Author Topic: Reloading the 45-75  (Read 3815 times)

Offline squarehead1

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Reloading the 45-75
« on: September 06, 2015, 10:38:29 AM »
Gentlemen,
I have now assembled all of the necessary components to start reloading.  My brass is new Jamison 45-75.  I have no experience in loading rifle cartridges.  I know from reloading handgun cartridges that trimming to an accepted uniform length is critical.  Thus my confusion.  My new brass varies in length.  Of the 60 cases measured, 51 are at or slightly exceed 1.875", 9 are less, at about 1.864"
Cartridges of the World specifies 1.885".  A CAS article from 1/14 specifies 1.885.  I purchased some BP cartridges formed from .348 Win, which measure 1.847"
So now I ask you for some definitive advice.
What length to trim to?  What to do with the 9 undersized cases.
Thanks,
Squarehead1

Offline August

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Re: Reloading the 45-75
« Reply #1 on: September 06, 2015, 12:06:58 PM »
What kind of rifle are you going to use these cartridges in?  If it is a single shot, the case length is a non-issue, as most long range BP shooters use just enough neck tension to keep the bullet from falling out and no more.  In single shots, crimping is not required nor recommended. 

If, on the other hand, you're going to run these through a lever gun, the length becomes important because of the need for consistent crimping.

So, first, what rifle will you use these in?

Offline squarehead1

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Re: Reloading the 45-75
« Reply #2 on: September 06, 2015, 12:48:56 PM »
These will be used in a Uberti repro 1876

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Re: Reloading the 45-75
« Reply #3 on: Today at 03:19:06 AM »

Offline Blair

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Re: Reloading the 45-75
« Reply #3 on: September 06, 2015, 01:01:25 PM »
August,

Very good suggestion.

I would also like to suggest fire forming some of the short and long cases in the firearm you wish to shoot them in... and measure the overall length afterwards.
This might let you know if there is some difference in the manufacturing of different lots of cartridge cases?

If you are going to be using these in a repeater like a '76, then you may want to establish the shorter cases of the batch as a standard to help allow OVA case length, and bullet position, to best feed through the action.
My best,
 Blair
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Offline squarehead1

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Re: Reloading the 45-75
« Reply #4 on: September 06, 2015, 01:36:33 PM »
I've not done fire forming before.  I have a couple of boxes of .452 Lazer cast and a couple of lbs of Unique.  will they work?  How to?

Offline Blair

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Re: Reloading the 45-75
« Reply #5 on: September 06, 2015, 01:51:17 PM »
squarehead1,

No bullet needed.
Just a powder charge (I only recommend BP) and a tight fitting wad in the mouth of the case.
That is all you should need.
My best,
 Blair
A Time for Prayer.
"In times of war and not before,
God and the soldier we adore.
But in times of peace and all things right,
God is forgotten and the soldier slighted"
by Rudyard Kipling.
Blair Taylor
Life-C 21

Offline Sir Charles deMouton-Black

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Re: Reloading the 45-75
« Reply #6 on: September 06, 2015, 03:17:49 PM »
squarehead1,

No bullet needed.
Just a powder charge (I only recommend BP) and a tight fitting wad in the mouth of the case.
That is all you should need.
My best,
 Blair

That's one way, and I have done that. The alternative is to load a batch of rounds and use them for sighting in and practice. The result will be a batch of fireformed cases for fine-tuning your ammo.
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Offline squarehead1

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Re: Reloading the 45-75
« Reply #7 on: September 06, 2015, 05:16:57 PM »
While trying to determine optimum case length, i thought it wise to slug the barrel with a .458 bullet (and great difficulty).  The result: a tight barrel at .4535 /.449.
I used to shoot N-SSA and as a result have learned to avoid BP because of the time required for clean up, both rifle and me.
I am now leaning toward a .452 bullet over 15 grns Unique in the undersized cases as fire forms and sighting starters.
What think you all? ( I am in VA, thus I may use, "you all").
Thanks,
Squarehead1

Offline Sir Charles deMouton-Black

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Re: Reloading the 45-75
« Reply #8 on: September 06, 2015, 07:41:35 PM »
I never said one had to use BP at the fireforming stage if you wish to employ smokeless.  The result will be equally successful.
NCOWS #1154, SCORRS, STORM, BROW, 1860 Henry, Dirty Rat 502, CHINOOK COUNTRY
THE SUBLYME & HOLY ORDER OF THE SOOT (SHOTS)
Those who are no longer ignorant of History may relive it,
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With apologies to George Santayana & W. S. Churchill

"As Mark Twain once put it, “History doesn’t repeat itself, but it does rhyme.”

Offline ndnchf

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Re: Reloading the 45-75
« Reply #9 on: September 06, 2015, 07:47:16 PM »
Squarehead - what part of the old dominion do you hail from? I'm in Fredericksburg and shoot an Uberti 1876. But mine's a 50-95. I shoot BP primarily, and some smokeless. There is a lot of good information in the 1876 Winchester forum further down the list too.
"We're all travelers in this world.  From the sweet grass to the packing house, birth till death, we travel between the eternities"  Prentiss Ritter, Broken Trail

Offline squarehead1

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Re: Reloading the 45-75
« Reply #10 on: September 07, 2015, 07:15:50 AM »
I am in the Martinsville area.  1 hr South of Roanoke, 45 min West of Danville.  Thanks for the 1876 tip.

Offline rickk

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Re: Reloading the 45-75
« Reply #11 on: September 08, 2015, 11:50:24 AM »
The first time you shoot them the brass will do all sorts of crazy things anyway.  Load the undersize cases with powder and shoot them in a practice session. They will grow a fair amount on the first shot. After that they wont grow very much any more until they  approach end of life.

Offline ndnchf

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Re: Reloading the 45-75
« Reply #12 on: September 08, 2015, 04:26:05 PM »
I am in the Martinsville area.  1 hr South of Roanoke, 45 min West of Danville.  Thanks for the 1876 tip.


You are down the road a far piece. Too bad, it would be be fun to have another '76 at the range.
"We're all travelers in this world.  From the sweet grass to the packing house, birth till death, we travel between the eternities"  Prentiss Ritter, Broken Trail

 

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