ASSRA Forum › General › Reloading the Single Shot Rifle › 32 mould diameter ?
(Moderator Group: Moderator)
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic 32 mould diameter ? (Read 3299 times)
Cat_Whisperer
Frequent Elocutionist
*****
Offline


No 1, 9.3x74R

Posts: 3991
Location: Mountains of Virginia
Joined: Apr 17th, 2004
32 mould diameter ?
Oct 23rd, 2015 at 8:27am
Print Post  
Have a CPA 32-40 bbl that is .3135 - .3215 diameters.

This suggests .322 -.323 diameter mould, yes?

  
Cat Whisperer (trk)
Chief of Smoke
Pulaski Coehorn Works and Skunk Works
Drafted May 1970, Retired Maj. U.S.Army
assra #9885
Back to top
WWW  
IP Logged
 
marlinguy
Frequent Elocutionist
*****
Offline


Ballards may be weaker,
but they sure are neater!

Posts: 18233
Location: Oregon
Joined: Feb 2nd, 2009
Re: 32 mould diameter ?
Reply #1 - Oct 23rd, 2015 at 9:30am
Print Post  
Seems like a large variance in diameter of the bore? Is this a choked barrel, or what? .3135" is tiny for a .32-40, and hope that doesn't create issues with a bullet sized to fit the larger diameter of .3215"? 
I would agree on the.322"-.323" diameter mold, just not sure how it will work with the minimum size of your CPA bore.
  
(You need to Login or Register to view media files and links)
Back to top
 
IP Logged
 
Cat_Whisperer
Frequent Elocutionist
*****
Offline


No 1, 9.3x74R

Posts: 3991
Location: Mountains of Virginia
Joined: Apr 17th, 2004
Re: 32 mould diameter ?
Reply #2 - Oct 23rd, 2015 at 10:17am
Print Post  
groove diameter, bore diameter 

puts groove depth (.3215 - .3135 = .008 then divide by 2 = .004")  to normal depth.
  
Cat Whisperer (trk)
Chief of Smoke
Pulaski Coehorn Works and Skunk Works
Drafted May 1970, Retired Maj. U.S.Army
assra #9885
Back to top
WWW  
IP Logged
 
.22-5-40
Oldtimer
*****
Offline



Posts: 828
Joined: Feb 13th, 2010
Re: 32 mould diameter ?
Reply #3 - Oct 23rd, 2015 at 11:40am
Print Post  
I like to go at least .001" over groove for smokeless.  You didn't say if B.S. or fixed..but your .322-.323 should work with either.  In my .38-55 with it's .379 groove dia., I can only use up to .380" in fixed because of chamber dimensions.
  
Back to top
 
IP Logged
 
marlinguy
Frequent Elocutionist
*****
Offline


Ballards may be weaker,
but they sure are neater!

Posts: 18233
Location: Oregon
Joined: Feb 2nd, 2009
Re: 32 mould diameter ?
Reply #4 - Oct 23rd, 2015 at 12:20pm
Print Post  
Thanks for the clarification! That makes much more sense than that much variation in a CPA barrel.
  
(You need to Login or Register to view media files and links)
Back to top
 
IP Logged
 
Cat_Whisperer
Frequent Elocutionist
*****
Offline


No 1, 9.3x74R

Posts: 3991
Location: Mountains of Virginia
Joined: Apr 17th, 2004
Re: 32 mould diameter ?
Reply #5 - Oct 23rd, 2015 at 1:36pm
Print Post  
Yes, with Paul's name on it, it lives up to my expectations of highest quality.  Smooooooth running a patch (or a 00 buck shot) from breech to muzzle.

Have not flipped the coin on fixed or breech seating.

I guess I need to do a chamber cast too.

(00 buck may work for squirrels....)
  
Cat Whisperer (trk)
Chief of Smoke
Pulaski Coehorn Works and Skunk Works
Drafted May 1970, Retired Maj. U.S.Army
assra #9885
Back to top
WWW  
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12487
Location: Why, out West of course
Joined: May 29th, 2006
Re: 32 mould diameter ?
Reply #6 - Oct 23rd, 2015 at 8:54pm
Print Post  
No, .3215 suggests .3215 to .322. Preferably .3215

     Joe. 

  
A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
Cat_Whisperer
Frequent Elocutionist
*****
Offline


No 1, 9.3x74R

Posts: 3991
Location: Mountains of Virginia
Joined: Apr 17th, 2004
Re: 32 mould diameter ?
Reply #7 - Oct 23rd, 2015 at 10:40pm
Print Post  
westerner wrote on Oct 23rd, 2015 at 8:54pm:
No, .3215 suggests .3215 to .322. Preferably .3215

     Joe. 



SO, if it casts .3225 would you size it down a smidge?
  
Cat Whisperer (trk)
Chief of Smoke
Pulaski Coehorn Works and Skunk Works
Drafted May 1970, Retired Maj. U.S.Army
assra #9885
Back to top
WWW  
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint
‹ Previous Topic | Next Topic ›
 
  « Board Index ‹ Board Top  

ASSRA Forum » Powered by YaBB 2.6.12!
YaBB Forum Software © 2000-2026. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge

Page completed in 1.3587 seconds.