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Hunting
Long Range Hunting & Shooting
Performance of SMK HPBT 190 gr
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<blockquote data-quote="Calvin45" data-source="post: 2778382" data-attributes="member: 109862"><p>Hi there! </p><p></p><p>I can attest from what my personal experience that hornady's 225 grain eld match stabilizes great from my 10 twist .300 win mag. Hornady's Doppler BC number of .777 was determined from a 10 twist with this bullet, number goes up a bit from a faster twist but .77 is hard to beat if your rifle likes them, which mine does. </p><p></p><p>Another serious contender is the sierra 200 grain smk BUT there are two different 200 grain smks…I'm talking about the newer one. </p><p></p><p><strong>PART NUMBER 2231</strong></p><p></p><p>has a bc of .71 at over 2000 fps, maybe a tad lower from a 10 twist </p><p></p><p>Sierra explicitly does state 1:9 twist or faster. HOWEVER, I emailed them directly to inquire about their viability in my rifle and they actually replied (very quickly too) that the 1:9 twist requirement ensure stability at .308 Winchester velocity at sea level. They assured me that at full power 300 win mag velocity at my 1100 feet elevation (not that much) I would have zero stability issues <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>That's a great bc to weight ratio, and with the very short bearing surface and subsequent lower pressure 3000 feet per second is very possible. I actually just bought some but have not yet tested them </p><p></p><p>I drive my 225 elds to 2760 at the moment but will be working up a new load soon NOW THAT THEY WENT AND DISCONTINUED MY BELOVED IMR 8133 <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><p></p><p>Food for thought, hope it helps, and hello from Saskatchewan, Canada <img class="smilie smilie--emoji" loading="lazy" alt="🙂" title="Slightly smiling face :slight_smile:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" data-shortname=":slight_smile:" /></p></blockquote><p></p>
[QUOTE="Calvin45, post: 2778382, member: 109862"] Hi there! I can attest from what my personal experience that hornady’s 225 grain eld match stabilizes great from my 10 twist .300 win mag. Hornady’s Doppler BC number of .777 was determined from a 10 twist with this bullet, number goes up a bit from a faster twist but .77 is hard to beat if your rifle likes them, which mine does. Another serious contender is the sierra 200 grain smk BUT there are two different 200 grain smks…I’m talking about the newer one. [B]PART NUMBER 2231[/B] has a bc of .71 at over 2000 fps, maybe a tad lower from a 10 twist Sierra explicitly does state 1:9 twist or faster. HOWEVER, I emailed them directly to inquire about their viability in my rifle and they actually replied (very quickly too) that the 1:9 twist requirement ensure stability at .308 Winchester velocity at sea level. They assured me that at full power 300 win mag velocity at my 1100 feet elevation (not that much) I would have zero stability issues :) That’s a great bc to weight ratio, and with the very short bearing surface and subsequent lower pressure 3000 feet per second is very possible. I actually just bought some but have not yet tested them I drive my 225 elds to 2760 at the moment but will be working up a new load soon NOW THAT THEY WENT AND DISCONTINUED MY BELOVED IMR 8133 😑 Food for thought, hope it helps, and hello from Saskatchewan, Canada 🙂 [/QUOTE]
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Performance of SMK HPBT 190 gr
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