Boosting 45LC: High-Pressure Reloads for modern Lever-Action Rifles

serg777

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No, I'm not a lever action fan boy, and I haven't yet jumped on that bandwagon. I mean, I've been eyeing those, but come on! My collection of range toys is already so vast that it would take an entire year of range trips just to give each one a spin.

Here's a little background on me: I'm not a hunter, and my outdoor escapades consist of a few hikes and one camping trip a year. In these wilderness areas, bears and cougars roam free. But wait, don't get your knickers in a twist—this isn't another "best gun for bear defense" thread. I carry a couple of cans of bear spray (thankfully unused so far) and that's enough for me. My wife and I did have two memorable bear encounters, though. In one hilarious incident, while biking through the woods, my wife accidentally smacked into a black bear crossing our path. Her bare leg grazed the bear's wet nose, prompting a bewildered stare from the creature as if we were the village idiots. After that brief, comical moment, we all went our separate ways.

When I recount this tale to friends who have no much knowledge about guns and laws, they often ask why I don't carry a gun in the woods. Well, I wish, but some areas don't allow it, and in others, it needs something in non-R format, which are bulky and unwieldy. If only I could bring along one of my beauties, like the mighty 460SW XVR or some other gems in my collection. On that note, I'd stick to a bear spray.

Here come my relatives, who now want to join us for hikes and camping trips. They're paranoid about wild animals and insist I bring along some form of protection—i.e., a gun. So, my wife grants me a no-holds-barred budget (I'm talking unlimited, baby), which of course led me to more gun purchases, including some expensive antique revolvers and rare gems like the antique C96 so I can technically carry those things in the woods. But, alas, none of these are perfect fit for bear defense, even the "powerful" 44 Russian antique caliber.

That's when I stumbled upon the Lever Action Mares Legs, a compact firearm with an overall length of 24 inches. I had always dismissed these quirky rifles, assuming they were R. I was really surprised to learn they are actually non-R. They're not exactly practical for hunting or range target shooting due to their lack of a full stock, small sight radius, and the sheer ridiculousness of mounting a scope. However, when you're being chased by an animal, your shooting distance is pretty much zilch, making this gun a perfect contender for bear defense.

After some research, I set my sights on the Chiappa 1892 Mares Leg, available in 357, 45LC, and 44 Mag. With bears in mind, the 44 Mag was the obvious choice. But then I remembered my lovely 460SW XVR and my penchant for reloading 45LC cartridges. If you don't know 460SW accepts wimpy 45LC, 454 Casull and some other less powerful calibers where the only difference is the case length and powder charge.

Yes, reloading is my other hobby, since I have many interesting guns in odd calibers, where I have no other choice but reload. Basically, now I reload every caliber I have, including the boring 9mm. However, I still have nothing in 44 Mag and that requires me to buy another set of dies and reloading materials for that new Mares thing.

You might be wondering about the 45LC cartridges in my 460SW. Well, curiosity got the better of me, and I decided to see how far I could push the limits of the 45LC cartridge in my 460SW. After doubling the powder charge listed for the 45LC's max load, I found myself in 454 Casull territory in terms of bullet energy and powder charge. But for the gun itself, this was still small potatoes.

Interestingly, the Casull is essentially an overcharged 45LC with a longer casing to prevent accidental use in 45LC firearms. The hot-rodded load I concocted was quite snappy, but it worked like a charm in the 460SW, with no trouble ejecting the casings. The only hiccup - Large Pistol Primers started imprinting, indicating I'd reached the pressure limit for pistol primers. No wonder 454 Casull requires Large Rifle Primers!

To remedy this, I dialed 45LC down to max load + 80%. Now, after three successful reloads with no issues, this has become my go-to "pet" load (perfect for when I want to give my wrist a break from shooting the 460SW cannon). A quick comparison of powder charges reveals that this "pet" load is equivalent to the max load of a 44 Magnum. Considering that the 45LC and 44 Mag have almost the same case capacity, this conclusion seems spot on.

So, I do have a developed and tested load in 45LC caliber replicating the power of 44 Magnum along with all supplies to produce it. At this point I start thinking - it would be great if I can use those 45LC "pet" loads in a modern lever gun, so instead of buying 44 Mag I can go with 45LC. Looking at Chiappa parts diagram - it appears all three calibers share same receiver and other parts. I guess the only difference is the barrel and bolt, but I think they all made to conform to the strongest caliber of 44 Mag, therefore I would assume the pressures of 44 Mag should be OK in 45LC gun of the same model.

The question then becomes: Can I use my 45LC +P loads, which replicate the power of the 44 Magnum, in the Chiappa 1892 Mares Leg chambered in 45LC? So, my fellow firearms enthusiasts, has anyone else ventured down this path? Or should I play it safe, stick with the 44 Mag, and invest in a new set of dies and bullets for my new Mares?
 
I also bump up my .45LC for my .460 & and .454 carbines.

Not sure on Chiappa but the Rossi '92 comes in .454C: all the same receiver / parts as .45LC model so if you were to find one in .454 get a mares leg stock fit to it and you could shoot hot-rodded 45LC ad 454C without issue. The only concern I have is making sure I dont use the hot .45LC rounds in my .45LC revolver.
 
+1 for the Rossi. I also can not speak for the Chiappa.
I get the desire for the mares leg but the best thing I ever did to mine was get a full buttstock from rusty wood, AND a higher front sight... then I had a 12" barreled carbine that I could actually hit something with, and it was still very, very handy. (Reshape that hideously large loop lever too)
A hot loaded 45 Colt is quite a potent round, more so than 44 mag.
 
I also bump up my .45LC for my .460 & and .454 carbines.

Not sure on Chiappa but the Rossi '92 comes in .454C: all the same receiver / parts as .45LC model so if you were to find one in .454 get a mares leg stock fit to it and you could shoot hot-rodded 45LC ad 454C without issue. The only concern I have is making sure I dont use the hot .45LC rounds in my .45LC revolver.

I have been unable to confirm but I have read in the past that the .454 R92 receiver is heat treated while the .45c and all others aren't. Rossi has once again updated the .454 R92 so I am excited to hopefully finally get my hands on one soon.
 
I have been unable to confirm but I have read in the past that the .454 R92 receiver is heat treated while the .45c and all others aren't. Rossi has once again updated the .454 R92 so I am excited to hopefully finally get my hands on one soon.

Curious where you read this? It makes little sense that they would not heat treat all the receivers.

Ted
 
Rossi is quite the stand-up brand, but alas, they don't offer any short-barreled versions for those who like their firearms petite. But yeah, their 454C is a fantastic option for the matter.

Like I said, the gun will be more of "carry a lot and shoot a little" type of tool, so it needs to be a lightest and shortest possible stick. In hypothetical heart-pounding situations when seconds matter, I don't think one would have enough time for a drumroll and shouldering it anyways. So the absence of full stock I think is a good one.

As far as I see, when it comes to modern Mares Leg versions, it's a choice between Chiappa and Henry. They both appear almost same length and weight. But that goofy large loop! It will be the only thing to change, I guess.

Interestingly, there seems to be a bit of a punchline in the classification of these firearms. The 9" barrel with a 21" OAL goes to R camp, while the 12" barrel and 24" OAL is in non-R. I thought they'd both be R due to their OAL being under 26", but maybe there's a secret rule at play here? Or may be the shorter one outright called a handgun? In any case, as usual, the rulebook seems to be playing a joke on us.
 
Curious where you read this? It makes little sense that they would not heat treat all the receivers.

Ted

On CGN and elsewhere when I would say that the .454 was identical to the .45 aside from the obvious necessary changes. I couldn't find a definitive source to confirm it, though I didn't try very hard honestly. I would imagine that if true it would be a modified heat treat as opposed to being heat treated when the others aren't. That is just a mistake on my part when I wrote out was I was trying to say.

Interestingly, there seems to be a bit of a punchline in the classification of these firearms. The 9" barrel with a 21" OAL goes to R camp, while the 12" barrel and 24" OAL is in non-R. I thought they'd both be R due to their OAL being under 26", but maybe there's a secret rule at play here? Or may be the shorter one outright called a handgun? In any case, as usual, the rulebook seems to be playing a joke on us.

When I asked I was told it was due to the manufacturer classing it as a handgun to avoid the SBR crap in the US. The OAL rule isn't applicable since the gun doesn't fold or telescope, and is manually operated. When the manufacturer outright calls it a handgun I suppose that criteria is irrelevant.
 
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There was some Ruger and t/c only loads published for .45 colt(old Speer manual I believe). That is as about as hot as I would venture. Bears and such are not that hard to kill with good shot placement, I’ve shot more than one with .357 mag rifle and hand gun mostly one and done.
 
I used modern 45 Colt loads using Lil' Gun in my Ruger Bisley revolver, Rossi Ranch Hand and Win94 with no problems.

If the rifle is chambered in 44 Mag as well as 45 Colt, there is no reason why you cannot use 45 loads that approach 44 Magnum pressure level, except brass strength. As always, work up.
 
I've run hardcast only in my Rossi 92's in weights ranging from 200-325gr at speeds to 1500 fps. I had a 92 in 454 Casull & still have my 92 Ranch Hand in 45 Colt.
Folks can run the Rossi 92 hotter than I do, but I've not needed more oomph from 'em for me purposes.

Solid info on the 45 Colt below.
https://leverguns.com/articles/paco/45coltlevergun.htm

Yeah, just piggybacking here, but I've pushed 325gr hardcast bullets out of my 16" R92 as high as 1650fps.

Re: comments from others on the funky short stock of the ranch hand/mares leg, I'd agree that a full stock with the shorter barrel is the far preferable configuration.
 
Yeah, just piggybacking here, but I've pushed 325gr hardcast bullets out of my 16" R92 as high as 1650fps.

Re: comments from others on the funky short stock of the ranch hand/mares leg, I'd agree that a full stock with the shorter barrel is the far preferable configuration.

Yep fer sure. I fit a carbine stock on mine to get the right feel & control.
Rossi RH 45 Colt.jpg
 

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There was some Ruger and t/c only loads published for .45 colt(old Speer manual I believe). That is as about as hot as I would venture. Bears and such are not that hard to kill with good shot placement, I’ve shot more than one with .357 mag rifle and hand gun mostly one and done.

Hornady manuals did this as well. a 300 gr softpoint at 1300 fps is a useful load for bear country. - dan
 
I have a 16” henry 45colt.
I can’t get 1800fps 250g and 1500fps 300g out of it.
No issues with lever kick or sticky extraction.

I use shortened 454 casull brass with a small rifle mag primer.
Plenty of punch that’s for sure.
Mares leg with a full length buttstock would be great for packing around I think
 
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