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Rifles, Reloading, Optics, Equipment
Reloading
Thoughts on 150 gr TTSX performance in 7mm WBY MAG
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<blockquote data-quote="Spotter&#039;s Signature" data-source="post: 2977056" data-attributes="member: 121865"><p>I'm 0.020" from my mag max. That would be meaningless in terms of increased powder volume. I don't move the projectile, as this BTO is optimal for my chamber and for this projectile, determined experimentally. Switching to the TSX would only result in using a projectile with a lower BC, for no gain. I noticed that the velocity plateau for the 150 gr TTSX in this rifle stretches over 77.3-78.7 gr of RSM, and the velocity gain over that is minimal - 70 fps! Even if I used more powder, the gain would be not worth developing a new load. Also, 300 WBY has more reach than a 7 WBY; you keep the velocity longer, with different characteristics bullets. People reported problems with TSX after they strike a hard target (e.g. a bone) - TSX hollow points get deformed and can't open, so they pencil through. That's what the blue tip was supposed to solve (and improve BC).</p></blockquote><p></p>
[QUOTE="Spotter's Signature, post: 2977056, member: 121865"] I'm 0.020" from my mag max. That would be meaningless in terms of increased powder volume. I don't move the projectile, as this BTO is optimal for my chamber and for this projectile, determined experimentally. Switching to the TSX would only result in using a projectile with a lower BC, for no gain. I noticed that the velocity plateau for the 150 gr TTSX in this rifle stretches over 77.3-78.7 gr of RSM, and the velocity gain over that is minimal - 70 fps! Even if I used more powder, the gain would be not worth developing a new load. Also, 300 WBY has more reach than a 7 WBY; you keep the velocity longer, with different characteristics bullets. People reported problems with TSX after they strike a hard target (e.g. a bone) - TSX hollow points get deformed and can't open, so they pencil through. That's what the blue tip was supposed to solve (and improve BC). [/QUOTE]
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Thoughts on 150 gr TTSX performance in 7mm WBY MAG
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