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Posted: 2/16/2013 2:45:11 PM EDT
| So, I picked up a Rossi M92 in .357 Magnum, and I'm thing about using it for hunting. How strong is the action? Can it handle the hot hunting loads or should I stick to lighter loads? |
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So, I picked up a Rossi M92 in .357 Magnum, and I'm thing about using it for hunting. How strong is the action? Can it handle the hot hunting loads or should I stick to lighter loads? No need to shoot light loads. Any published, below maximum load, worked up to in increments, will be safe in your rifle. The Model 1892 is a very strong action, but having said that, a fool can blow up any rifle, however if you use your head you will be fine. |
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If you consider that the exact same action is used for 44 mag, 45 Colt and 30-30, the 357 is the puny bunny of the bunch. The '92 action is too short for .30-30. 'tis true. But Rossi makes their 1892 clone in .454 Casull. I think a hot .357 (published maximum, I mean  ) would be fine, as long as one works up to it properly.
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Rossi chambers the Model 92 in .454 Casull, and the SAAMI specs on that are impressive with a maximum average pressure spec of 50,000 CUP (it's apples and oranges but that's in the 55,000 psi ball park). In comparison the .357 Magnum runs at a maximum average pressure of 35,000 psi.
Of equal importance, the case head on the.357 Magnum only has an area of .152 square inches, while the .454 Casull has an area of .206 square inches. When you put the two together in terms of force against the bolt face that's roughly speaking 3,955 pounds for the .357 Magnum versus 9,845 pounds for the .454 Casull. The .44 Mag has .165 square inches and 36,000 psi for 5,940 pounds, a .45 Colt running at .44 Mag pressures has .181 square inches and 6,516 pounds, and (strictly for comparison purposes) a .30-30 has an area of .139 and a pressure of 42,000 psi for 5,838 pounds. So the .357 Magnum is by far the least stressful round used in the Model 92. |
| Rissi's 92 is a very strong action. I have been literally abusing a couple of them for many years and they still run like champs. I recently bought a new stainless with a 20 inch barrel and plan on doing the same with it. Dont really care for the longer barrel than my other 2 but I'll get used to it I guess. I have never hesitated to run any 357 load through these guns and they just love it. I have a 44 mag also but it hardly ever gets used anymore simply because I have never done anything with it that I couldnt do with the 357's and given that I also carry a 6 inch 686 while wondering through the woods or whatever, love the fact that I can run the same ammo in both. Now I do not reload and have never used anyones reloads but I have ran the strongest 357 magnum rounds I can find locally or ordered online and the 92's just seem to want more. |
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Rossi chambers the Model 92 in .454 Casull, and the SAAMI specs on that are impressive with a maximum average pressure spec of 50,000 CUP (it's apples and oranges but that's in the 55,000 psi ball park). In comparison the .357 Magnum runs at a maximum average pressure of 35,000 psi. Of equal importance, the case head on the.357 Magnum only has an area of .152 square inches, while the .454 Casull has an area of .206 square inches. When you put the two together in terms of force against the bolt face that's roughly speaking 3,955 pounds for the .357 Magnum versus 9,845 pounds for the .454 Casull. The .44 Mag has .165 square inches and 36,000 psi for 5,940 pounds, a .45 Colt running at .44 Mag pressures has .181 square inches and 6,516 pounds, and (strictly for comparison purposes) a .30-30 has an area of .139 and a pressure of 42,000 psi for 5,838 pounds. So the .357 Magnum is by far the least stressful round used in the Model 92. I realize that this is nitpicking, but the parent cartridge for the .454 is the .45 Colt. Therefore they both have the same base diameter (.480) and the same cross section. (.181) |
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Actually no, it's not nit picking, it's just good proof reading.
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Rossi chambers the Model 92 in .454 Casull, and the SAAMI specs on that are impressive with a maximum average pressure spec of 50,000 CUP (it's apples and oranges but that's in the 55,000 psi ball park). In comparison the .357 Magnum runs at a maximum average pressure of 35,000 psi. Of equal importance, the case head on the.357 Magnum only has an area of .152 square inches, while the .454 Casull has an area of .206 square inches. When you put the two together in terms of force against the bolt face that's roughly speaking 3,955 pounds for the .357 Magnum versus 9,845 pounds for the .454 Casull. The .44 Mag has .165 square inches and 36,000 psi for 5,940 pounds, a .45 Colt running at .44 Mag pressures has .181 square inches and 6,516 pounds, and (strictly for comparison purposes) a .30-30 has an area of .139 and a pressure of 42,000 psi for 5,838 pounds. So the .357 Magnum is by far the least stressful round used in the Model 92. I realize that this is nitpicking, but the parent cartridge for the .454 is the .45 Colt. Therefore they both have the same base diameter (.480) and the same cross section. (.181) Also the .45 Colt and .454 do not have the same base diameter. The .454 has an area of .478 at the base while the .45 Colt is .480. But otherwise, yes, there's an error in the text. On the first run through, I grabbed the rim diameter not the base diameter by mistake, then corrected it in the calculations but missed changing the area in the text. The calculations reflect that with an area of .179, not .206, the .454 would have 9,845 pounds of force pressing against the bolt face. Actual nit picking would be pointing out the degree to which the adhesion of the case to the chamber reduces the thrust against the base, that might narrow the gas between the .357 and .454 a bit - but not much. |
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