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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Browning X-bolts with fast twist rates...Any thoughts?
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<blockquote data-quote="RockyMtnMT" data-source="post: 1420645" data-attributes="member: 7999"><p>From terminal performance testing I am pretty stead fast in my data that bullet sg at a min of 1.5 is necessary for good terminal performance. Lead core bullets in fast twist barrels with high launch speeds can have trouble. I think the bullet industry has done a good job of producing bullets that are tougher now for the faster twist barrels running the high bc bullets. I don't test them so I can't say for sure, but I don't read about the problems anymore.</p><p></p><p>With our 227g Hammer Hunter it is quite long in order to get that heavy in a pure copper bullet. At 1.888" they require an 8" twist to be fully stable. These are a great bullet, but we don't sell much of them since they require the 8" twist. We may now start moving more of this bullet with factory rifles picking up the twist rate. The 8" twist in the 28cal rifles allows them to run our 177g Hammer Hunter. This bullet is physically the same size as the 195g Bergers, just to give an idea of how the lead vs copper weight compares. These long nosed Hammers are pretty devastating when they shed 3 or 4 large nose petals and still retain 70% of the original weight.</p><p></p><p>Cudos to Browning stepping up to start catching up with the custom market. Now we just need to see them extend the mag boxes to accommodate the long bullets that they are capable of shooting. Single shooting for long range hunting is not that big of a deal.</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1420645, member: 7999"] From terminal performance testing I am pretty stead fast in my data that bullet sg at a min of 1.5 is necessary for good terminal performance. Lead core bullets in fast twist barrels with high launch speeds can have trouble. I think the bullet industry has done a good job of producing bullets that are tougher now for the faster twist barrels running the high bc bullets. I don't test them so I can't say for sure, but I don't read about the problems anymore. With our 227g Hammer Hunter it is quite long in order to get that heavy in a pure copper bullet. At 1.888" they require an 8" twist to be fully stable. These are a great bullet, but we don't sell much of them since they require the 8" twist. We may now start moving more of this bullet with factory rifles picking up the twist rate. The 8" twist in the 28cal rifles allows them to run our 177g Hammer Hunter. This bullet is physically the same size as the 195g Bergers, just to give an idea of how the lead vs copper weight compares. These long nosed Hammers are pretty devastating when they shed 3 or 4 large nose petals and still retain 70% of the original weight. Cudos to Browning stepping up to start catching up with the custom market. Now we just need to see them extend the mag boxes to accommodate the long bullets that they are capable of shooting. Single shooting for long range hunting is not that big of a deal. Steve [/QUOTE]
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Browning X-bolts with fast twist rates...Any thoughts?
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