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
L.R. Rifle Reloads
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="rscott5028" data-source="post: 514749" data-attributes="member: 24624"><p>I'm pretty certain ALL powders are affected by temperature. </p><p> </p><p>Hodgdon Extreme powders are less affected than most. </p><p> </p><p>I compared H4831sc vs RL22 for my 7RM in weather ranging from 102F to 32F and H4831sc was far less affected. I don't have my data in front of me. But, I think there was something like a 25 fps drop in the avg mv for H4831sc and RL22 dropped around 150 fps. The std dev or accuracy wasn't really affected though. </p><p> </p><p>Whether or not you care about a 25 fps or 150 fps difference in MV will depend on how far you shoot. </p><p> </p><p>As suggested, use a chrony and record your data in summer and winter. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 514749, member: 24624"] I'm pretty certain ALL powders are affected by temperature. Hodgdon Extreme powders are less affected than most. I compared H4831sc vs RL22 for my 7RM in weather ranging from 102F to 32F and H4831sc was far less affected. I don't have my data in front of me. But, I think there was something like a 25 fps drop in the avg mv for H4831sc and RL22 dropped around 150 fps. The std dev or accuracy wasn't really affected though. Whether or not you care about a 25 fps or 150 fps difference in MV will depend on how far you shoot. As suggested, use a chrony and record your data in summer and winter. -- richard [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
L.R. Rifle Reloads
Top