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
Rifles, Bullets, Barrels & Ballistics
Why is 20” ok for 7 PRC but not 7 Rem mag?
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="iiiNelson" data-source="post: 2766993" data-attributes="member: 113766"><p>Is it possible with the availability of affordable chronographs, more education on chamber dimensions, more information on powder burn rates, etc. that people are more educated (potentially anyway) on what used to be passed around as fact when it was nothing more than "urban legends?" Is it possible that people have access to more data and that they can verify data themselves (to some extent) versus just using box values for velocity? It used to be said across the board that you lose 50fps per barrel inch lost or that anything other than a 26" barrel in a magnum was "useless." With chronograph data we can assess that in some cases it's more like 20-30fps lost and with some it's 60-80fps lost. Sometimes it's just about the individual barrel and chamber IMO.</p><p></p><p>There are many 22" or 24" 7RM rifles available because many have decided the loss in velocity wasn't a huge trade off for their individual purposes. If you want to continue with the 7RM it's been killing well for 60+ years. I think it's less about attacking the introduction of the 7 PRC than it is using whatever you want that fits your purposes. Nothing wrong with either.</p></blockquote><p></p>
[QUOTE="iiiNelson, post: 2766993, member: 113766"] Is it possible with the availability of affordable chronographs, more education on chamber dimensions, more information on powder burn rates, etc. that people are more educated (potentially anyway) on what used to be passed around as fact when it was nothing more than “urban legends?” Is it possible that people have access to more data and that they can verify data themselves (to some extent) versus just using box values for velocity? It used to be said across the board that you lose 50fps per barrel inch lost or that anything other than a 26” barrel in a magnum was “useless.” With chronograph data we can assess that in some cases it’s more like 20-30fps lost and with some it’s 60-80fps lost. Sometimes it’s just about the individual barrel and chamber IMO. There are many 22” or 24” 7RM rifles available because many have decided the loss in velocity wasn’t a huge trade off for their individual purposes. If you want to continue with the 7RM it’s been killing well for 60+ years. I think it’s less about attacking the introduction of the 7 PRC than it is using whatever you want that fits your purposes. Nothing wrong with either. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why is 20” ok for 7 PRC but not 7 Rem mag?
Top