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
Chatting and General Stuff
General Discussion
500 round update LSR
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="Centre Punch" data-source="post: 73325" data-attributes="member: 3048"><p>Hi Rimfire,</p><p>I noticed the same pressure problem with H4350 last week whilst trying to get a 185grn Scenar to do 3000fps out of my 24" 300wsm.</p><p></p><p>A mid range charge of 62.5grns gave 2850fps with no pressure signs but a 1 grain increase had me knocking the bolt up with a rubber mallet. Sierra's max charge was 66grns.</p><p></p><p>A switch to 70grns of RE 22 eliminated the pressure problems but no increase in velocity.</p><p>71grns took the velocity up to an average of 2894fps again without any pressure signs but at this point the experiment was abandoned as a 71.5 grn charge was starting to travel up the case neck.</p><p></p><p>Acuracy with the lesser load of H4350 was sub 1/2 moa as was the 63.5grn load.</p><p>Acuracy with RE 22 went off to 3/4 to 1 1/4 moa for five 5 shot groups, maybe in my gun this cartridge works at its best on or very close to maximum pressure.</p><p></p><p>A compressed load of 72.5grns RE 22 had 155grn Scenars travelling at 3190fps with no signs of pressure but again poor accuracy in the 1 to 1 1/4 moa bracket.</p><p></p><p>Ian.</p><p></p><p>"I mean't to shoot the pike but the duck got in the way"</p></blockquote><p></p>
[QUOTE="Centre Punch, post: 73325, member: 3048"] Hi Rimfire, I noticed the same pressure problem with H4350 last week whilst trying to get a 185grn Scenar to do 3000fps out of my 24" 300wsm. A mid range charge of 62.5grns gave 2850fps with no pressure signs but a 1 grain increase had me knocking the bolt up with a rubber mallet. Sierra's max charge was 66grns. A switch to 70grns of RE 22 eliminated the pressure problems but no increase in velocity. 71grns took the velocity up to an average of 2894fps again without any pressure signs but at this point the experiment was abandoned as a 71.5 grn charge was starting to travel up the case neck. Acuracy with the lesser load of H4350 was sub 1/2 moa as was the 63.5grn load. Acuracy with RE 22 went off to 3/4 to 1 1/4 moa for five 5 shot groups, maybe in my gun this cartridge works at its best on or very close to maximum pressure. A compressed load of 72.5grns RE 22 had 155grn Scenars travelling at 3190fps with no signs of pressure but again poor accuracy in the 1 to 1 1/4 moa bracket. Ian. "I mean't to shoot the pike but the duck got in the way" [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Chatting and General Stuff
General Discussion
500 round update LSR
Top