1851 colt .36 ball size

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WELCOME to the forum motor.
I can't exactly answer your question but i do recall being told here when i bot my first .36 that most likely i would need a .380 mold.
I had allready bot a .375 but haven't cast or tried any yet.
A Navy that i recently bot came with a box of factory FIE's and they are .375's.
I should add tho that this box is very old.
 
I just picked up a Uberti 1851 Navy .36 and have used both the .375 and .380 round balls. I my opinion the .380 is a better fit.
 
The only way I'd try to cram .380"s in my ASM '51 is if I were loading the cylinder off the frame. The under-barrel loading ram is only going to put up with just so much of that extra stress before it takes a bend.
.375" in a .36 caliber is what has always been suggested in my recollection.
Even if you are casting your own, I don't think that you could expect enough shrinkage to occur to reduce the stress on your ram arm. And that shrinkage I mentioned lots of times comes about due to alloying, which means a harder ball in most circumstances.
As I mentioned above, .36 caliber dead soft (pure) lead .375" balls is what I've always heard mention as the projectile of choice for the C&B revolvers.
 
.375s will fit tight in a Pietta .36. .380s work too; but, will be harder to load.

.375s will sometimes roll out of the chamber on a Uberti .36 (and at the most inopportune time - like during a SASS match - don't ask me how I know) Ubertis prefer .380s.
 
Fingers is right. The firearm brand matters. .375 will work best in Pietta .36's (you can use soft lead .380's but they'll be harder to load), while .380's are really necessary in Uberti .36's.
 
LOL--Mr. Fingers experienced the same thing I did with my Uberti .36 Navy.:) I couldn't believe that the Hornady .375's were actually falling out but they did. I cast my own soft lead .380's and they do fit tighter but they don't come out. Bottom line is that the gun manufacturer makes a difference.
 
I use .380" balls in all my .36 caliber revovlers, whether Uberti or Pietta. Simplifies things to carry one size of ball in my loading box.
Seating the .380" ball doesn't require much more pressure than the .375 inch. If you bend a seating lever doing so, you're either applying far too much pressure after the ball is well seated, or you've purchased a revolver that is junk.
In the early 1970s, when I first began shooting cap and ball revolvers, Spanish-made cap and balls were noted for having abysmally poor quality and made of pot metal, with little or no heat treatment.
Back then, it was no unheard of to see a revolver with a bent loading lever. By the 1980s, Spain stopped producing cap and ball revolvers and quality of cap and ball revolvers made elsewhere increased.
Today, if you bend a loading lever on a recently made gun, you're either abusing it or have found a fluke that was not heat-treated.
 
thanks for the input. i just bought .375 balls because it was available. i will try .380 if i can find it locally.
 
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