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
Powder increase velocity drop?
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="Ridgerunner665" data-source="post: 1076755" data-attributes="member: 12660"><p>I experienced this with a 30-06 using H4350 and 168 grain bullets...others have experienced it too with the same components.</p><p></p><p>30-06, 168 grain Ballistic Tips, H4350, CCI BR2</p><p>55 grains = 2,699 fps</p><p>55.5 ....2,743 fps</p><p>56....2,737 fps</p><p>56.5....2,795 fps</p><p>57...2,789 fps</p><p>57.5......2,850 fps</p><p></p><p>EDITED TO ADD: Every charge thrown by hand then trickled by hand and weighed on an RCBS 505 beam scale...not thrown on an automated scale setup....so its not that.</p><p></p><p>This isn't chrono error...I repeated this with 3 different chrono's on 3 separate days and got essentially the same results, one of which was an Oehler 35P.</p><p></p><p>Below was done on a friends Oehler 35P...its 57.5 grains of H4350 in Lapua brass</p><p>2,862 fps average for 7 shots. ES was 18, SD was 7...EXCELLENT accuracy (range verified to 600 yards)...57 grains was complete garbage.</p><p></p><p>2,873</p><p>2,861</p><p>2,861</p><p>2,873</p><p>2,855</p><p>2,861</p><p>2,855</p><p></p><p>As to explaining it, I wish I was qualified to do that...but I'm not...inconsistent ignition is my as yet unproven hypothesis.</p></blockquote><p></p>
[QUOTE="Ridgerunner665, post: 1076755, member: 12660"] I experienced this with a 30-06 using H4350 and 168 grain bullets...others have experienced it too with the same components. 30-06, 168 grain Ballistic Tips, H4350, CCI BR2 55 grains = 2,699 fps 55.5 ....2,743 fps 56....2,737 fps 56.5....2,795 fps 57...2,789 fps 57.5......2,850 fps EDITED TO ADD: Every charge thrown by hand then trickled by hand and weighed on an RCBS 505 beam scale...not thrown on an automated scale setup....so its not that. This isn't chrono error...I repeated this with 3 different chrono's on 3 separate days and got essentially the same results, one of which was an Oehler 35P. Below was done on a friends Oehler 35P...its 57.5 grains of H4350 in Lapua brass 2,862 fps average for 7 shots. ES was 18, SD was 7...EXCELLENT accuracy (range verified to 600 yards)...57 grains was complete garbage. 2,873 2,861 2,861 2,873 2,855 2,861 2,855 As to explaining it, I wish I was qualified to do that...but I'm not...inconsistent ignition is my as yet unproven hypothesis. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Powder increase velocity drop?
Top