45 ACP Cylinder for my Uberti Dalton.

[Tronicst1]

So, I just received my 45 ACP Cylinder and did the minor fitting required for my Uberti Dalton, 45 Colt.
The Cylinder is from Taylor's & Co. and works just fine in my Uberti. I originally purchased the 45 ACP Cylinder
to shoot C45S Rounds through it, as I have read about a few people shooting C45S Rounds through their
45 ACP Cylinders.

I found that I can drop 6, 45 ACP Brass Cases in the 45 ACP Cylinder and my Uberti cycles and operates
just fine. If I try and load C45S Brass I find that it gets tighter as I push it further into the Cylinder. I found
that this is due to the Cylinder having a slight taper in it to coincide with the taper on the 45 ACP Brass.

So my plan now is to use my 45 ACP Cylinder to test sub 14,000 C.U.P. rounds and then use that data to
load C45S Cases and fire them in my 45 Colt Cylinder. This must seem like a bunch of trouble to go through
to shoot something, but I guess that's just me.

[Hair Trigger Jim]

I would try sizing your C45S brass in a .45 ACP sizing die if you haven't already.

[Tronicst1]

Have not tried that, but would that cause an issue of after the round has been fired
having the brass be a bit tight to remove

[Advertising]

[Hair Trigger Jim]

I doubt it; it should be easier to remove, if anything.  The .45 ACP sizing die might size the brass just a bit smaller than a .45 Colt die would, to better fit the .45 ACP chambers.  No promises, of course.

[Tronicst1]

I'll pull out my dies and check.

[Tronicst1]

So, pulled out my 45 ACP die set and used the sizer on the C45S Brass. The C45S Brass drops right into the 45 ACP Cylinder.
The new issue is that the C45S Brass rim is .060" thick and the 45 ACP Brass rim is .049" thick so now a full load of C45S Brass
in the 45 ACP Cylinder causes the Cylinder to bind up and not operate correctly.

Back to using the 45 ACP Cylinder with 45 ACP Brass to build and test sub 14,000 C.U.P. loads before trying them in C45S Brass
using them in my 45 Colt Cylinder.

[Tronicst1]

An't this stuff fun ! 

[Hair Trigger Jim]

You betcha!

[Baltimore Ed]

Glad you got them to chamber but too bad they didn’t work. You could always gently chuck the c45s brass into your drill press and remove .11 from the case head with some emery. Assuming that the primers are still below or flush after you were done. I have a RCMP New Service that is/was 45colt [barrel stamp] but someone installed a 45acp cylinder. Single 45acp rounds drop right in and fire along with c45s loads. One of my favorite NS revolvers.

[Hair Trigger Jim]

You might be able to get away with removing less than .011, depending on how much more clearance is actually needed.  Start small!

[Coffinmaker]

  Ah Well 

Before you go grinding away on a pile of C45S cases, I suggest you check your Head Space and End Shake.  Your cylinder may well be the problem.

Optimum Head Space is .004 +/- .001 but is workable out to about .007 - .008.  End Shake is acceptable at .001.  Could be the simple expedient of sizing the Cylinder Bushing could ease Head Space enough for successful dual cartridge use.

[Tronicst1]

Have decided to use the 45 ACP Cylinder for my HDY HAP 230 GR / 5.0 GR of W231 loads only.
I am not going to shoot C45S any more as the rounds that I made to shoot in the 45 Colt Cylinder
were too anemic to shoot and I do not want to damage my Uberti by trying to up the charge any
more.

[Tronicst1]

Thanks to all of you for your input. 

[King Medallion]

You should be able to load any 45 acp loads in your 45 spl brass and be safe, sans +p loads. I have a pair of Uberti/Remington 1890's in 45 Colt with the acp cylinder and shoot the 45spl brass in the acp cylinder often with no issues.

[Professor Marvel]

As King pointed out, any standard .45 ACP load will be safe
IN A .45 ACP CYLINDER

In modern revolvers, it is the cylinder which is properly hardened to take the pressure.
For example, in the S&W 2nd model hand ejector, circa 1904 ish to 1917 ish
the original cylinders were made and proofed for the then standard ~12k to ~14k pressures of the
.45 Colt, .45 Webley, .45 blah blah blah

for the redesigned S&W Model 1917for the US military, the cylinders were heat treated to take
the .45 ACP loads and proofed as such in Europe.
from that timee forward ALL S&W ctylinders in the large frame .44 and .45 loadings were so hardened,
At a later time, S&W decided to harden smaller frame cylnders to approximately the same hardness.

Fun fact: When the FBI wanted a .357 ,  the S&W Model 10 heavy barrel was literally just reamed
for .357 magnums and sent to them. It later became the 3" .357 S&W heavy barrel Model 13.
Thus, the model 10 .38 spcl cylinders had ( or may still have) the same heat treating as the Model 13 .357
Saves a lot on different arts and possible mixups. (this tidbit from the archivists and histarians on the S&W forum)

yhs
prof m