HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: RichardZ
New Today: 0
New Yesterday: 1
Overall: 13126

People Online:
Members: 0
Visitors: 77
BOT: 1
Total: 78
Who Is Where:
 Visitors:
01: Home
02: Forums
03: Home
04: Forums
05: Your Account
06: Home
07: Forums
08: Forums
09: Forums
10: Home
11: Home
12: Your Account
13: Forums
14: Your Account
15: Forums
16: Home
17: Photo Albums
18: Forums
19: Forums
20: Forums
21: Home
22: Forums
23: Forums
24: Home
25: Home
26: Forums
27: Forums
28: Home
29: Your Account
30: Home
31: News
32: Home
33: Home
34: Photo Albums
35: Home
36: Forums
37: Forums
38: Forums
39: Forums
40: Your Account
41: Home
42: Photo Albums
43: Forums
44: Forums
45: Forums
46: Your Account
47: Home
48: Forums
49: Forums
50: Home
51: Home
52: Home
53: Your Account
54: Home
55: Forums
56: Photo Albums
57: Your Account
58: Home
59: Forums
60: Home
61: Your Account
62: Forums
63: Forums
64: Your Account
65: Forums
66: Forums
67: Forums
68: Forums
69: Home
70: Forums
71: Forums
72: Forums
73: Your Account
74: Forums
75: Forums
76: Forums
77: Home
  BOT:
01: Home

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 308
 Pictures: 2451
  · Views: 820725
  · Votes: 1316
  · Comments: 86
 

Deresonator
Discussions related to Guns and Firearms
Go to page Previous  1, 2
View previous topic :: View next topic  
Author Message
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8314
Location: Fort Worth TX

PostPosted: Wed Mar 16, 2016 5:58 am    Post subject: Re: Deresonator Reply with quote

Here are the results of 3-shot groups at different COALs with Hornady's 110 BTHP on top of 28.6gr of AA2200 in resized Hornady brass and 450 CCI primers. The only change between groups was the COAL which was stepped in 0.025" increments: 2.270", 2.295", 2.320", and 2.345" (which was 0.025" off the lands for this rifle). The longer two COALs are achievable with just the magazine modification. Interesting to see that a COAL shorter than 2.295" resulted in improved accuracy. I expected some variation but the average velocity was very consistent between the groups: 2715, 2719, 2697, and 2715 fps respectively.


_________________
"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 Photo Gallery
PaulS
Super Member
Super Member


Joined: Feb 18, 2006
Posts: 4330
Location: South-Eastern Washington - the State

PostPosted: Wed Mar 16, 2016 7:37 pm    Post subject: Re: Deresonator Reply with quote

Slim,
Have you ever taken that resulting great group and tested the load with "x" tenth grains of powder more and less than the "ideal" load to see if your load is still forgiving of a few tenths of a grain of powder?
If so, does the tuning by overall length make the load fussier?

_________________
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
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8314
Location: Fort Worth TX

PostPosted: Thu Mar 17, 2016 1:28 am    Post subject: Re: Deresonator Reply with quote

Paul, I haven't found tuning with COAL makes the load fussier. However, COAL adjustment is the last step in my load development process. The first step is finding out how forgiving a load is to a few tenths of a grain of powder. I use a single charge weight vs velocity ladder to determine a load's accuracy node. I typically use 0.3 to 0.5 grain increments and record every impact. If I find three that group within 1 moa or 2 that group close in a string of shots where the path of impacts reverse direction, I use the middle charge weight. It doesn't work all the time and you need to know your rifle is 1 moa capable or better. This saves me lots of bullets and I often develop a hunting load in 5 to 8 rounds. COAL from there is just adjusting the exit point of the bullet to be at the node. If a bullet-powder load isn't forgiving to begin with, I haven't found COAL adjustment will make it more forgiving.

_________________
"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


Last edited by slimjim on Thu Mar 17, 2016 10:44 am; edited 1 time in total
Back to top
View user's profile Photo Gallery
Dawgdad
Super Member
Super Member


Joined: Feb 08, 2006
Posts: 1065
Location: On the Prairie

PostPosted: Thu Mar 17, 2016 9:41 am    Post subject: Re: Deresonator Reply with quote

The biggest thing slim said that will waste a lot of bullets for some guys trying to reload..... Can you and your rifle shoot MOA or better.

I see a lot of guys that have horrible bench technique and always blame the load. The worst is when the blind pig finds a nut and shoots a single three shot group and says he has a winner and never shoots that load that well again... but keeps the 3 shot target in his pocket to show how good his rifle shoots.

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


Joined: Feb 18, 2006
Posts: 4330
Location: South-Eastern Washington - the State

PostPosted: Thu Mar 17, 2016 10:40 pm    Post subject: Re: Deresonator Reply with quote

Dawgdad,
I have seen those folks too. I test any "good" load over several months. I use five shot groups and use an aggregate target with a new overlay for each group. That gives me a pretty good idea of how a load shoots.

_________________
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
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 8314
Location: Fort Worth TX

PostPosted: Fri Mar 18, 2016 8:07 pm    Post subject: Re: Deresonator Reply with quote

As a hunter, its only the first shot, maybe the second, that counts. I keep the same target and shoot 2 shots at the same POI each range session over the year to build confidence in my load and its consistency. I know many like shooting multiple shot groups and I was talked originally taught to shot 5-shot groups but I'm done with 5-shot groups except if its a single shot for 5 consecutive range sessions. That is true accuracy to 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 Photo Gallery
Dawgdad
Super Member
Super Member


Joined: Feb 08, 2006
Posts: 1065
Location: On the Prairie

PostPosted: Sat Mar 19, 2016 5:56 am    Post subject: Re: Deresonator Reply with quote

For hunting loads, yes, a series of cold bore shots over several range sessions is the proof in the pudding.

For my target shooting I need a load that will shoot sub MOA after 66 rounds are down the pipe shooting the next 20 shots in 20 minutes or less. and also hold up to 10 shots in 60 seconds.

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


Joined: May 16, 2009
Posts: 8314
Location: Fort Worth TX

PostPosted: Sat Mar 19, 2016 7:56 am    Post subject: Re: Deresonator Reply with quote

Dawgdad wrote:
For my target shooting I need a load that will shoot sub MOA ... and also hold up to 10 shots in 60 seconds.

after 3 shots, my. 270 barrel is too hot to hold.

_________________
"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 Photo Gallery
Dawgdad
Super Member
Super Member


Joined: Feb 08, 2006
Posts: 1065
Location: On the Prairie

PostPosted: Sun Mar 20, 2016 6:22 am    Post subject: Re: Deresonator Reply with quote

Luckily - I do not hold the barrel, :). I have not had it cherry red but it gets warm. Actually, some days in the summer it gets too hot to touch just sitting in the sun... benefits of a heavy target barrel versus a light hunting profile. pretty thermally stable.

_________________
Alcohol, Tobacco and Firearms should be a convenience store, not a government agency...
Back to top
View user's profile Photo Gallery
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3455
Location: Lost for good !!!

PostPosted: Sun Mar 20, 2016 9:53 am    Post subject: Re: Deresonator Reply with quote

Dawgdad wrote:
I see a lot of guys that have horrible bench technique and always blame the load.

They also blame the gun !!!

It should also be noted the technique can change depending upon the type of rifle used.
My 10lb varmint rifle rides the bags pretty good with very little input from me. My Remington Model 7 requires a lot of consistent pressure to control movement and recoil.

_________________
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
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Gun & Firearm Discussions
Page 2 of 2
All times are GMT - 7 Hours
Go to page Previous  1, 2



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


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* :.