H&R Model 155 .44 REM MAG Milled to .444 Marlin - Page 2 - Graybeard Outdoors
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post #11 of 14 (permalink) Old 04-28-2019, 07:21 PM
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Originally Posted by ulav8r View Post
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.
44 Mag has a smaller case head, .457" vs .470" for the 444, relative ball park breech thrust comparisonl shows the 444 to be substantially higher, 5905psi for the 44mag vs 7287psi for the 444, not what I'd consider friendly to a cast iron frame.


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post #12 of 14 (permalink) Old 04-29-2019, 08:16 AM
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Originally Posted by dinny View Post
I can't wait to see how they make the 444M feed and extract in my 1894.

Thanks, Dinny
No problem, they are going to rechamber your Ruger.


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post #13 of 14 (permalink) Old 05-01-2019, 03:59 PM
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If you reload, it's not a problem. Reload your cartridges to .44 magnum level- the larger capacity case will lessen pressure as well. If it's not restamped ".444 Marlin"- then stamp it "10.5x 53R" or some such to make folks stop and think. If you don't reload, you're driving on 4 bald tires with loose lug nuts.

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post #14 of 14 (permalink) Old 05-01-2019, 06:11 PM
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I'd guess this comes up every year or two. All my Handis are on SB2 frames. I don't care if I only shoot .38s or .32-20s. All the barrels have welded under lugs. All have been remarked with their new caliber. (Thanks Dinny!!) .32-20, .357 Maximum. .30-40 Krag, .356/.358, .445 Super Mag., etc. They're all safe with standard loads for those calibers, and I don't have to worry if my grandkid is gonna blow his head off. Amen. (Again). It's so cheap and simple, I can't believe the discussion continues.


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The growing Handi/Sportster/Pardner/Topper Family: .22 WMR, .22-250. 223, Two Superlight 7mm-08s and one Superlight .243, standard .243, .30-30, 16.5 inch .30-40, .308, 32-20, 18 inch .356/.358 Win., Two 16.5 inch .357 Max., 18 inch 38-55. 16.5 inch .445 Super Mag., .45LC, 16.5 and 22 inch .45-70s, .50 Huntsman SS, .410, 20 ga., 12 ga., 20 ga. Pardner Pump, Versa-Pack .410 - .22
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