H&R Model 155 .44 REM MAG Milled to .444 Marlin - Graybeard Outdoors
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post #1 of 14 (permalink) Old 04-24-2019, 01:45 PM Thread Starter
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Default H&R Model 155 .44 REM MAG Milled to .444 Marlin

Hey there I’m new to the forums and say that you all have a wealth of information on these rifles.

I recently picked up a H&R 155 that has a .44 Mag barrel but it’s now chambered in .444 Marlin, I’ve shot about 100 rounds in the past few months and haven’t had any issues but I know that these receivers aren’t built for rifle rounds. I just wanted to make sure you all didn’t think there should be any issues if I continue to shoot .444 out of it on a regular basis.
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post #2 of 14 (permalink) Old 04-24-2019, 02:09 PM
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You've been lucky.


Here's an SB2 frame for sale ..... https://www.go2gbo.com/forums/118-h-...amo-stock.html
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post #3 of 14 (permalink) Old 04-24-2019, 05:20 PM
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I wouldn't recommend it, you're working with a cast iron frame and early M155s had soldered underlugs, for comparison of known H&R Inc factory rifle chamberings the 45-70 @ 28kpsi has a relative ball park breech thrust of 5608psi compared to 7287psi for the 444, 30-30 is 5819psi. As 45/70fan suggested, a heat treated, steel alloy SB2 frame is recommended, pretty cheap insurance to avoid injury if the underlug is welded, the next shot could be the one that causes a big problem as it is, not worth the risk IMO.

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post #4 of 14 (permalink) Old 04-25-2019, 08:39 AM
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You should change your screen name to Lucky and then go buy a Powerball ticket.

I'd enjoy ready about the process of milling your chamber.

Thanks, Dinny

I reload and shoot 348 Win, 358 Win, 6.5 Creedmoor, 6.5 Grendel, 30-06 Springfield, 300 BLK, 44 Mag, 357 Maximum, 9mm, 45 ACP, 45 Colt, 225 Win and 35 Rem
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post #5 of 14 (permalink) Old 04-27-2019, 11:56 AM
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Rimbo,

Manny & Red can mill you a 444 chamber. Manny justs chucks a 7/16" rat tail file into the mill and Red hangs on to the 44 mag barrel with a pair of channel locks!

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MINE: 44 Bodeen Belted Magnum PI (Profino Improved), 44 Bodeen Rimmed, 45 Cal Smokeless MZ, 50cal 26" SS Sidekick, 50 cal 26" Huntsman, Tracker II 20 gashorty, 12ga Tracker II shorty WITHOUT scope, 10 gaPardner Smoothbore slug gun, 10ga Pardner Turkey & 24ga Profino Custom rifled slug gun.

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post #6 of 14 (permalink) Old 04-27-2019, 03:33 PM
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post #7 of 14 (permalink) Old 04-27-2019, 08:42 PM
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BB,
That must be a sight to see!

Thanks, Dinny

I reload and shoot 348 Win, 358 Win, 6.5 Creedmoor, 6.5 Grendel, 30-06 Springfield, 300 BLK, 44 Mag, 357 Maximum, 9mm, 45 ACP, 45 Colt, 225 Win and 35 Rem
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post #8 of 14 (permalink) Old 04-28-2019, 07:55 AM
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Rimbo,

I know you have a 44 mag, let me see if Profino is doing house calls.

BB

Why be difficult, when with a little extra effort you can be impossible?

MINE: 44 Bodeen Belted Magnum PI (Profino Improved), 44 Bodeen Rimmed, 45 Cal Smokeless MZ, 50cal 26" SS Sidekick, 50 cal 26" Huntsman, Tracker II 20 gashorty, 12ga Tracker II shorty WITHOUT scope, 10 gaPardner Smoothbore slug gun, 10ga Pardner Turkey & 24ga Profino Custom rifled slug gun.

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post #9 of 14 (permalink) Old 04-28-2019, 11:19 AM
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Quote:
Originally Posted by bikerbeans View Post
Rimbo,
I know you have a 44 mag, let me see if Profino is doing house calls.
BB
I can't wait to see how they make the 444M feed and extract in my 1894.

Thanks, Dinny

I reload and shoot 348 Win, 358 Win, 6.5 Creedmoor, 6.5 Grendel, 30-06 Springfield, 300 BLK, 44 Mag, 357 Maximum, 9mm, 45 ACP, 45 Colt, 225 Win and 35 Rem
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post #10 of 14 (permalink) Old 04-28-2019, 07:02 PM
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According to http://www.lasc.us/SAAMIMaxPressure.htm, the 44 Magnum is 36K psi and the 444 is 42K psi. 17% higher pressure is not quite a bomb, but it cuts into the safety factor severely. I would want to be at least 100 yards behind anyone shooting it on a cas iron frame.

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From: H S Truman
Political Correctness is a doctrine, recently fostered by a delusional , illogical minority and promoted by a sick mainstream media, which holds forth the proposition that it is entirely possible to pick up a piece of cr*p by the clean end!

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