HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: pliers
New Today: 0
New Yesterday: 0
Overall: 12490

People Online:
Members: 0
Visitors: 61
BOT: 4
Total: 65
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Forums
04: Forums
05: Forums
06: Forums
07: Photo Albums
08: Home
09: Forums
10: Forums
11: Forums
12: Forums
13: Forums
14: Forums
15: Forums
16: Home
17: Forums
18: News
19: Forums
20: Forums
21: Forums
22: Forums
23: Forums
24: Forums
25: Forums
26: Home
27: Forums
28: Forums
29: Forums
30: Forums
31: Forums
32: Forums
33: Forums
34: Forums
35: Your Account
36: Forums
37: Forums
38: Forums
39: PointBlank Ballistics
40: Forums
41: Forums
42: Photo Albums
43: Forums
44: Forums
45: Home
46: Forums
47: Home
48: Your Account
49: Forums
50: Forums
51: Forums
52: Forums
53: Forums
54: Your Account
55: Forums
56: Forums
57: Forums
58: Photo Albums
59: Forums
60: Forums
61: Forums
  BOT:
01: Forums
02: Forums
03: Your Account
04: Photo Albums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 304
 Pictures: 2342
  · Views: 307160
  · Votes: 1302
  · Comments: 85
 

Support our Advertisers

Thompson 1927 A1 Ammo
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition

View previous topic :: View next topic  
Author Message
GUTS
Member
Member


Joined: Nov 01, 2007
Posts: 85
Location: South Dakota

PostPosted: Sun Jun 01, 2008 10:54 pm    Post subject: Thompson 1927 A1 Ammo Reply with quote

I bought a 1927 A1 a month ago. I also bought a 250rnd box of 230grn Magtech .45ACP. I have had a problem with this rifle short stroking. The recoil springs are very stout, it takes a lot of force to pull the bolt back. This Magtech ammo chrony's at about 830FPS, fairly slow and I'm thinking this is the reason for the short stroking. I am going to reload the brass and I was wondering if any of you fellows have experience with the Thompson and could recomend a load that would make it cycle properly. Thanks
Back to top
View user's profile
Pumpkinslinger
Super Member
Super Member


Joined: Sep 22, 2007
Posts: 4411
Location: NC foothills

PostPosted: Mon Jun 02, 2008 3:28 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

Guts, a friend of mine has an original full-auto Thompson. I'll email him and see what he uses. Might be a day or two before he responds.

_________________
Mike

"I ain't no better than anyone else, and there ain't no one better than me!" Ma Kettle

Back to top
View user's profile AIM Address Yahoo Messenger Photo Gallery
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3451
Location: Lost for good !!!

PostPosted: Mon Jun 02, 2008 8:44 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

Let me first state that my knowledge on the Thompson is not that great.
( although I would love to own one )

Most standard 230 gr. loads are in the 830 fps range.
Some go higher but are usally well under 900 fps.
Some Cor Bon +P loads have been clocked over 950 fps.

With that said my thinking is this .........
Back when the Thompson was made, all they had was standard ammo. I also belive that the ammo had less pressure. (lower velocity)
So don't spend a whole lot of money and time trying a bunch of different loads. Try something you know thats hotter and see how it goes.
Hopefully I'm wrong in my way of thinking and theirs nothing wrong with Tommy !!!!!!!!!!

One last thought ....... When was the last time it had a good cleaning and oil change !!!!!!!!!!!!!!!!!

_________________
Ask as many people needed, sooner or later your question will be answered the way you want it answered !!!

A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.
~George Washington
Back to top
View user's profile Photo Gallery
Bushmaster
Super Member
Super Member


Joined: Jun 12, 2005
Posts: 10326
Location: Ava, Missouri

PostPosted: Mon Jun 02, 2008 9:08 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

Yeh...While Pumpkinslinger goes for the needed information why don't you completely disassemble that Tommy and clean it. Then reassemble it with a good lubing. Both sound good to me.

One thing. The velosity for .45 ACP rounds was measured using a 5 inch barrel. Even in those days. the 830 fps is derived from such a barrel. From the Thompson it should be a bit faster (longer [not much] barrel)...

_________________
I have one nerve left and yer standin' on it...

DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote...
Back to top
View user's profile
Crackshot
Super Member
Super Member


Joined: Oct 23, 2005
Posts: 1693
Location: Mich

PostPosted: Mon Jun 02, 2008 10:42 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

I have a Thompson 1927A1 and use Lee home cast lead 230gr bullets with Lee liquid alox lube over 5.0gr Bullseye powder with no short cycle at all.
This load shoots great out my STI Trojan and does not do bad from my Thompson.

_________________
The human mind is the weapon, the gun is just one of its tools.
Back to top
View user's profile ICQ Number AIM Address MSN Messenger Yahoo Messenger Photo Gallery
Pumpkinslinger
Super Member
Super Member


Joined: Sep 22, 2007
Posts: 4411
Location: NC foothills

PostPosted: Mon Jun 02, 2008 10:43 pm    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

From my friend:

"I have no trouble using 6.5 grains of Unique and a 230 grain cast lead bullet or 5.0 grains of Bullseye with a 230 FMJ. I don't know what the bolt weighs on the semi version, but those loads work just fine in an M1928A1."

Once again, I'm tickled with the folks I've met on the internet and the knowledge they have.

_________________
Mike

"I ain't no better than anyone else, and there ain't no one better than me!" Ma Kettle

Back to top
View user's profile AIM Address Yahoo Messenger Photo Gallery
GUTS
Member
Member


Joined: Nov 01, 2007
Posts: 85
Location: South Dakota

PostPosted: Tue Jun 03, 2008 5:44 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

Thanks a lot fellas, as always you guys are here for each other(me), makes me feel warm and fuzzy. It's a new rifle with approx 150 rounds through it. I am one of those crazy anal guys about cleaning my rifles, after I'm done shooting they are tore down and completely gone through and oiled up like a $10 stripper. I used to shoot a little 1911 in indoor range competition back in the 70's and it seems like we loaded the rounds down to almost squib rounds(850FPS) where the 1911 would barley cycle. It was a long time ago and I haven't had anything that shoots .45ACP for many years, that's why I thought the standard .45 was a little hotter right out of the box. This rifle has really tough springs behind the bolt, it will leave a mark in your flesh from cocking it back. I thought the 16" barrel would run them out a little faster too, but the loads are so weak it dosen't seem to speed them up at all through the longer barrel. I'll load them up to around 900 and see what it will do. Once again, thanks a bunch. Very Happy
Back to top
View user's profile
Pumpkinslinger
Super Member
Super Member


Joined: Sep 22, 2007
Posts: 4411
Location: NC foothills

PostPosted: Tue Jun 03, 2008 7:16 am    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

GUTS, in my .40 S&Ws, a Browning HP and a Ruger PC4, I saw a gain of 300+ ft/sec in the carbine. Now that was with a light bullet (135 gr JHP over Hodgdon LongShot) loaded to the max in the manual. Near as I can remember heavier bullets (180 gr) showed maybe a 200 ft/sec gain.

_________________
Mike

"I ain't no better than anyone else, and there ain't no one better than me!" Ma Kettle

Back to top
View user's profile AIM Address Yahoo Messenger Photo Gallery
Gil Martin
Super Member
Super Member


Joined: Jan 28, 2005
Posts: 1620
Location: Schnecksville, PA

PostPosted: Tue Jun 03, 2008 3:56 pm    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

I have an M1 Thompson and had a 1927A1. They did well with hard cast bullets and a healthy dose of Unique. Neither gun would chamber bullets with a light roll crimp. They demanded a taper crimp. All the best...
Gil

_________________
Gil
Back to top
View user's profile
Joe Boleo
Super Member
Super Member


Joined: Dec 25, 2006
Posts: 427
Location: Pennsylvania

PostPosted: Wed Jun 04, 2008 5:31 pm    Post subject: Re: Thompson 1927 A1 Ammo Reply with quote

I agree with Gil. Take care...
Joe
Back to top
View user's profile
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition
Page 1 of 1
All times are GMT - 7 Hours



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Advertisements
 


Valid CSS! Valid HTML 4.01!
Click to check if this page is realy HTML 4.01 compliant for speed :)

All logos and trademarks in this site are property of HuntingNut.com.
The comments are property of their posters, all the rest © 2011 by HuntingNut.com
Interactive software released under GNU GPL, Code Credits, Privacy Policy

.: Upgraded to DragonFly 9.2 by Dizfunkshunal :.