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
375 Cheytac....getting ready!
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="royinidaho" data-source="post: 918387" data-attributes="member: 2011"><p>The 375 SnipeTac and 375 Allen Mag are nearly, if not, identical improved Cheytacs.</p><p></p><p>A considerable amount of MV is gained. i.e., 350 SMK @ 3250 MV w/142.5 gr Retumbo.</p><p></p><p>Its a bit hard on Jamison brass. I reduced to 141.5 gr to reduce problems. Velocity still well above 3200. @ 41*F and below she's pretty sweet.</p><p></p><p>Will switch to Bertram brass one of these days and get'r back up to the higher velocity. But so far I don't see a need.</p><p></p><p>I'm running the 375 AM.</p><p></p><p>I don't have enough data yet to determine the temperature sensitivity of Retumbo but the full charge was a bit much in warm Montana weather. The main consideration seems to be neck thickness of Jamison brass vs that of Bertram brass as the reamer was designed with a brass similar to Bertram. Wild cats are funny that way. . .</p><p></p><p>Just an oh by the way, a 370 or a bit better weigh offering sure would be sweet. It would make the 375 extreme mags stand up to expectations over 338 extreme mags. Just my tho'ts. . .</p></blockquote><p></p>
[QUOTE="royinidaho, post: 918387, member: 2011"] The 375 SnipeTac and 375 Allen Mag are nearly, if not, identical improved Cheytacs. A considerable amount of MV is gained. i.e., 350 SMK @ 3250 MV w/142.5 gr Retumbo. Its a bit hard on Jamison brass. I reduced to 141.5 gr to reduce problems. Velocity still well above 3200. @ 41*F and below she's pretty sweet. Will switch to Bertram brass one of these days and get'r back up to the higher velocity. But so far I don't see a need. I'm running the 375 AM. I don't have enough data yet to determine the temperature sensitivity of Retumbo but the full charge was a bit much in warm Montana weather. The main consideration seems to be neck thickness of Jamison brass vs that of Bertram brass as the reamer was designed with a brass similar to Bertram. Wild cats are funny that way. . . Just an oh by the way, a 370 or a bit better weigh offering sure would be sweet. It would make the 375 extreme mags stand up to expectations over 338 extreme mags. Just my tho'ts. . . [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
375 Cheytac....getting ready!
Top