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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
TSX ogive changed- no notice!
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<blockquote data-quote="Shootin4fun" data-source="post: 776035" data-attributes="member: 28741"><p>Has anyone noticed that Barnes recently changed the length and ogive of the .277 130gr TSX? The are now .070" shorter, and if you use the same die setting as used on their previous profile, they seat .020" deeper! I found this out the hard way by loading up a batch and then noticing the difference between the new batch and ones I had left from before.</p><p> </p><p>My big concern is that with a new profile, a new round of load development will be required. Seating the bullet deeper will result in higher pressure and there is a .020" greater jump to the lands. If I were pushing the limits of pressure with the previous profile, this deeper seating could be dangerous, no? And given that my load is now somewhat random, I have a batch of 20 expensive rounds that I have no idea of how they will shoot. I am getting all set for a pig hunt, and now don't have time and a place (out of the deep snow where I live) to test new loads, so I'm less than thrilled with Barnes at the moment.</p><p> </p><p>One important thing regarding the change is that BARNES KEPT THE SAME MODEL NUMBER (27742) AND THERE IS NO INDICATION THAT THE "NEW" TSX ARE DIFFERENT THAN PREVIOUS BOXES. THAT JUST SEEMS WRONG!</p><p> </p><p>In engineering, if we make any change to ANYTHING in a product, we must document it for everyone else downstream. Glad these Barnes guys are not working for NASA!</p></blockquote><p></p>
[QUOTE="Shootin4fun, post: 776035, member: 28741"] Has anyone noticed that Barnes recently changed the length and ogive of the .277 130gr TSX? The are now .070" shorter, and if you use the same die setting as used on their previous profile, they seat .020" deeper! I found this out the hard way by loading up a batch and then noticing the difference between the new batch and ones I had left from before. My big concern is that with a new profile, a new round of load development will be required. Seating the bullet deeper will result in higher pressure and there is a .020" greater jump to the lands. If I were pushing the limits of pressure with the previous profile, this deeper seating could be dangerous, no? And given that my load is now somewhat random, I have a batch of 20 expensive rounds that I have no idea of how they will shoot. I am getting all set for a pig hunt, and now don't have time and a place (out of the deep snow where I live) to test new loads, so I'm less than thrilled with Barnes at the moment. One important thing regarding the change is that BARNES KEPT THE SAME MODEL NUMBER (27742) AND THERE IS NO INDICATION THAT THE "NEW" TSX ARE DIFFERENT THAN PREVIOUS BOXES. THAT JUST SEEMS WRONG! In engineering, if we make any change to ANYTHING in a product, we must document it for everyone else downstream. Glad these Barnes guys are not working for NASA! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
TSX ogive changed- no notice!
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