HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: 38$uper
New Today: 0
New Yesterday: 1
Overall: 12443

People Online:
Members: 0
Visitors: 97
BOT: 4
Total: 101
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Forums
04: Forums
05: Forums
06: Photo Albums
07: Forums
08: Forums
09: News
10: Forums
11: Forums
12: Forums
13: Photo Albums
14: Forums
15: Forums
16: Forums
17: Forums
18: Forums
19: Forums
20: Forums
21: Forums
22: Photo Albums
23: Forums
24: Forums
25: Photo Albums
26: Forums
27: Forums
28: Photo Albums
29: Forums
30: Forums
31: Forums
32: Forums
33: Forums
34: Forums
35: Forums
36: Forums
37: Forums
38: Home
39: Forums
40: Forums
41: Forums
42: Forums
43: Forums
44: Forums
45: Forums
46: Forums
47: Forums
48: Forums
49: Forums
50: Forums
51: Forums
52: Forums
53: News
54: Forums
55: Forums
56: Statistics
57: Forums
58: Forums
59: Forums
60: Forums
61: Forums
62: Photo Albums
63: Home
64: Forums
65: Forums
66: Forums
67: Forums
68: Forums
69: News
70: Forums
71: Forums
72: Forums
73: Forums
74: Forums
75: Forums
76: Forums
77: Photo Albums
78: Forums
79: Forums
80: Forums
81: Forums
82: Forums
83: Forums
84: Forums
85: Home
86: Forums
87: Forums
88: Photo Albums
89: Forums
90: Forums
91: Forums
92: Forums
93: Forums
94: Forums
95: Photo Albums
96: Forums
97: Home
  BOT:
01: Forums
02: Forums
03: Forums
04: Forums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 301
 Pictures: 2358
  · Views: 285261
  · Votes: 1297
  · Comments: 86
 

Support our Advertisers

OCW !!!
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
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3439
Location: Lost for good !!!

PostPosted: Tue Jul 13, 2010 4:00 pm    Post subject: Re: OCW !!! Reply with quote

Dawgdad, Thanks for your comments !!!

I assure you I'm not trying to apply any snake oil just trying to get others to understand the system has some forgiveness built in.
I truly don't mean to make it sound like a end all, greatest thing since sliced bread.
I apologize if it's sounding that way.

I also agree (as mentioned in opening post) that seating depth changes should be made to fine tune or at least check to see if one can do better.





Stovey, You got it !!!
The 3 loads will obviously generate different amounts of pressure that translate to a difference in velocity but all 3 bullets will exit the barrel in the same harmonic node and share a common POI on target.
Understanding how the barrel reacts when a bullet is fired down it helps in understanding this better.

_________________
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
Gil Martin
Super Member
Super Member


Joined: Jan 28, 2005
Posts: 1591
Location: Schnecksville, PA

PostPosted: Tue Jul 13, 2010 4:21 pm    Post subject: Re: OCW !!! Reply with quote

All this sounds much too complicated for me. For several decades, I have relied upon the suggested Lyman accuracy loads and have been well pleased with the results. Then again, I am just a recreational shooter and cannot get too mired down in all the finer details. All the best...
Gil

_________________
Gil
Back to top
View user's profile
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3439
Location: Lost for good !!!

PostPosted: Tue Jul 13, 2010 4:34 pm    Post subject: Re: OCW !!! Reply with quote

Gil, the mechanics behind it can be.......the process itself is simple !!!

For the most part you start your testing as usual, the difference is how you shoot it and interpret the results.

_________________
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
Dawgdad
Super Member
Super Member


Joined: Feb 08, 2006
Posts: 1033
Location: On the Prairie

PostPosted: Wed Jul 14, 2010 4:52 am    Post subject: Re: OCW !!! Reply with quote

Gil - it is not really that complicated. I made an Excel spread sheet where I enter the maximum safe load value and it spits out 6-8 charges to test with 5 shots each. In 30-40 shots you will have the answer.

If any one wants the spreadsheet send me a pm and I will e-mail it to you.

_________________
Alcohol, Tobacco and Firearms should be a convenience store, not a government agency...
Back to top
View user's profile Photo Gallery
stovepipe
Super Member
Super Member


Joined: Sep 25, 2008
Posts: 4791
Location: Pine, Az.

PostPosted: Wed Jul 14, 2010 7:10 am    Post subject: Re: OCW !!! Reply with quote

Gil Martin wrote:
All this sounds much too complicated for me. For several decades, I have relied upon the suggested Lyman accuracy loads and have been well pleased with the results. Then again, I am just a recreational shooter and cannot get too mired down in all the finer details. All the best...
Gil

Good point ....Sierra sent me some accuracy loads and such. Pretty neat stuff and same are the next loads I'll be trying. Their recipes are different than loading manuals and powder company's.
Back to top
View user's profile
Gil Martin
Super Member
Super Member


Joined: Jan 28, 2005
Posts: 1591
Location: Schnecksville, PA

PostPosted: Sun Jul 18, 2010 7:43 am    Post subject: Re: OCW !!! Reply with quote

I am convinced to give this a try. Thanks for the informative posts. All the best...
Gil

_________________
Gil
Back to top
View user's profile
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3439
Location: Lost for good !!!

PostPosted: Sun Jul 18, 2010 2:22 pm    Post subject: Re: OCW !!! Reply with quote

Gil, Glad to see your gonna give it a try !!!
Please report back with your findings and any general comments or thoughts on the process.

_________________
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
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7053
Location: Fort Worth TX

PostPosted: Fri Jul 23, 2010 1:28 pm    Post subject: Re: OCW !!! Reply with quote

Got to the range today and shot five 3-shot loads for my .270 Win using 150gr Berger VLD bulelts and Ramshot Hunter powder. Which load should I consider my Optimum Charge Weight?

Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7053
Location: Fort Worth TX

PostPosted: Fri Jul 23, 2010 1:32 pm    Post subject: Re: OCW !!! Reply with quote

Wind was 10 mph with gusts to 20 mph mostly from the rear with a component that was slightly left to right. I think the 3rd shot with 53gr of powder may have been a gust (edge of paper). still if you move it back to the left some, it had the lowest POI. Before you say the groups are not very tight, this was at 200 yards (too many people on the 100 yd range).


Last edited by slimjim on Fri Jul 23, 2010 1:52 pm; edited 1 time in total
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7053
Location: Fort Worth TX

PostPosted: Fri Jul 23, 2010 1:43 pm    Post subject: Re: OCW !!! Reply with quote

There are some things recommended with OCW that I don't do. I don't shoot one bullet then move to the next load. I already have 30+ rounds down the barrel since the last cleaning so I don't see mixing the shots as important. The primary reason I don't do this is it increase my chance for human error, e.g., placing the a bullet in the wrong group or fogetting to get up and change the string on my chronograph. Here is the velocity data

_52.0 _ 52.5 _ 53.0 _ 53.5 __ 54.0
2666 _ 2772 _ 2715 _ 2777 _ 2824
2836 _ 2677 _ 2766 _ 2807 _ 2824
2732 _ 2766 _ 2772 _ 2807 _ 2850
2744 _ 2738 _ 2751 _ 2797 _ 2833 _ Average
Back to top
View user's profile
stovepipe
Super Member
Super Member


Joined: Sep 25, 2008
Posts: 4791
Location: Pine, Az.

PostPosted: Fri Jul 23, 2010 2:15 pm    Post subject: Re: OCW !!! Reply with quote

53.5 if yer intended POI was the X/center.
Back to top
View user's profile
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3439
Location: Lost for good !!!

PostPosted: Fri Jul 23, 2010 3:05 pm    Post subject: Re: OCW !!! Reply with quote

I'd be interested in seeing where 54.5 would have landed !!! (If a safe load)

Slim, the shoot one load one target thing is more about heat distribution than a clean or dirty barrel.

What's your procedure for dealing with barrel heat ???

_________________
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
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7053
Location: Fort Worth TX

PostPosted: Fri Jul 23, 2010 3:51 pm    Post subject: Re: OCW !!! Reply with quote

chambered221 wrote:
I'd be interested in seeing where 54.5 would have landed !!! (If a safe load)

My thoughts exactly. It looks like the POI is descending from 52.0 then starts rising again up to 54.0. I looks like the top of the node is between 51.5 - 52.0 and 54.0 - 54.5. I will try 54.5 next time out.

Note, 53.7 is listed as max, however, I had no overpressure signs at 54.0 other than the primers starting to flatten but not as flat as some of my other .270 loads. Nor did my other max loads with the same bullet but other powders show pressure signs.

I was really pleased with the velocity. I was getting almost 200 fps more than with IMR4350.
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7053
Location: Fort Worth TX

PostPosted: Fri Jul 23, 2010 4:08 pm    Post subject: Re: OCW !!! Reply with quote

chambered221 wrote:
What's your procedure for dealing with barrel heat ???

My barrel will only take 2 shots when cold before it heats up enough to affect accuracy. After 2 shots, I leave the action open and the barrel pointing up in the rack to cool. Since weather and temps vary, I use wait until the barrel doesn't feel warm any more. In the winter that may only be 3-5 minutes. In the summer and temps are above 90, it may take 7 to 10 minutes.
Back to top
View user's profile
44marty
Super Member
Super Member


Joined: Mar 20, 2009
Posts: 775
Location: Cheshire, MA; USA

PostPosted: Fri Jul 23, 2010 4:24 pm    Post subject: Re: OCW !!! Reply with quote

chambered221 wrote:
I'd be interested in seeing where 54.5 would have landed !!! (If a safe load)

Slim, the shoot one load one target thing is more about heat distribution than a clean or dirty barrel.

What's your procedure for dealing with barrel heat ???

Firing round robin (one of each charge weight) also helps take out other variables like change in the wind value and changing light conditions, etc.

_________________
_____________________________________

The strength of the wolf is in the pack; the strength of the pack is in the wolf. ~ R. Kipling

I LOVE YOU, LADY LUCK !!!
Back to top
View user's profile Photo Gallery
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 :.