Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 215 gr 300 WM load.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="emp1953" data-source="post: 2947984" data-attributes="member: 71817"><p>Info on the Berger website suggests (to me anyway) that a lighter (thus shorter) bullet is recommended. Usually, longish bullets require a faster twist to provide acceptable stability. You could try dialing down the velocity a bit. Although instability many times is shown by holes on the target that aren't round. Your's are definitely still round.</p><p></p><p>Here's their recomendation chart for a 1:10 twist barrel</p><table style='width: 100%'><tr><td>Part #</td><td>Bullet Description</td><td>SG</td><td>G1 BC</td><td>G7 BC</td></tr><tr><td>30105</td><td>30 Caliber 175 Grain Match OTM Tactical</td><td>2.30</td><td>0.512</td><td>0.263</td></tr><tr><td>30107</td><td>30 Caliber 185 Grain Match Juggernaut OTM Tactical</td><td>1.98</td><td>0.552</td><td>0.283</td></tr><tr><td>30407</td><td>30 Caliber 150 Grain Match FB Target</td><td>2.54</td><td>0.393</td><td>0.201</td></tr><tr><td>30408</td><td>30 Caliber 155 Grain Match VLD Target</td><td>2.10</td><td>0.464</td><td>0.238</td></tr><tr><td>30410</td><td>30 Caliber 168 Grain Match VLD Target</td><td>2.26</td><td>0.507</td><td>0.260</td></tr><tr><td>30412</td><td>30 Caliber 175 Grain Match VLD Target</td><td>1.92</td><td>0.512</td><td>0.262</td></tr><tr><td>30413</td><td>30 Caliber 185 Grain Match VLD Target</td><td>1.86</td><td>0.543</td><td>0.278</td></tr><tr><td>30415</td><td>30 Caliber 210 Grain Match VLD Target</td><td>1.81</td><td>0.621</td><td>0.318</td></tr><tr><td>30416</td><td>30 Caliber 155.5 Grain Match FULLBORE Target</td><td>2.22</td><td>0.473</td><td>0.242</td></tr><tr><td>30418</td><td>30 Caliber 185 Grain Match Juggernaut Target</td><td>2.02</td><td>0.555</td><td>0.284</td></tr><tr><td>30419</td><td>30 Caliber 210 Grain Match Long Range BT Target</td><td>1.80</td><td>0.625</td><td>0.320</td></tr><tr><td>30420</td><td>30 Caliber 175 Grain Match Long Range BT Target</td><td>2.04</td><td>0.512</td><td>0.262</td></tr><tr><td>30421</td><td>30 Caliber 115 Grain Match FB Target</td><td>3.49</td><td>0.289</td><td>0.148</td></tr><tr><td>30424</td><td>30 Caliber 185 Grain Match Hybrid Target</td><td>1.73</td><td>0.576</td><td>0.295</td></tr><tr><td>30425</td><td>30 Caliber 168 Grain Match Hybrid Target</td><td>2.08</td><td>0.515</td><td>0.264</td></tr><tr><td>30426</td><td>30 Caliber 155 Grain Match Hybrid Target</td><td>1.99</td><td>0.478</td><td>0.245</td></tr><tr><td>30427</td><td>30 Caliber 200 Grain Match Hybrid Target</td><td>1.62</td><td>0.616</td><td>0.316</td></tr><tr><td>30417</td><td>30 Caliber 200.20X gr Hybrid Target</td><td>1.56</td><td>0.640</td><td>0.328</td></tr><tr><td>30508</td><td>30 Caliber 155 Grain Match Grade VLD Hunting</td><td>2.23</td><td>0.464</td><td>0.238</td></tr><tr><td>30510</td><td>30 Caliber 168 Grain Match Grade VLD Hunting</td><td>2.21</td><td>0.498</td><td>0.255</td></tr><tr><td>30512</td><td>30 Caliber 175 Grain Match Grade VLD Hunting</td><td>1.98</td><td>0.518</td><td>0.265</td></tr><tr><td>30513</td><td>30 Caliber 185 Grain Match Grade VLD Hunting</td><td>2.16</td><td>0.558</td><td>0.286</td></tr><tr><td>30514</td><td>30 Caliber 190 Grain Match Grade VLD Hunting</td><td>1.96</td><td>0.566</td><td>0.290</td></tr><tr><td>30515</td><td>30 Caliber 210 Grain Match Grade VLD Hunting</td><td>1.77</td><td>0.625</td><td>0.320</td></tr><tr><td>30570</td><td>30 Caliber 168 Grain Match Grade Classic Hunter</td><td>2.38</td><td>0.489</td><td>0.251</td></tr><tr><td>30571</td><td>30 Caliber 185 Grain Match Grade Classic Hunter</td><td>2.16</td><td>0.533</td><td>0.273</td></tr></table><p></p><p></p><p>It looks like the Ballistic Coefficient drops down 5% to 10% due to degraded stability.</p><p></p><p>Take a look at this thread on this forum #7</p><p></p><p>[URL unfurl="true"]https://www.longrangehunting.com/threads/berger-215s-in-1-11-twist-300-wm.146672/#post-1059574[/URL]</p></blockquote><p></p>
[QUOTE="emp1953, post: 2947984, member: 71817"] Info on the Berger website suggests (to me anyway) that a lighter (thus shorter) bullet is recommended. Usually, longish bullets require a faster twist to provide acceptable stability. You could try dialing down the velocity a bit. Although instability many times is shown by holes on the target that aren't round. Your's are definitely still round. Here's their recomendation chart for a 1:10 twist barrel [TABLE] [TR] [TD]Part #[/TD] [TD]Bullet Description[/TD] [TD]SG[/TD] [TD]G1 BC[/TD] [TD]G7 BC[/TD] [/TR] [TR] [TD]30105[/TD] [TD]30 Caliber 175 Grain Match OTM Tactical[/TD] [TD]2.30[/TD] [TD]0.512[/TD] [TD]0.263[/TD] [/TR] [TR] [TD]30107[/TD] [TD]30 Caliber 185 Grain Match Juggernaut OTM Tactical[/TD] [TD]1.98[/TD] [TD]0.552[/TD] [TD]0.283[/TD] [/TR] [TR] [TD]30407[/TD] [TD]30 Caliber 150 Grain Match FB Target[/TD] [TD]2.54[/TD] [TD]0.393[/TD] [TD]0.201[/TD] [/TR] [TR] [TD]30408[/TD] [TD]30 Caliber 155 Grain Match VLD Target[/TD] [TD]2.10[/TD] [TD]0.464[/TD] [TD]0.238[/TD] [/TR] [TR] [TD]30410[/TD] [TD]30 Caliber 168 Grain Match VLD Target[/TD] [TD]2.26[/TD] [TD]0.507[/TD] [TD]0.260[/TD] [/TR] [TR] [TD]30412[/TD] [TD]30 Caliber 175 Grain Match VLD Target[/TD] [TD]1.92[/TD] [TD]0.512[/TD] [TD]0.262[/TD] [/TR] [TR] [TD]30413[/TD] [TD]30 Caliber 185 Grain Match VLD Target[/TD] [TD]1.86[/TD] [TD]0.543[/TD] [TD]0.278[/TD] [/TR] [TR] [TD]30415[/TD] [TD]30 Caliber 210 Grain Match VLD Target[/TD] [TD]1.81[/TD] [TD]0.621[/TD] [TD]0.318[/TD] [/TR] [TR] [TD]30416[/TD] [TD]30 Caliber 155.5 Grain Match FULLBORE Target[/TD] [TD]2.22[/TD] [TD]0.473[/TD] [TD]0.242[/TD] [/TR] [TR] [TD]30418[/TD] [TD]30 Caliber 185 Grain Match Juggernaut Target[/TD] [TD]2.02[/TD] [TD]0.555[/TD] [TD]0.284[/TD] [/TR] [TR] [TD]30419[/TD] [TD]30 Caliber 210 Grain Match Long Range BT Target[/TD] [TD]1.80[/TD] [TD]0.625[/TD] [TD]0.320[/TD] [/TR] [TR] [TD]30420[/TD] [TD]30 Caliber 175 Grain Match Long Range BT Target[/TD] [TD]2.04[/TD] [TD]0.512[/TD] [TD]0.262[/TD] [/TR] [TR] [TD]30421[/TD] [TD]30 Caliber 115 Grain Match FB Target[/TD] [TD]3.49[/TD] [TD]0.289[/TD] [TD]0.148[/TD] [/TR] [TR] [TD]30424[/TD] [TD]30 Caliber 185 Grain Match Hybrid Target[/TD] [TD]1.73[/TD] [TD]0.576[/TD] [TD]0.295[/TD] [/TR] [TR] [TD]30425[/TD] [TD]30 Caliber 168 Grain Match Hybrid Target[/TD] [TD]2.08[/TD] [TD]0.515[/TD] [TD]0.264[/TD] [/TR] [TR] [TD]30426[/TD] [TD]30 Caliber 155 Grain Match Hybrid Target[/TD] [TD]1.99[/TD] [TD]0.478[/TD] [TD]0.245[/TD] [/TR] [TR] [TD]30427[/TD] [TD]30 Caliber 200 Grain Match Hybrid Target[/TD] [TD]1.62[/TD] [TD]0.616[/TD] [TD]0.316[/TD] [/TR] [TR] [TD]30417[/TD] [TD]30 Caliber 200.20X gr Hybrid Target[/TD] [TD]1.56[/TD] [TD]0.640[/TD] [TD]0.328[/TD] [/TR] [TR] [TD]30508[/TD] [TD]30 Caliber 155 Grain Match Grade VLD Hunting[/TD] [TD]2.23[/TD] [TD]0.464[/TD] [TD]0.238[/TD] [/TR] [TR] [TD]30510[/TD] [TD]30 Caliber 168 Grain Match Grade VLD Hunting[/TD] [TD]2.21[/TD] [TD]0.498[/TD] [TD]0.255[/TD] [/TR] [TR] [TD]30512[/TD] [TD]30 Caliber 175 Grain Match Grade VLD Hunting[/TD] [TD]1.98[/TD] [TD]0.518[/TD] [TD]0.265[/TD] [/TR] [TR] [TD]30513[/TD] [TD]30 Caliber 185 Grain Match Grade VLD Hunting[/TD] [TD]2.16[/TD] [TD]0.558[/TD] [TD]0.286[/TD] [/TR] [TR] [TD]30514[/TD] [TD]30 Caliber 190 Grain Match Grade VLD Hunting[/TD] [TD]1.96[/TD] [TD]0.566[/TD] [TD]0.290[/TD] [/TR] [TR] [TD]30515[/TD] [TD]30 Caliber 210 Grain Match Grade VLD Hunting[/TD] [TD]1.77[/TD] [TD]0.625[/TD] [TD]0.320[/TD] [/TR] [TR] [TD]30570[/TD] [TD]30 Caliber 168 Grain Match Grade Classic Hunter[/TD] [TD]2.38[/TD] [TD]0.489[/TD] [TD]0.251[/TD] [/TR] [TR] [TD]30571[/TD] [TD]30 Caliber 185 Grain Match Grade Classic Hunter[/TD] [TD]2.16[/TD] [TD]0.533[/TD] [TD]0.273[/TD] [/TR] [/TABLE] It looks like the Ballistic Coefficient drops down 5% to 10% due to degraded stability. Take a look at this thread on this forum #7 [URL unfurl="true"]https://www.longrangehunting.com/threads/berger-215s-in-1-11-twist-300-wm.146672/#post-1059574[/URL] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 215 gr 300 WM load.
Top