Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Help me interpret load data - First post
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="jtvann" data-source="post: 2449362" data-attributes="member: 121304"><p>Hi all,</p><p></p><p>This is my first post. Forgive the long post right out of the gate. Trying to include all pertinent info. </p><p></p><p>I'm trying to work up a completely new load. I'm shooting a 300 wsm, just a plain stock Remington 700. I'm using new ADG brass, 175 Barnes LRX bullets, Ramshot Hunter powder, and CCI #34 primers. Rounds are loaded to 2.175 CBTO to make them fit my magazine. That's close to 100 thousands jump. </p><p></p><p>I went out about 2 weeks ago to try to find pressure signs or where my max charge would be. I stuck with Barnes loading data and tested 1 round at half grain increments from 65-72.5 grains. I never saw pressure signs, but felt the bolt lift a litter heavier beyond 71.5 grains. I was using a magnetospeed sporter chronograph to try and narrow in on a velocity node as well. Here's the data from my first test:</p><p></p><p>65-2775</p><p>65.5- 2828</p><p>66-2877</p><p>66.5-2899</p><p>67-2919</p><p>67.5-2980</p><p>68-2978</p><p>68.5-2987</p><p>69-2996</p><p>69.5- 3029</p><p>70-3065</p><p>70.5- 3062</p><p>71- 3077</p><p>71.5- 3105</p><p>72- 3120</p><p>72.5- 3167</p><p></p><p>I tested around 70 grains next. What I didn't factor in, and a major question I have is with temp sensitivity. It was about 55 degrees when I ran my first pressure signs / velocity test. </p><p></p><p>Next I tested 3 rounds each at the following, but the temperature was around 35-40 degrees. </p><p></p><p>70.4 - 3009, 3014, 3011</p><p>70.6 - 3011, 3023, 3032</p><p>70.8 - 3004, 3020, 3024</p><p></p><p>Today I tested 3 rounds each at the following, with temp close to 60 degrees</p><p></p><p>69.8- 3059, 3063, 3050</p><p>70- 3077, 3076, 3073</p><p>70.2- 3091, 3083, 3063</p><p></p><p>The temp sensitivity has got me stumped. I don't know what to do next. </p><p></p><p>Dumb question …Is a velocity node specific to a certain velocity? Meaning I will have to learn what the temp swing is and then load various rounds for what the given temp is on a particular day. </p><p></p><p>Any help would be appreciated.</p></blockquote><p></p>
[QUOTE="jtvann, post: 2449362, member: 121304"] Hi all, This is my first post. Forgive the long post right out of the gate. Trying to include all pertinent info. I’m trying to work up a completely new load. I’m shooting a 300 wsm, just a plain stock Remington 700. I’m using new ADG brass, 175 Barnes LRX bullets, Ramshot Hunter powder, and CCI #34 primers. Rounds are loaded to 2.175 CBTO to make them fit my magazine. That’s close to 100 thousands jump. I went out about 2 weeks ago to try to find pressure signs or where my max charge would be. I stuck with Barnes loading data and tested 1 round at half grain increments from 65-72.5 grains. I never saw pressure signs, but felt the bolt lift a litter heavier beyond 71.5 grains. I was using a magnetospeed sporter chronograph to try and narrow in on a velocity node as well. Here’s the data from my first test: 65-2775 65.5- 2828 66-2877 66.5-2899 67-2919 67.5-2980 68-2978 68.5-2987 69-2996 69.5- 3029 70-3065 70.5- 3062 71- 3077 71.5- 3105 72- 3120 72.5- 3167 I tested around 70 grains next. What I didn’t factor in, and a major question I have is with temp sensitivity. It was about 55 degrees when I ran my first pressure signs / velocity test. Next I tested 3 rounds each at the following, but the temperature was around 35-40 degrees. 70.4 - 3009, 3014, 3011 70.6 - 3011, 3023, 3032 70.8 - 3004, 3020, 3024 Today I tested 3 rounds each at the following, with temp close to 60 degrees 69.8- 3059, 3063, 3050 70- 3077, 3076, 3073 70.2- 3091, 3083, 3063 The temp sensitivity has got me stumped. I don’t know what to do next. Dumb question …Is a velocity node specific to a certain velocity? Meaning I will have to learn what the temp swing is and then load various rounds for what the given temp is on a particular day. Any help would be appreciated. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Help me interpret load data - First post
Top