Bullseye-L Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Wow, that is a short 45 ACP case

+3
davekp
jmdavis
Sa-tevp
7 posters

Go down

Wow, that is a short 45 ACP case Empty Wow, that is a short 45 ACP case

Post by Sa-tevp Sat Jun 06, 2015 9:53 pm

Sorting through some of my recently tumbled Starline 45 brass due to being new at reloading and trying to quantify everything, I measured one case at 0.881". Whoa, that is short. Most of my used brass falls in the 0.885 - 0.890" range.

So then the question comes up, when is a case too short?
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by jmdavis Sat Jun 06, 2015 10:06 pm

Are you sure it's a Starline?
jmdavis
jmdavis

Posts : 1409
Join date : 2012-03-24
Location : Virginia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sa-tevp Sat Jun 06, 2015 10:20 pm

(One trip to the workshop later)

Yep, still Starline 45. .8800 -.8805 -.8810" case length on the Mitutoyo calipers as the case is rotated around. You had me wondering if I picked up one of those gawd awful .40 cases the kids leave behind when they're practicing suppressive fire.
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by jmdavis Sat Jun 06, 2015 10:23 pm

I was wondering if someone had dropped a federal or rp. Let me go to the bench and measure 5 random new Starline cases.
jmdavis
jmdavis

Posts : 1409
Join date : 2012-03-24
Location : Virginia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sa-tevp Sat Jun 06, 2015 10:29 pm

A friend gave me a new Starline case for reference, and it is 0.894". I have a handful of >0.891" that I have set aside for 50 yards when I can keep my 45 shots on the repair center.
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by jmdavis Sat Jun 06, 2015 10:33 pm

Random new cases from a box of 500: .894, .893, .894, .891, .893

Once fired from same box, selecting from 50 fired cases: .888, .889, .891, .889, .891
jmdavis
jmdavis

Posts : 1409
Join date : 2012-03-24
Location : Virginia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by davekp Sun Jun 07, 2015 8:19 am

Is it a 45GAP?

davekp

Posts : 315
Join date : 2011-06-11

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sa-tevp Sun Jun 07, 2015 8:51 am

45 GAP looks like a different animal.

"Another erratum is that the .45 G.A.P. is not .100-inch shorter than the .45 ACP, but .138-inch shorter, has thicker brass (see cross-section), a small primer pocket and a .308 style extractor cut."

http://www.thegunzone.com/glock/gap-v-auto.html
http://www.thegunzone.com/glock/45gap.html
Attachments
Wow, that is a short 45 ACP case Attachment
Shortbrass.jpg You don't have permission to download attachments.(60 Kb) Downloaded 0 times


Last edited by Sa-tevp on Sun Jun 07, 2015 9:00 am; edited 1 time in total (Reason for editing : Edited to add picture of the veteran piece of brass)
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by AllAces Sun Jun 07, 2015 11:33 am

Even from the photo the case on the left is visibly shorter.  Generally, and this comes from the field of Quality Control, a person with normal vision can discriminate 1/32" and I believe this is the standard for Visual Inspections.  That said, it is always best to check with an accurate and zeroed instrument.
AllAces
AllAces

Posts : 745
Join date : 2011-08-30

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by DavidR Mon Jun 08, 2015 1:25 pm

Could it be a case from Mr. Good? he trims 45 brass when he is building test rounds for ransom testing. Maybe one of his got in your stuff
DavidR
DavidR
Admin

Posts : 3032
Join date : 2011-06-10
Age : 70
Location : NRA:Expert, Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sa-tevp Mon Jun 08, 2015 1:58 pm

David, I think you called it. I'm using a thousand pieces of used brass I bought from him along with the once fired brass I made before reloading. There are a lot of small dings on the rim and extractor cut, so I thought it was just very used.

What is too short a case length to use for 45 ACP?

Thanks,
Stephen
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Wobbley Mon Jun 08, 2015 8:27 pm

No.  But I'd user for short line only.
Wobbley
Wobbley
Admin

Posts : 4808
Join date : 2015-02-13

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by jmdavis Mon Jun 08, 2015 9:06 pm

Ok, why would one want short cases for testing on the ransom rest?
jmdavis
jmdavis

Posts : 1409
Join date : 2012-03-24
Location : Virginia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by DavidR Tue Jun 09, 2015 11:39 am

jmdavis wrote:Ok, why would one want short cases for testing on the ransom rest?

Didn't have anything to do with short, that one might have been a cull that just made it in his bunch, My friend Jim, makes test rounds to test guns the build, he uses once fired starline brass, cleans case, primer pocket, and puts them in a case turner that sizes all to exact same length, then trickle charges to exact charge seats and crimps. Ive seen test targets done with his loads well under a inch at 50 yards from the Accu-Lock 1911s
DavidR
DavidR
Admin

Posts : 3032
Join date : 2011-06-10
Age : 70
Location : NRA:Expert, Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by 243winxb Fri Jun 12, 2015 7:43 pm

Under  .888"  is to short.  (SAAMI).Short is not good for accuracy. Used brass would seem to be the problem. Measured after sizing? I hope.
243winxb
243winxb

Posts : 344
Join date : 2013-12-02
Age : 80
Location : USA

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sa-tevp Fri Jun 12, 2015 11:24 pm

Err... measured before sizing. I noticed cases are about 0.002" longer after sizing. While I save my longer cases for 50 yard loads, it's kind of academic at this point as my good Slow Fire targets still need a paster or two. Or three.

I have to say, I'm having a lot of fun reloading. A lot of material to study, learn and master.
Sa-tevp
Sa-tevp

Posts : 965
Join date : 2013-07-20
Location : Georgia

Back to top Go down

Wow, that is a short 45 ACP case Empty Re: Wow, that is a short 45 ACP case

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum