beretta 35rd mags so they can work with my new arex rex zero.
Disassemble your mags and try to feel the inside for any metal burrs in the notch area. I deburred the notch areas with a small hand file after I cut the notches. Two mags down, three to go.

I did - no burrs.  The quality of the work by HB is fantastic (looks factory), but I think there's something about the wider notch and the dynamic of loading rounds that causes them to catch.  My solution is to just be a little more careful when loading those magazines.  If I find them to be unreliable when feeding, I'll likely just use my P-10C magazines for critical duty in my P-07 and relegate the modified P-07 mags for range use.

[texasmojo]

Have you contacted them back to let them know about the wider than normal cut? These mags are very expensive and they can at least go back to the drawing board to not do this to future mag cuts.

[Garmanarnar]

Have you contacted them back to let them know about the wider than normal cut? These mags are very expensive and they can at least go back to the drawing board to not do this to future mag cuts.

Do this and let us know what they say. If their modifications are ruining your magazines they should reimburse you at the very least.

[dpsk]

Called and left a message.  I'll report what the response was.

[dpsk]

Quick follow up.
Received a call from HB CS.  Absolutely excellent CS!  They emailed a shipping label so I can send them my magazines back. They'll inspect and determine what the problem might be.  If they can't fix my magazines, they offered to send me 4 replacement magazines.  I'll ship them out to HB tomorrow and let the forum know what the final outcome is.
Cheers.

[texasmojo]

Glad to see them take care of you.

[s0nspark]

Quick follow up.
Received a call from HB CS.  Absolutely excellent CS!  They emailed a shipping label so I can send them my magazines back. They'll inspect and determine what the problem might be.  If they can't fix my magazines, they offered to send me 4 replacement magazines.  I'll ship them out to HB tomorrow and let the forum know what the final outcome is.

Awesome news - keep us posted!

[HBi]

A little late to this party (we are active on the forums but did not see this until just now)... As @dpsk mentioned the magazines are being sent back to us and we will determine the root cause of any issues. To answer a couple questions posted earlier in this thread:

The ambi catch window in the mag body IS wider on our converted magazines, by about 0.063". This is because we machine the window into the magazine body using a 1/16" diameter endmill. The factory magazines are punched flat, then formed and welded. Since we are starting with formed magazine bodies, we do not really have the option of punching square features in the sheetmetal, so we must machine the window using conventional milling methods, going 0.032" wide on each side to account for the radius of the 1/16" endmill. A one of the pictures below will show this.

It is important to notice in the first picture below the tips of bullets/projectiles are actually visible within the ambi catch window of the factory P10 mag (pictured on the left). We initially did these conversions here for test guns/magazines while developing other P10 parts in 2017 (before dedicated P10 magazines were available...). Later it expanded to local customers, then by demand, out into the world of the internet... We have been running most of our "converted" mags long and hard and have not experienced anything similar to the @dpsk loading troubles. We are anxious to get those magazines back and see what improvements we can make.

[Raining_Brass]

Just curious, but why not just rough it with a 1/16" end mill and simply finish the corners with something smaller? Say .047"? Then the windows wouldn't have to be quite as wide.

[HBi]

Just curious, but why not just rough it with a 1/16" end mill and simply finish the corners with something smaller? Say .047"? Then the windows wouldn't have to be quite as wide.

@primarymachine that is a very good idea. We are anxious to see the @dpsk magazines again, will get to the bottom of that and look at adding a 3/64 finish pass if needed. You guys make awesome parts, thanks for the feedback.

[Raining_Brass]

Just curious, but why not just rough it with a 1/16" end mill and simply finish the corners with something smaller? Say .047"? Then the windows wouldn't have to be quite as wide.

@primarymachine that is a very good idea. We are anxious to see the @dpsk magazines again, will get to the bottom of that and look at adding a 3/64 finish pass if needed. You guys make awesome parts, thanks for the feedback.

Sometimes you can get stuck in the daily grind and the simple solutions don't jump out.

Keep up the awesome work! I think this is an awesome service you guys are providing.

[dpsk]

A little late to this party (we are active on the forums but did not see this until just now)... As @dpsk mentioned the magazines are being sent back to us and we will determine the root cause of any issues. To answer a couple questions posted earlier in this thread:

The ambi catch window in the mag body IS wider on our converted magazines, by about 0.063". This is because we machine the window into the magazine body using a 1/16" diameter endmill. The factory magazines are punched flat, then formed and welded. Since we are starting with formed magazine bodies, we do not really have the option of punching square features in the sheetmetal, so we must machine the window using conventional milling methods, going 0.032" wide on each side to account for the radius of the 1/16" endmill. A one of the pictures below will show this.

It is important to notice in the first picture below the tips of bullets/projectiles are actually visible within the ambi catch window of the factory P10 mag (pictured on the left). We initially did these conversions here for test guns/magazines while developing other P10 parts in 2017 (before dedicated P10 magazines were available...). Later it expanded to local customers, then by demand, out into the world of the internet... We have been running most of our "converted" mags long and hard and have not experienced anything similar to the @dpsk loading troubles. We are anxious to get those magazines back and see what improvements we can make.

Hey,
Thanks for responding here.  I had a nice conversation with Phil yesterday about the problem.  I mailed the mags back to HB this morning.  I added small bits of masking tape to the two magazines that I loaded up while on the phone with Phil (showing a bit of copper shaved off the tips of the FMJ rounds I was using).  The other two mags are clean, as I had cleaned them off and detail stripped them after shooting the other day (to see if I could feel any burrs on the inside of the cut).
Thanks again!
   

[armoredman]

I do like it when manufacturers can talk directly to customers and potential customers.