HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: richmo1
New Today: 0
New Yesterday: 0
Overall: 12805

People Online:
Members: 0
Visitors: 106
BOT: 2
Total: 108
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Home
04: Forums
05: Forums
06: Forums
07: Forums
08: Home
09: Home
10: Forums
11: Home
12: Home
13: Forums
14: Forums
15: Photo Albums
16: Home
17: Forums
18: Forums
19: Home
20: Forums
21: Home
22: Forums
23: Forums
24: Home
25: Home
26: Forums
27: Forums
28: Home
29: Forums
30: Forums
31: Forums
32: Forums
33: Home
34: Forums
35: Forums
36: Forums
37: Photo Albums
38: Home
39: Home
40: Forums
41: Forums
42: Forums
43: Home
44: Home
45: Forums
46: Home
47: Home
48: Home
49: Forums
50: Forums
51: Forums
52: Home
53: Forums
54: Home
55: Home
56: Home
57: Forums
58: Forums
59: Home
60: Photo Albums
61: Forums
62: Forums
63: Forums
64: Forums
65: Forums
66: Home
67: Home
68: Forums
69: Forums
70: Home
71: Home
72: Home
73: Forums
74: Forums
75: Forums
76: Forums
77: Home
78: Forums
79: Your Account
80: Photo Albums
81: Forums
82: Home
83: Home
84: Home
85: Home
86: Forums
87: Forums
88: Forums
89: Forums
90: Home
91: Forums
92: Forums
93: Home
94: Forums
95: Forums
96: Home
97: Forums
98: Forums
99: Forums
100: Home
101: Home
102: Photo Albums
103: Home
104: Home
105: Home
106: Home
  BOT:
01: Home
02: Forums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 307
 Pictures: 2393
  · Views: 648753
  · Votes: 1312
  · Comments: 86
 

Support our Advertisers

Crimping Rifle Bullets
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
Go to page Previous  1, 2, 3  Next
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition

View previous topic :: View next topic  
Author Message
PaulS
Super Member
Super Member


Joined: Feb 18, 2006
Posts: 3960
Location: South-Eastern Washington - the State

PostPosted: Wed Dec 05, 2018 8:04 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

Aloysius, I only anneal my cases when I feel the need. I only partially size the necks so they fit the chamber well and center both at the front and rear. Except for the semi-autos, I do full length size those cases.

_________________
Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
Back to top
View user's profile Send e-mail
hunterjoe21
Super Member
Super Member


Joined: Mar 30, 2007
Posts: 1468
Location: Billings, Montana

PostPosted: Sat Dec 08, 2018 5:12 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

Dies have been received.Now I need to clean off the bench...

The Lee instructions for setting the dies are vague at best. Anyone have suggestions or tips/tricks on set-up and what to do/not do with them?

Oh yeah... GO ARMY

_________________
My 1911 is more effective than your 911.
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8037
Location: Fort Worth TX

PostPosted: Sat Dec 08, 2018 6:02 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

slimjim wrote:
Good you got the dedicated Lee FCD. No need to be in the cannelure. In my .270 Win, crimping did not increase neck tension but did reduce variation in tension by 50% - measured with a force gauge pulling bullets. I use a medium crimp, e.g., 0.003" indent in the brass (collet pedals not touching).

It wouldn't be wrong to reduce your powder charge but you are already 1.5 grains below max. I would crimp and go.

I run the blades of the caliber into the groove left by the crimp and compare it to the neck diameter. Mine is about 0.003" less. I even do it for monolithic bullets but it takes a bit more pressure on the lever. You really can't do to much with a lead-core bullet. Maybe start by screwing down the barrel of the collet so the gap in the collet is about half what it is when open and turn down from there.

Or ... run your ram full up, screw down the die until it touches the ram, they continue to turn as your watch the collet petals close.

I don't remember following the directions.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
hunterjoe21
Super Member
Super Member


Joined: Mar 30, 2007
Posts: 1468
Location: Billings, Montana

PostPosted: Sat Dec 08, 2018 6:55 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

Thanks Slim.

I don't always FOLLOW the directions, but I do always READ them.

I watched a few on-line videos, so I at least have a better understanding of the die function. I didn't realize that the shell holder is what actually forces the collet up in to the die body, forming the crimp. Makes sense if you think about it.

I have plenty of unfired .300 Win Mag loads. I'm gonna crimp 10 of them and see if my accuracy is affected.

Prolly try the same for the .270, just cause...

_________________
My 1911 is more effective than your 911.
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8037
Location: Fort Worth TX

PostPosted: Sat Dec 08, 2018 8:48 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

Your loads will be affected because you likely tuned them for no crimp. They may get better or they could get worse. Start with light-medium crimp initially. If they groups get worse, decide if you want to retune or wait until you develop your next load and use right out of the box.

To get more neck tension on my 6.8mm, I went down 0.001" on my bushing and the groups went south. went back to original bushing and started crimping and all was well.

Hope all goes well for you.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
Bushmaster
Super Member
Super Member


Joined: Jun 12, 2005
Posts: 10877
Location: Ava, Missouri

PostPosted: Sat Dec 08, 2018 8:58 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

If the field is knee deep in mud I'll bet on the Army. But if the field is waste deep in water I'll go with the Navy.

_________________
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
Elvis
Super Member
Super Member


Joined: Jul 27, 2008
Posts: 8160
Location: south island New Zealand

PostPosted: Sat Dec 08, 2018 9:08 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

and you wait for the air corps when??????.....or are you ALWAYS going to be waiting if you call up for air support???

_________________
You shot it You pluck it !
Them who eats the most duck eats the most feathers!
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8037
Location: Fort Worth TX

PostPosted: Sat Dec 08, 2018 9:12 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

Elvis wrote:
are you ALWAYS going to be waiting if you call up for air support???

Not if you call for me!

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
Bushmaster
Super Member
Super Member


Joined: Jun 12, 2005
Posts: 10877
Location: Ava, Missouri

PostPosted: Sat Dec 08, 2018 9:30 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

If I call for air support it will be Naval Air.

_________________
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
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8037
Location: Fort Worth TX

PostPosted: Sat Dec 08, 2018 9:32 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

That's me! Go Navy! Beat Army (next year)!

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
hunterjoe21
Super Member
Super Member


Joined: Mar 30, 2007
Posts: 1468
Location: Billings, Montana

PostPosted: Sun Dec 09, 2018 8:11 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

I made some room on the bench this afternoon. I segregated 20 rounds from the remaining ammo I had assembled for the .300 Win Mag to use as a test and crimped 10 of them, using Lee's suggestion of 1/2 turn "down" after the collet contacted the shell holder.

My thinking is I'll fire 1 three round group of non-crimped followed by a three round group of crimped and compare the initial results. Repeat if warranted. I want to keep the same 3 rounds in the magazine during each test, ultimately leaving me with 3 crimped and 3 non-crimped that have had 6 rounds fired "above" them. In my simple mind, the real test will be comparing the final groups which will determine whether mashed tips and crimps make a difference in the original loads. None of it will matter though if there is a significant negative impact to group size during while performing the first part of the test. In that case, I'll need to go back and "tune" my load development using the crimp.

Make sense?

_________________
My 1911 is more effective than your 911.
Back to top
View user's profile
Elvis
Super Member
Super Member


Joined: Jul 27, 2008
Posts: 8160
Location: south island New Zealand

PostPosted: Mon Dec 10, 2018 12:00 am    Post subject: Re: Crimping Rifle Bullets Reply with quote

sure does Mate...for what its worth one of the longest shots Ive ever pulled off was at a chammy/chamious who was standing on a rocky point,first shot clipped her toenails giving me correct Kentucky windage,2nd shot struck true so about 24" projectile drop for .270 winchester 130grn factory load with the big soft lead tip nipped off with sissors!!!! it didnt effect accuracy at all,at least on a horizontal plane anyway.

_________________
You shot it You pluck it !
Them who eats the most duck eats the most feathers!
Back to top
View user's profile
hunterjoe21
Super Member
Super Member


Joined: Mar 30, 2007
Posts: 1468
Location: Billings, Montana

PostPosted: Thu Dec 20, 2018 11:12 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

I'd say that my initial test was inconclusive, mainly due to me having a "bad" day behind the rifles again. The groups fired without the crimp (control group) were worse than normal, so I gotta take the blame.

The .270 crimped groups were slightly worse, while the .300 Win Mag were about the same as the control, except for one. I don't know if I found the "zone" suddenly or it was a fluke, but I fired the best group ever from this rifle.

I have more bullets, plenty of primers and powder, and cleaned brass, so I'll try it again. I might increase the round count though.

_________________
My 1911 is more effective than your 911.
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8037
Location: Fort Worth TX

PostPosted: Fri Dec 21, 2018 7:50 am    Post subject: Re: Crimping Rifle Bullets Reply with quote

hunterjoe, you are getting some good recoil therapy. I don't look for any differences in accuracy. I just make crimping part of the process and develop loads from there.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
English Mike
Super Member
Super Member


Joined: Jan 08, 2007
Posts: 1522
Location: Whitehaven, Cumbria, UK

PostPosted: Fri Dec 21, 2018 2:15 pm    Post subject: Re: Crimping Rifle Bullets Reply with quote

slimjim wrote:
hunterjoe, you are getting some good recoil therapy. I don't look for any differences in accuracy. I just make crimping part of the process and develop loads from there.

If nowt else, it removes one variable from the process & that can only be a good thing.
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 2 of 3
All times are GMT - 7 Hours
Go to page Previous  1, 2, 3  Next



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 :.