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
300 g. SMK Terminal Performance
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="Long Time Long Ranger" data-source="post: 368752" data-attributes="member: 505"><p>bgouin, Like Broz said it is a very easy conversion to the 338-378 or Lapua if you have a mk 5 action. All the mk 5 magnum actions are the same. The ones off the 378 case just have the bolt face opened up more with the 378 magazine box in there and the bolt throw lengthened. I have seven 338-378's and one 338 Lapua imp (sold) and all of them started life as a standard mk 5 magnum action (257-340 wbys). </p><p></p><p>The 340 wby is a very capable round and I have taken elk beyond 1000 yards with mine. Back when the 250 sierra gameking came out it had the highest bc of any hunting bullet and that is what I took long range elk with early on. My 340 with a 28" barrel shoots them at 3056 fps with 7828 powder. Now the 250 accubond has a higher bc and when the 338's off the ultramag case only get in the 3100's with the 250 grain you see the 340 wby is very potent. </p><p></p><p>But if it were me I would do either the 338 lapua imp or the 338-378 wby off your action. My pet 338-378 shoots the 300 grain at 3050 fps, the 250 grain at 3300 fps and the 200 grain at over 3600 fps out of a 28" barrel. I have taken many trophy animals with it for many years.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 368752, member: 505"] bgouin, Like Broz said it is a very easy conversion to the 338-378 or Lapua if you have a mk 5 action. All the mk 5 magnum actions are the same. The ones off the 378 case just have the bolt face opened up more with the 378 magazine box in there and the bolt throw lengthened. I have seven 338-378's and one 338 Lapua imp (sold) and all of them started life as a standard mk 5 magnum action (257-340 wbys). The 340 wby is a very capable round and I have taken elk beyond 1000 yards with mine. Back when the 250 sierra gameking came out it had the highest bc of any hunting bullet and that is what I took long range elk with early on. My 340 with a 28" barrel shoots them at 3056 fps with 7828 powder. Now the 250 accubond has a higher bc and when the 338's off the ultramag case only get in the 3100's with the 250 grain you see the 340 wby is very potent. But if it were me I would do either the 338 lapua imp or the 338-378 wby off your action. My pet 338-378 shoots the 300 grain at 3050 fps, the 250 grain at 3300 fps and the 200 grain at over 3600 fps out of a 28" barrel. I have taken many trophy animals with it for many years. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 g. SMK Terminal Performance
Top