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Old December 17, 2018, 07:53 PM   #1
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Browning Hi-Power conversion

It is possible (and safe) to convert a Hi-Power in 9mm to a 357 Sig?
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Old December 17, 2018, 10:18 PM   #2
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I love my BHP, but it probably didn't love the hot-loaded ammo I've fed thru it. (135 grain hard cast bullets with an embarrassing amount of Bullseye that I won't publish. It would probably be a great load for an Uzi) I probably just got lucky because I only shot a hundred or so of those. The chamber can handle it; I'm not so sure about the rest of the action.

I think you'll prematurely wear out the locking lugs or something with anything hotter than normal 9mm and occasional +P 9mm. .40S&W Hi-Powers don't have a great reputation.

Now we'll see what the experts say
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Old December 17, 2018, 10:21 PM   #3
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Find a Hi-power in 40s&w for that conversion. Simple barrel swap, if you can find one.
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Old December 18, 2018, 12:39 AM   #4
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357 Sig = 40K psi vs 40 S&W = 35k. Guess I don't see the point.
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Old December 18, 2018, 02:47 AM   #5
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.40 HP's

I'm not completely sure of this, but I think BHP"s from advent of those chambered in .40 forward, had slightly beefier frames to accommodate the pressures generated by the .40 S&W v. the milder 9mm

Seems like I have read BHP fans bemoaning the change as it spoiled the feel of the classic BHP. I don't know if an additional 5000 units of pressure generaated by the .357SIG (if indeed those numbers are right , would threaten the "new" BHP frame or not.

It is pretty common to see various pistols with barrel swaps between that family of cartridges.........I dunno
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Old December 18, 2018, 05:25 AM   #6
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The failure i've seen has been the barrel, not the frame.
+P 9mm resulted in the "recoil lug" on the bottom of the barrel to crack and cause a stoppage.
Resulting in new barrel and no more +P ammo.
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Old December 18, 2018, 11:02 AM   #7
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These guys make barrels. 6 to 8 weeks wait. (Rumour has it Barsto quit making 'em due to a lot of lugs being sheared off. Doesn't make sense to me as nobody would make 'em if it didn't work.). Requires fitting, but so does any barrel. Probably needs a different spring too.
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