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
My 338 Sherman Shortmag
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="tim_w" data-source="post: 2617547" data-attributes="member: 11132"><p>Not sure if you recall but we have spoken over the last 2-3 yrs my ideal setup was a 375 and was waiting till you got the mega in. </p><p></p><p>The one reason I planned switching to 338 as my first mega build was I figured it would take quite some time to get 375 dies. I can quickly grab a 22" carbon Proof 1-10 as they are in stock at numerous places. Tikka reciever and the rest of the parts just as quickly. But I have had custom dies take over 6 months in recent times. With the 338 you have everything in stock and I have access to Senedro profile 338 9.3tw Bartlein or 9.5tw Brux.</p><p></p><p>I know a standard wsm necked up to .375 will send a 270gr TSX to 2750 from a 22" barrel using Rel15 in a tuned accuracy node. Given the hardness and strength of ADG brass adding in Sherminizing (blowing the taper out and 40° shoulder) that alone will allow it to hold a good deal more pressure. Add in the extra powder capacity even more so. My guess would be 100-150 fps over the standard wsm load quoted before. Rich is that about what to expect? My estimate given typical efficient increase with increase in caliber bore size is a .375 270gr should reach the same vel as a .338 250gr in 22" barrels i.e 2950.</p><p></p><p> This WAS an easy decision before I saw the performance of the 338 Mega and ready access dies....Grrrrrrr.</p><p></p><p>I have a dedicated LR build planned for next yr.... 7mm mega 26"</p></blockquote><p></p>
[QUOTE="tim_w, post: 2617547, member: 11132"] Not sure if you recall but we have spoken over the last 2-3 yrs my ideal setup was a 375 and was waiting till you got the mega in. The one reason I planned switching to 338 as my first mega build was I figured it would take quite some time to get 375 dies. I can quickly grab a 22" carbon Proof 1-10 as they are in stock at numerous places. Tikka reciever and the rest of the parts just as quickly. But I have had custom dies take over 6 months in recent times. With the 338 you have everything in stock and I have access to Senedro profile 338 9.3tw Bartlein or 9.5tw Brux. I know a standard wsm necked up to .375 will send a 270gr TSX to 2750 from a 22" barrel using Rel15 in a tuned accuracy node. Given the hardness and strength of ADG brass adding in Sherminizing (blowing the taper out and 40° shoulder) that alone will allow it to hold a good deal more pressure. Add in the extra powder capacity even more so. My guess would be 100-150 fps over the standard wsm load quoted before. Rich is that about what to expect? My estimate given typical efficient increase with increase in caliber bore size is a .375 270gr should reach the same vel as a .338 250gr in 22" barrels i.e 2950. This WAS an easy decision before I saw the performance of the 338 Mega and ready access dies....Grrrrrrr. I have a dedicated LR build planned for next yr.... 7mm mega 26" [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
My 338 Sherman Shortmag
Top