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Rifles, Reloading, Optics, Equipment
Reloading
Hammer bullets
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<blockquote data-quote="RockyMtnMT" data-source="post: 1958087" data-attributes="member: 7999"><p>The bc thing again. It varies depending on the tightness of the bore. We see some rifles that run with higher bc than expected and some with lower and then once in a while one comes along that tanks the bc like the bullet is being shot backwards. It has to do with the tangent ogive and the fact that we cut the bullets .0005" over caliber. We do this to ensure sealing the barrel so that we still have great accuracy in loose bores and the radius drive bands (PDR) don't cause excessive pressure in tight barrels. We are currently working on a new ogive design that eliminates the engraving forward of the shoulder. We are almost settled on a design, just need to do a little more testing on a couple more variations of the design. This design will be a bit lighter for caliber than the current Hammer Hunter for the given twist, but we are seeing a significant increase in vel. In our 280 ai test rifles and 150g bullets we are seeing about 300 fps higher vel than expected for a conventional 150g bullet. Hoping to have some time to test in the next couple of weeks.</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1958087, member: 7999"] The bc thing again. It varies depending on the tightness of the bore. We see some rifles that run with higher bc than expected and some with lower and then once in a while one comes along that tanks the bc like the bullet is being shot backwards. It has to do with the tangent ogive and the fact that we cut the bullets .0005" over caliber. We do this to ensure sealing the barrel so that we still have great accuracy in loose bores and the radius drive bands (PDR) don't cause excessive pressure in tight barrels. We are currently working on a new ogive design that eliminates the engraving forward of the shoulder. We are almost settled on a design, just need to do a little more testing on a couple more variations of the design. This design will be a bit lighter for caliber than the current Hammer Hunter for the given twist, but we are seeing a significant increase in vel. In our 280 ai test rifles and 150g bullets we are seeing about 300 fps higher vel than expected for a conventional 150g bullet. Hoping to have some time to test in the next couple of weeks. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Hammer bullets
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