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
Hunting
Long Range Hunting & Shooting
How far with 180 grains and a 300 rum?
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="jwp475" data-source="post: 390625" data-attributes="member: 3776"><p>200 GR. NOS AB Hodgdon Retumbo .308" 3.600" 89.0 2904 56,400 PSI 95.5C 3048 62,400 PSI </p><p></p><p></p><p></p><p>200 GR. BAR XFB Hodgdon Retumbo .308" 3.555" 81.0 2852 56,200 PSI 86.0 2988 62,800 PSI </p><p></p><p></p><p></p><p> You didn't tell the whole story.. Yes the pressure is less for the 200 grain AccuBond by 400 PSI which is rather meaningless. But the powder charge for the AccuBond is 9.5 grains higher also. The top load for the AccuBond is 95.5 grains and the top load for the Barnes X is 86 grains. The difference in velocity is 60 FPS at near equal pressure. I am sure that you have chrono'ed enough rifle to know that the fastes load in one rifle is ofton the slower load in another rifle. The AccuBond load has an aditional 9.5 grains of powder, the added gas volume is needed in oroder to keep the pressure up</p><p></p><p> As I stated eairler reduce the friction and pressure drops and to get back to the csme velocity one must add more powder to regain the lost pressure</p></blockquote><p></p>
[QUOTE="jwp475, post: 390625, member: 3776"] 200 GR. NOS AB Hodgdon Retumbo .308" 3.600" 89.0 2904 56,400 PSI 95.5C 3048 62,400 PSI 200 GR. BAR XFB Hodgdon Retumbo .308" 3.555" 81.0 2852 56,200 PSI 86.0 2988 62,800 PSI You didn't tell the whole story.. Yes the pressure is less for the 200 grain AccuBond by 400 PSI which is rather meaningless. But the powder charge for the AccuBond is 9.5 grains higher also. The top load for the AccuBond is 95.5 grains and the top load for the Barnes X is 86 grains. The difference in velocity is 60 FPS at near equal pressure. I am sure that you have chrono'ed enough rifle to know that the fastes load in one rifle is ofton the slower load in another rifle. The AccuBond load has an aditional 9.5 grains of powder, the added gas volume is needed in oroder to keep the pressure up As I stated eairler reduce the friction and pressure drops and to get back to the csme velocity one must add more powder to regain the lost pressure [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
How far with 180 grains and a 300 rum?
Top