Exact bullet caliber for original '76

[daxbax]

Hi,

anyone knows the correct caliber that must be used in the original '76 45-75.

I try 0.459 chaparral bulletts, but the shot it's hard to fit in the chamber.

[Sir Charles deMouton-Black]

Cartridges of the World, 3d Edition, states that the bullet diameter fo the .45-75 is .454.

I DO NOT KNOW how the Chapparal is set up.  The 456192 mould I got from John Sellman through these pages drops bullets at .454 using wheel weight metal

[Grizzly Adams]

I have seen the .454 listed for the 1876, but I believe it is an error.  I sized some to .454, and could not hit the side of a barn from the inside with them!

All of my originals are .457.   That (.457)  is also the number that Mike Venturino came up with for the correct bore size.

daxbax, What kind of brass are you using, and what is the length?  What bullet do you have available to you in Italy?

Correct bullet weight is 350 grains.

[Buck Stinson]

I agree with Grizzly, all of the original .45-75WCF 1876 rifles and carbines I have owned in the past and those I still own (eight total) have been .457 bore diameter.  The only exception to this is a NWMP carbine that was shipped in 1885.  This gun has a bore size of .455.

Adios,
Buck

[Sir Charles deMouton-Black]

I use fireformed .348 cases.  My Gould HP bullet, which drops at .457, loads in my Chappie NWMP carbine well enough.  I havn't shot my 456192's for accuracy yet.

[daxbax]

Thankyou all for yours reply,

the gun it's an carbine model whit the saddle ring.
The brass I used it's Chaparral too:  http://www.chaparralarms.com/specs/technicalspecs.htm#cases
the bullet it's 0,459 tistributed by chaparral http://www.chaparralarms.com/specs/calibers.htm, the bullet mensioned in 45-75 specs

[McLernon]

My barrel slugs out at 0.457 inches and I use 0.459 1:20 boolits. BP shoots good if I keep the barrel cool and manage the fouling with a blow tube.

Mc

[john boy]

Chaparral
Bore - 452   
Groove - 456

Uberti
Bore - 450
Groove - 456

Use a 459 bullet.  Alloy is what your barrel likes best with either smokeless or black powders