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  #1  
Old 03-30-2006, 03:53 PM
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1894CB inside barrel diameter for 44-40


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Can anyone tell me what the inside barrel diameter for the Model 1894 CB in 44-40? I am trying to decide what diameter bullet would be best to use.
I am thinking about the .426" dia. jacketed soft point made by Win and Rem.
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Old 03-30-2006, 05:15 PM
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Quote:
Originally Posted by acerman
Can anyone tell me what the inside barrel diameter for the Model 1894 CB in 44-40? I am trying to decide what diameter bullet would be best to use.
I am thinking about the .426" dia. jacketed soft point made by Win and Rem.
I have a buddy who has a Marlin 44-40 though not a CB and it loves 200 gr sized .429. Mike B.

Opps! That's a Lee cast bullet! Sorry!
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Old 04-09-2006, 11:08 AM
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I've got a 1894S .44/40. I ordered the Win. 200 gr SP .427 bullets and it grouped them like a shotgun. I called Marlin and they said that they used the same diameter as the .44 Mag. I load the Nosler 200 gr JHP .429 and it shoots them pretty well although it's no tack driver by any stretch.
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Old 04-09-2006, 06:37 PM
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Quote:
Originally Posted by SCGunNut
I've got a 1894S .44/40. I ordered the Win. 200 gr SP .427 bullets and it grouped them like a shotgun. I called Marlin and they said that they used the same diameter as the .44 Mag. I load the Nosler 200 gr JHP .429 and it shoots them pretty well although it's no tack driver by any stretch.
If barrel diameter is the same do they both have the 1:38 twist rate?
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Old 04-09-2006, 06:53 PM
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Quote:
Originally Posted by SFT
If barrel diameter is the same do they both have the 1:38 twist rate?
I can't get enough crimp on these Winchester .426 dia JSP bullets.I am using the Lee factory crimp die adjusted all the way to max and I can still push the bullets into the case mouth doing the push test against the bench.No using all that much pressure. Any idea's? How do you do it.
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Old 04-10-2006, 06:43 AM
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In a .44-40 there is no way to prevent the .425/.427 bullets made by Win & R-P from pushing back under recoil & spring pressure! There is no shoulder at the front of the cannelure, the diameter is usually about .415 there. The solution is to use .429 200 gr. jacketed bullets made for the .44 Mag. as they are full diameter in front of the cannelure. Since the nominal groove diamaeter is .429 in these guns that is the correct bullet anyway. Even if they were .427 or so there wouldn't be a problem with .429 bullets.

The only other solution would be using some bitumastic sealer like military amunition is sealed with to glue the bullets in. That would raise pressures even more than the .429 bullet in a .427 bore.
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Old 04-10-2006, 07:05 AM
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Quote:
Originally Posted by Alk8944
In a .44-40 there is no way to prevent the .425/.427 bullets made by Win & R-P from pushing back under recoil & spring pressure! There is no shoulder at the front of the cannelure, the diameter is usually about .415 there. The solution is to use .429 200 gr. jacketed bullets made for the .44 Mag. as they are full diameter in front of the cannelure. Since the nominal groove diamaeter is .429 in these guns that is the correct bullet anyway. Even if they were .427 or so there wouldn't be a problem with .429 bullets.

The only other solution would be using some bitumastic sealer like military amunition is sealed with to glue the bullets in. That would raise pressures even more than the .429 bullet in a .427 bore.
Makes sense. Thankyou.I was pulling my hair out trying to figure it out.Now I have 250 bullets with a .426 dia. that I have no use for.Time to move on to the .429dia. stuff.Thanks again to everyone for the help.Its a great Forum.
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Old 04-12-2006, 07:26 AM
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Time to move on to the .429dia. stuff.

Anyone tried the 240 gr. jacketed .429 dia. bullets in the
44-40?Wondered how they worked.Or, is 200 gr. the heaviest I should go?
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  #9  
Old 04-17-2006, 10:48 AM
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Just checked with Marlin they told me the diameters are as follows for the 1894 CB in 44-40:

Bore diameter - .421" to .423"
Groove diameter - .427.5" to .429"
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