Uberti 1876 in 45-75

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ken1989

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Okay, just purchased a NIB Uberti 1876 (Uberti model # 2501 W76) in 45-75, serial number W326XX. No idea date of manufacture.

My understanding these Uberti 1876 45-75 come in two chamber sizes - original 45-75 WCF (SAMI spec) and a larger Uberti chamber. Supposedly Uberti corrected the chamber problem and all new 1876's are SAMI spec.

The question I have is, which chamber do I have? I need to know this in order to get the proper reloading dies. My understanding is the only way I can find out which chamber I have is to try to see if a fired case from a Uberti 1876 with the large chamber will fit into my chamber of my gun.

Does anyone know where I can get a fired 45-75 case from a Uberti 1876 with the larger chamber?

Does anyone know when they stopped making Uberti 1876's with the larger chamber?

Any help is much appreciated.
 
Sounds like a problem that was fixed a few years back. You could cast the chamber and measure it, or just fire a shell and measure the fire formed brass.

If it is not within maximum dimensions, send it to Uberti to fix. Were you thinking of custom ordering dies as an option?
 
There should be a date code stamped on the reciever, a rectangle with letters in it.



If you know when they stopped making the larger chamber this may help.
 
Thought about that Skinny. I am aware of Italian proof date codes. I can not find the proof codes on the Uberti 1876 - not visible on the receiver. Second problem, I do not know when Uberti stopped making the large chamber in the 1876. I looked everywhere I could think of for both. Thank you for your help.
 
What's a "clean powder"? I load 3031, 5744, Varget when I shoot smokeless in my BPCR's. If a few unburned granules of smokeless powder bother you, try black powder!
 
I am shooting smokeless as I do not want the brass parts in the action to get all fouled up. Have not shot it allot so far, but IMR-3031 at 44 grs with 325 gr bullet works quite well. I need to get heavier bullets (350 grs).
 
The "brass parts in the action" you refer to are accessible for cleaning. Those of us who shoot in CAS with such guns do it all the time.

It's the brass that really requires labour intensive cleaning.
 
Unfortunately mine is in 50/95, but I use 5744 and have been working up to max loads to find the right load for the speed I am looking for.

Lovely guns to shoot.
 
Here is some interesting information on loading the 45-75

This relates to using standard large rifle primers in contrast to magnum large rifle primers. Huge step change in consistency and performance.

Used Federal Gold Medal Match GM215 M Large Magnum Rifle Primers in the second set of five rounds.

Here is the first five of ten today using 44 grains IMR 3031 pushing the 300 Barnes. Standard Large Rifle Primers. ( CCI no 200 Large Rifle Primers )

Velocity in feet per second

1382
1593
1464
1544
1515

Now here is the next five using the same 44 grains IMR 3031 pushing the same bullet with MAGNUM Large Rifle Primers.

1687
1667
1685
1692
1659

Very consistent indeed. Not sure if I should try 45 grains or not. Shells came out easy.

Velocity wise it's a good number and all shots within a six inch group at 50 yards.

Will try ten more next time shooting very carefully to see how tight I can group them.

The type of primer made an immense difference.
 
Mangosteen said:
Here is some interesting information on loading the 45-75

This relates to using standard large rifle primers in contrast to magnum large rifle primers. Huge step change in consistency and performance.

Used Federal Gold Medal Match GM215 M Large Magnum Rifle Primers in the second set of five rounds.

Here is the first five of ten today using 44 grains IMR 3031 pushing the 300 Barnes. Standard Large Rifle Primers. ( CCI no 200 Large Rifle Primers )

Velocity in feet per second

1382
1593
1464
1544
1515

Now here is the next five using the same 44 grains IMR 3031 pushing the same bullet with MAGNUM Large Rifle Primers.

1687
1667
1685
1692
1659

Very consistent indeed. Not sure if I should try 45 grains or not. Shells came out easy.

Velocity wise it's a good number and all shots within a six inch group at 50 yards.

Will try ten more next time shooting very carefully to see how tight I can group them.

The type of primer made an immense difference.
Click to expand...

1382 to 1593 with the same load?! That's a huge variation... regular primers not burning the powder consistently i guess?
 
Yes that is what Ken mentioned to me so I tried the magnum.

By the way if I take the energy level of my test by taking the square of the velocity times the bullet weight, then compare it to the highest Lyman load shown in version 49, I am about 12 percent higher in energy.

Does anyone have their highest load they have tried in the Uberti ? ( velocity vs bullet grains)

Just wondering how high people go.
 
I use reformed .348 brass in my original Winchester 1876 's ( I have 4) . My load is a 300 gr. RCBS FN Gas Ck. with 22 gr. of 2400 powder.
To my surprise & amazement this full octagon rifle made in 1885 shoots about 1" groups @ 100 yds. Once I shot a CLOVER
LEAF @ 100 yds. Before shooting this rifle & load I would have not believed possible. A friend of mine , Ken , has the same results
with his original '76 , but in .45-60 . I do not think many people have originals '76's & if so do not shoot them . This leads to
few people knowing how they shoot. ,,,,,,,,,,, Frank
 
Frank have you had a chance to measure the velocity of your 300 grain bullet?

I am wondering how much higher I can go and stay under 28000 cup pressure.

Anyone know how to reverse engineer muzzle energy back into pressure? Any correlations ?

I have no way to find out how close I am getting to the Lyman suggested max of 28 thousand in pressure.
 
Frank McFarquhar said:
I use reformed .348 brass in my original Winchester 1876 's ( I have 4) . My load is a 300 gr. RCBS FN Gas Ck. with 22 gr. of 2400 powder.
To my surprise & amazement this full octagon rifle made in 1885 shoots about 1" groups @ 100 yds. Once I shot a CLOVER
LEAF @ 100 yds. Before shooting this rifle & load I would have not believed possible. A friend of mine , Ken , has the same results
with his original '76 , but in .45-60 . I do not think many people have originals '76's & if so do not shoot them . This leads to
few people knowing how they shoot. ,,,,,,,,,,, Frank
Click to expand...

Frank that is very impressive shooting. I take it that your using a scope or is that open sights like Jed Clampett?
 
Just heard back from Neco. The program of 45-75 is covered off in both Sharps and Winchester so ordered it. Will back correlate to chronograph readings and find out how I approach the 28 thousand psi European max pressure situation. I may stay 15 percent under that. The jacketed Barnes most likely give slightly higher pressures than just lead.
 
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