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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High Velocity Throat Erosion
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<blockquote data-quote="cabelasken" data-source="post: 2584260" data-attributes="member: 117774"><p>The longer bearing surface of the heavier bullet will create more temp instantaneously and I believe it will advance the wear on the barrel by 1) temp 2) more bearing or surface area wear. The higher velocity of the shorter and lighter bullet may have some effect on temp also, but being faster and the contact being even more instantaneous may not transfer as much heat. but I think most overbore cartridges wear the barrel somewhat from the unburned kernals being pushed thru the throat at an increasing velocity. I have seen some actually fall to the ground past the shooting bench, so these travel down the barrel doing damage also. Mark Brown of Brown Precision told me that barrels die from heat - no matter how it is occurs. I've gotten over 5000 rounds thru the original barrel in my 284 and another 6000 thru the shillen Mark installed in 2002. Just now groups have opened up to beyond 1/2 MOA.</p></blockquote><p></p>
[QUOTE="cabelasken, post: 2584260, member: 117774"] The longer bearing surface of the heavier bullet will create more temp instantaneously and I believe it will advance the wear on the barrel by 1) temp 2) more bearing or surface area wear. The higher velocity of the shorter and lighter bullet may have some effect on temp also, but being faster and the contact being even more instantaneous may not transfer as much heat. but I think most overbore cartridges wear the barrel somewhat from the unburned kernals being pushed thru the throat at an increasing velocity. I have seen some actually fall to the ground past the shooting bench, so these travel down the barrel doing damage also. Mark Brown of Brown Precision told me that barrels die from heat - no matter how it is occurs. I've gotten over 5000 rounds thru the original barrel in my 284 and another 6000 thru the shillen Mark installed in 2002. Just now groups have opened up to beyond 1/2 MOA. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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High Velocity Throat Erosion
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