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
WARNING - 4955
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="Calvin45" data-source="post: 2775677" data-attributes="member: 109862"><p>ADDITIONAL DISCOVERY </p><p></p><p>not all these Barnes 75 x bullets are identical I just discovered.</p><p></p><p>I had got 6 boxes for a total of 300 bullets </p><p></p><p>They are very clearly (now) not from the same lot and they must have notably changed the tooling or something back in the day (as well, the projectile weights vary from74-76 grains over a sampling of 20 or so, certainly not as consistent as the more modern Barnes I've worked with. </p><p></p><p>I couldn't believe I hadn't noticed this earlier, great reminder to go ahead and be your crazy OCD overthinking overanalyzing selves and inspect everything. But there's two well defined projectile lengths in my batch that I all just dumped together when I was hbn treating them - by the way the hbn does seem to totally mitigate the copper fouling problem these bullets had a reputation for - </p><p></p><p> half of them are 0.932" inch long. And the other half are 0.913" inch long. </p><p></p><p>That's not nothing. </p><p></p><p>The longer bullets have a 0.439" bearing surface, a pointier nose, and a slightly but notably smaller hollow point. </p><p></p><p>The shorter bullets have an overall blunter profile, bigger HP, and a 0.420" bearing surface. </p><p></p><p>This could further explain what happened here. I can't prove it's what happened in hindsight but if you had been right on the edge of pressure to begin with and then like a bonehead jumped a whole grain in a .243 size case AND the next bullet happened to have 19 thousandths more bearing surface that would further amplify problems, for sure. </p><p></p><p>Or would it? What do y'all think? Does this matter at all? </p><p></p><p>Either way now I have bullets to sort into two piles <img class="smilie smilie--emoji" loading="lazy" alt="😑" title="Expressionless face :expressionless:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f611.png" data-shortname=":expressionless:" /></p></blockquote><p></p>
[QUOTE="Calvin45, post: 2775677, member: 109862"] ADDITIONAL DISCOVERY not all these Barnes 75 x bullets are identical I just discovered. I had got 6 boxes for a total of 300 bullets They are very clearly (now) not from the same lot and they must have notably changed the tooling or something back in the day (as well, the projectile weights vary from74-76 grains over a sampling of 20 or so, certainly not as consistent as the more modern Barnes I’ve worked with. I couldn’t believe I hadn’t noticed this earlier, great reminder to go ahead and be your crazy OCD overthinking overanalyzing selves and inspect everything. But there’s two well defined projectile lengths in my batch that I all just dumped together when I was hbn treating them - by the way the hbn does seem to totally mitigate the copper fouling problem these bullets had a reputation for - half of them are 0.932” inch long. And the other half are 0.913” inch long. That’s not nothing. The longer bullets have a 0.439” bearing surface, a pointier nose, and a slightly but notably smaller hollow point. The shorter bullets have an overall blunter profile, bigger HP, and a 0.420” bearing surface. This could further explain what happened here. I can’t prove it’s what happened in hindsight but if you had been right on the edge of pressure to begin with and then like a bonehead jumped a whole grain in a .243 size case AND the next bullet happened to have 19 thousandths more bearing surface that would further amplify problems, for sure. Or would it? What do y’all think? Does this matter at all? Either way now I have bullets to sort into two piles 😑 [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
WARNING - 4955
Top