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
7mm vs. 7mm ultra mag?
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="J E Custom" data-source="post: 263452" data-attributes="member: 2736"><p>Thanks for the complements but there is a lot more that I can learn before I go to the Happy</p><p> hunting ground. and I can only speak from over 50 years of experance and you are right</p><p>about smaller bullets and bigger cases.</p><p></p><p>Hear is an example= Take a 375 H&H with a 275gr bullet(The standard bullet used) and place</p><p>70grs of powder behind it and you will get 2600 ft/sec velocity and who knows how many </p><p>rounds you can run through it 15000+.</p><p></p><p>Now take the same 375 H&H case and neck it down to 7 mm and blow the shoulder out and </p><p>forward into a wildcat like the 7mm STW ( most belted wildcats started life as a 375 and were</p><p>changed to personalize them ) and you have a barrel burner because you have made it into</p><p>an over boar cartrige and barrel life will not be as long.</p><p></p><p>Barrel life is determined by many factors so to say a barrel only has 1000 rounds in it</p><p>would be unfair and just a guess under the worst case scenario.</p><p></p><p>I would think that the 7 WSM would have less barrel life than a 300 WSM but not twice or three</p><p>times less because of the smaller and faster bullets.</p><p></p><p>If a barrel is kept clean and carbon is removed as often as possible barrel life will be improved</p><p>and accuracy maintained longer.</p><p></p><p>The 308 is a prime example of the reverse because most match shooters use the 168gr + bullets</p><p>and velocity is 26 to 2800 ft/sec using around 42grs of powder and barrels last 20,000 +rounds</p><p>before any loss of accuracy.</p><p></p><p>The first thing I do when a friend brings me his favorite rifle complaining about how the barrel</p><p>is shot out and will not group any more is give it a GOOD back to bare metal CLEANING and </p><p>most of the time they shoot just like they used to.</p><p></p><p>And be carefull not to believe everthing you read about claimes of unbelievable high BCs,</p><p>velocites,Barrel life ETC because if it seems to good to be true it probably is not true.</p><p></p><p>By the way ANY Banded Bullet of the same weight and dia. will be slightly faster than a full</p><p>bore dia. bullet because of less bearing surface just like flat based bullets have longer</p><p>bodys than boat tailed bullets of the same weight and dia. increasing bearing surface</p><p>and slowing velocity slightly (a vary small % ) so this is not something new and wonderful</p><p>and may have a downside in some applications.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 263452, member: 2736"] Thanks for the complements but there is a lot more that I can learn before I go to the Happy hunting ground. and I can only speak from over 50 years of experance and you are right about smaller bullets and bigger cases. Hear is an example= Take a 375 H&H with a 275gr bullet(The standard bullet used) and place 70grs of powder behind it and you will get 2600 ft/sec velocity and who knows how many rounds you can run through it 15000+. Now take the same 375 H&H case and neck it down to 7 mm and blow the shoulder out and forward into a wildcat like the 7mm STW ( most belted wildcats started life as a 375 and were changed to personalize them ) and you have a barrel burner because you have made it into an over boar cartrige and barrel life will not be as long. Barrel life is determined by many factors so to say a barrel only has 1000 rounds in it would be unfair and just a guess under the worst case scenario. I would think that the 7 WSM would have less barrel life than a 300 WSM but not twice or three times less because of the smaller and faster bullets. If a barrel is kept clean and carbon is removed as often as possible barrel life will be improved and accuracy maintained longer. The 308 is a prime example of the reverse because most match shooters use the 168gr + bullets and velocity is 26 to 2800 ft/sec using around 42grs of powder and barrels last 20,000 +rounds before any loss of accuracy. The first thing I do when a friend brings me his favorite rifle complaining about how the barrel is shot out and will not group any more is give it a GOOD back to bare metal CLEANING and most of the time they shoot just like they used to. And be carefull not to believe everthing you read about claimes of unbelievable high BCs, velocites,Barrel life ETC because if it seems to good to be true it probably is not true. By the way ANY Banded Bullet of the same weight and dia. will be slightly faster than a full bore dia. bullet because of less bearing surface just like flat based bullets have longer bodys than boat tailed bullets of the same weight and dia. increasing bearing surface and slowing velocity slightly (a vary small % ) so this is not something new and wonderful and may have a downside in some applications. J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
7mm vs. 7mm ultra mag?
Top