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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throating the 300 WSM for Hammers in a Tikka LA?
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<blockquote data-quote="Salmotrutta" data-source="post: 1775921" data-attributes="member: 110250"><p>Thanks everyone! I think I am narrowing down the throating based on a dummy round with a 181 hammer and a COL of 3.094".</p><p></p><p>Any thoughts on twist? I originally wanted to match my PRC with a 1:8 - however every stability calculator says thats overkill. Based on running Quickload with 181 and 199 hammers the edge goes to the 181's and with Barnes its the 175 LRX. I choose my bullet based on which weight retains 1200 ft-lbs AND 1800 fps the farthest. The ft-lbs number is arbitrary but it does allow you to compare bullets energy over longer ranges and select the one that works best for your application. 1800 fps is the number both Barnes and Hammer use as minimum required for reliable bullet performance.</p><p></p><p>The WSM in a short barrel just can't get heavier (> ~190g) mono bullets going fast enough to increase their effective range over the 181 Hammer - this leads me back to maybe a 1:9.5 twist?</p><p></p><p>Any thoughts, experiences or recommendations on twist? It looks like I should get those 181 hammers going to just a little over 3000 fps in a 20" barrel and my nominal hunting elevation is 7000 ft. Thanks!</p></blockquote><p></p>
[QUOTE="Salmotrutta, post: 1775921, member: 110250"] Thanks everyone! I think I am narrowing down the throating based on a dummy round with a 181 hammer and a COL of 3.094". Any thoughts on twist? I originally wanted to match my PRC with a 1:8 - however every stability calculator says thats overkill. Based on running Quickload with 181 and 199 hammers the edge goes to the 181's and with Barnes its the 175 LRX. I choose my bullet based on which weight retains 1200 ft-lbs AND 1800 fps the farthest. The ft-lbs number is arbitrary but it does allow you to compare bullets energy over longer ranges and select the one that works best for your application. 1800 fps is the number both Barnes and Hammer use as minimum required for reliable bullet performance. The WSM in a short barrel just can't get heavier (> ~190g) mono bullets going fast enough to increase their effective range over the 181 Hammer - this leads me back to maybe a 1:9.5 twist? Any thoughts, experiences or recommendations on twist? It looks like I should get those 181 hammers going to just a little over 3000 fps in a 20" barrel and my nominal hunting elevation is 7000 ft. Thanks! [/QUOTE]
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Throating the 300 WSM for Hammers in a Tikka LA?
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