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Old November 13, 2016, 08:32 PM   #1
candlejackstraw
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reloading for rossi m92 44 magnum

Hello, maybe Yall can help me out or offer some guidance...
I'm reloading some 44 magnum 240 grain LSWC over unique powder to shoot out of my rossi m92 24 inch lever action.
I did a ladder test, from 7.0 to 9.0 grains of unique. Oal 1.66 (my rifle cannot cycle anything much larger then that). Anyway, my highest load, the 9.0 grain was shooting a little lower then point of aim at 100 yards. I have a marbles bullseye rear sight (the long version, I can't raise it to the highest step on the leaf unfortunately)
So here's my question, can I step up the load to 9.5 or 10 grains without leading issues? Does anyone run a load like this? Should I just order and switch to a short marbles bullseye sight or skinner sight?
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Old November 13, 2016, 08:36 PM   #2
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These are the primers at 9.0 grains of unique


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Old November 13, 2016, 09:04 PM   #3
KEYBEAR
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Were are you getting your load data ? I load a lot of lead in 44 Mag for my Super Blackhawk and also use Unique at 10.2 GR. 240 lead . If it is good hard cast lead I would think you can go up with no problem .

10 gr is a starting load with Unique .
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Old November 13, 2016, 09:37 PM   #4
candlejackstraw
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the lee loading manual has it insanely low, 6.2 to 7.0 with a 1.605 oal.

Lymann on the other hand has 9.8 to 13.0 but with an oal of 1.71 (which my gun wont feed)
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Old November 14, 2016, 09:02 AM   #5
Chainsaw.
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Those primers are just fine. You can keep easing up a little. Keep in mind that Braziltech doesnt build the strongest gun so dont be getting crazy. That being said Mine never had an issue. Run the oal you like but work up from what you already know works safely.
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Old November 14, 2016, 02:41 PM   #6
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Depends on the bullet but with a proper sized hard cast (18-20) brennel 10.0 shouldn't be an issue. Powder coat them and you can run them even harder.
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Old November 14, 2016, 03:26 PM   #7
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The Lee numbers seem low because they are based on keeping the pressure low enough not to upset the bullet substantially. However, that isn't always what shoots best.

The first question I have is what is the condition of your bore like? I always slug a bore intended for lead bullets to feel for constrictions. If so, firelapping is the simple way out. If it roughly made and tends to grab lead, but is dimensionally straight, you may want to do a little light firelapping with it using only finer grade abrasives. Unfortunately, unless you own a borescope, the only way I know to find out is to try it.

I've been having decent luck using Boretech Rimfire Blend as the bore cleaner for lubricated lead bullets, but if I get serious leading I use Wipe Out's special product called No Lead.

Otherwise, in addition to powder charge, experiment with different bullet weights. Go to a gas check if you need to. But your loads are pretty mild as they stand.
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Last edited by Unclenick; November 14, 2016 at 05:47 PM. Reason: typo fix
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Old November 14, 2016, 04:29 PM   #8
Pathfinder45
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Candlejackstraw, can you show us a picture of both your front and rear sights?
I your front sight is a simple post, you could file it down just a very tiny amount to raise your point of impact. Obviously, there are some front sights that you would not want to file.
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Old November 14, 2016, 06:47 PM   #9
candlejackstraw
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Honestly ive never slugged or firelapped a bore. Just started reading about slugging a barrel, never even heard of firelapping. I've read that the older pumas and rossi's had oversize bores but apparently that was corrected in the mid 2000's. I bought this one last year. I can ask my gunsmith if he has supplies to slug it.

I can take a picture of the front and rear sights for ya'll. the front is the brass peg and the rear is the marble's bullseye. Ill take a few pictures and upload them after I'm done eating :P
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Old November 14, 2016, 06:52 PM   #10
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Sorry for the picture quality and background 20161114_175048.jpg20161114_175109.jpg20161114_175125.jpg

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Old November 16, 2016, 12:00 AM   #11
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OK, you don't want to be filing on that front sight. However, it looks to me that you can raise the rear sight to a higher step on the elevator, but you may have to turn the elevator around or file off the portion that interferes with the receiver and blocks further movement.

Last edited by Pathfinder45; November 16, 2016 at 12:01 AM. Reason: spelling
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