Rechamber a Rossi 92 in 357 Mag to 357 Maximum - Page 1

[ARCHIVED THREAD] - Rechamber a Rossi 92 in 357 Mag to 357 Maximum

Posted: 4/19/2017 4:34:13 PM EDT

Iowa just approved straight walled cartridges for deer hunting. i have a Rossi 92 in 357 Mag, which is legal but it seems to me on the low end of practical. Has anyone ever rechambered a 92 into 357 Maximum? I suspect the case length is too long but I've not done any research into it.

Posted: 4/19/2017 5:12:55 PM EDT

[#1]

Don't know if it would work but you might be better off getting yourself a Mod.94 in .375 Winchester (modern version of the older 38-55). I would be concerned about possible timing issues with the longer case, and whether or not the 92 could handle the operating pressures. 357 mag = 35,000psi/357 max = 48,000psi according to wikipedia

Posted: 4/19/2017 5:46:22 PM EDT

[#2]

Quote History

Quoted:
Don't know if it would work but you might be better off getting yourself a Mod.94 in .375 Winchester (modern version of the older 38-55). I would be concerned about possible timing issues with the longer case, and whether or not the 92 could handle the operating pressures. 357 mag = 35,000psi/357 max = 48,000psi according to wikipedia

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While the longer length of 357 Maximum would make the conversion difficult if not impossible, the added case pressure wouldn't be a worry. The Rossi is also chambered in 454 Casul and that's a 60,000psi rd so a 'mere' 48,000psi wouldn't be an issue.

Posted: 4/19/2017 8:07:40 PM EDT

[#3]

Not sure about the strength issue but I would think getting the longer cartridge to feed from the tube to the chamber could be dificult or impossible .You might end up limiting yourself to short stubby bullets that would be lighter than optimal. Trading your Rossi for a 44mag , 45 Colt or 454 Casual ( are they legal in your state?) would likely be cheaper than trying a conversion

With proper handloads with correct powders to make use of your carbine length barrel the 357 isn't a horrible
cartridge if it is legal where you intend to hunt

Posted: 4/19/2017 10:13:46 PM EDT

[#4]

Quote History

Quoted:
While the longer length of 357 Maximum would make the conversion difficult if not impossible, the added case pressure wouldn't be a worry. The Rossi is also chambered in 454 Casul and that's a 60,000psi rd so a 'mere' 48,000psi wouldn't be an issue.

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My bad, I have forgotten that they did in fact chamber the Rossi 92 in 454 Casull. (Re)learn something new every day.

Posted: 4/19/2017 10:28:15 PM EDT

[#5]

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Quoted:

My bad, I have forgotten that they did in fact chamber the Rossi 92 in 454 Casull. (Re)learn something new every day.

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The 454 Casual version is a larger, slightly longer, stronger frame than the 357/44/45Colt version.

Posted: 4/19/2017 10:29:01 PM EDT

[#6]

I had an H&R HandiRifle in ,357 Max in the 80s. Man l loved that thing.

But I'd drop whatever coin Rossi wanted to get a 92 in the Max.

Posted: 4/20/2017 8:13:12 PM EDT

[#7]

It is just a case length stretch.

Before you cut metal (re-chamber) into an odd-ball cartridge, have you ever tried a 180 or 200 gr bullet from a 357 case. I've done this in a revolver. There's nothing under-powered about it. From a rifle, it would be even better.

Posted: 4/21/2017 11:15:32 AM EDT

[#8]

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Quoted:
It is just a case length stretch.

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Not even close. The issue is the feeding. The '92, like most all other leverguns of that era, are case length sensitive due to their feeding method. There are action length issues, carrier issues, and case stop issues just to start.

Posted: 4/21/2017 11:25:45 AM EDT

[#9]

Quote History

Quoted:
I had an H&R HandiRifle in ,357 Max in the 80s. Man l loved that thing.

But I'd drop whatever coin Rossi wanted to get a 92 in the Max.

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I agree. A Rossi '92 in 357 Maximum would be super.

Posted: 4/22/2017 1:20:55 AM EDT

[#10]

Quote History

Quoted:
Not even close. The issue is the feeding. The '92, like most all other leverguns of that era, are case length sensitive due to their feeding method. There are action length issues, carrier issues, and case stop issues just to start.

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I was referring to the cartridge, not the rifle. The case profile does not really change, it's just longer.

The longer your list of rifle issues gets, the more certain I am he should not do the re-chambering.

Posted: 5/4/2017 2:59:15 PM EDT

[#11]

I would also look for a .454 Casull. I saw a 16" stainless model last year at the LGS but passed and have regretted it ever since .

Posted: 5/11/2017 11:58:30 PM EDT

[#12]

The 357 mag has take a ton of deer here in NY out of lever guns and hand guns. As some one stated your going to be the right round. My friend load his own and dam they are hot he can punch a half dollar size group at 75yds. He took a black bear two years ago with it one shoot the bear took of and drop die 100 or so yards from where it was shoot.

Posted: 5/12/2017 10:33:48 PM EDT

[#13]

Quote History

Quoted:
While the longer length of 357 Maximum would make the conversion difficult if not impossible, the added case pressure wouldn't be a worry. The Rossi is also chambered in 454 Casul and that's a 60,000psi rd so a 'mere' 48,000psi wouldn't be an issue.

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Quote History

Quoted:

Quoted:
Don't know if it would work but you might be better off getting yourself a Mod.94 in .375 Winchester (modern version of the older 38-55). I would be concerned about possible timing issues with the longer case, and whether or not the 92 could handle the operating pressures. 357 mag = 35,000psi/357 max = 48,000psi according to wikipedia

While the longer length of 357 Maximum would make the conversion difficult if not impossible, the added case pressure wouldn't be a worry. The Rossi is also chambered in 454 Casul and that's a 60,000psi rd so a 'mere' 48,000psi wouldn't be an issue.

The 454 Casul is built on a beefed up heavier action than a standard 45 Colt. They weigh more as a result. My friend has the Casul version and I have the 45 Colt model. There is a difference between the two.

The 357 Maximum is to long to feed through the short action of the 1892.

If you look into reloading data on the 357 magnum in a lever action rifle you would be surprised at how well it does. I would try loading a 180 WFN cast bullet over a max charge of Lil gun or H110 and see how it performs. Make sure you slug the barrel of your rifle to see what diameter bullet you need. Example if your barrel slugs at .357 then you would want to load a .358 or .359 sized cast bullet.

Posted: 5/14/2017 10:51:44 AM EDT

[#14]

The Winchester Model 94 would be a candidate for the conversion as it has a longer action for the 30-30 rd and has been chambered in 357mag, although not as successfully as the Model 92. However, the 94's already chambered in a caliber with better performance than the 357 Max and should you want a 35 caliber bullet, They are also chambered in 35 Remington so, even though it's possible, the conversion wouldn't make a lot of sense to me.

Posted: 5/14/2017 11:48:16 AM EDT

[#15]

Yeah, the conversion losses it's appeal when you move it to the larger 94 frame. It's the petiteness of the 92 frame that is the driving force of the idea.

Posted: 5/14/2017 11:58:03 AM EDT

[#16]

It would not feed reliably

the 357 magnum, with H-110/win296 powder and a 16" barrel is plenty for deer.

22gr 296 125JHP 2241fps (1394ft/lbs)

19.6gr 296 140XTP 1963fps (1198ft/lbs)

17.3gr 296 158XTP 1748fps ( 1072ft/lbs)

Attached File

Posted: 5/14/2017 2:00:15 PM EDT

[#17]

Shooting an 1894 with 357 max out of a 16" barrel is very similar in performance to a regular 357 mag out of a 20" 1894.

Using Lil' Gun/H110 loads.

Posted: 5/15/2017 8:52:38 AM EDT

[#18]

Quote History

Quoted:
Shooting an 1894 with 357 max out of a 16" barrel is very similar in performance to a regular 357 mag out of a 20" ~~1894~~ 1892.

Using Lil' Gun/H110 loads.

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Fixed it for ya.