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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barnes LRX TTSX, which one??
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<blockquote data-quote="500yd" data-source="post: 727788" data-attributes="member: 27428"><p>You contradicted yourself here. You state TSX gives complete penetration whether 130 or 200 gr. Then why do you prefer the larger bullets?</p><p></p><p>Velocity (speed) in isolation doesn't kill. Proper shot placement kills. Velocity flattens trajectory and decreases wind drift. These two things aid in shot placement, the latter more than the former. Sure, tools are available to lob a slower bullet to the same POI, but these same tools work even better with flatter trajectory.</p><p></p><p>I don't believe that's correct. Using the Barnes load data, with the 200 at 2700 FPS, at 500 yds the 300 WSM 130/200 TTSX max loads will both have between 1500-1600 ft-lbs/sec impact energy. Thus penetration should be **** near identical for these two rds up to 500 yds. And in fact the 110 gr @ 3800 FPS MV should be in the 1500 ft-lbs range at 500 yds as well, making it the clear winner due to trajectory and flight time, assuming it is sufficiently accurate in your tube.</p><p></p><p>Friction and thus heat buildup wears a tube. Faster rounds produce more heat per unit time. The key here is unit time. This is the long range hunting forum, thus most aren't shooting lots of rounds through semi-autos in rapid succession building up heat in the barrel. The barrel has time to cool between shots. For a standard bolt gun shooting 1000 rds in its lifetime, and none or few in rapid succession causing excess heat buildup, you're not going to see significantly more POI movement after 1000 rds at 3500 FPS vs 1000 rds at 2700 FPS.</p></blockquote><p></p>
[QUOTE="500yd, post: 727788, member: 27428"] You contradicted yourself here. You state TSX gives complete penetration whether 130 or 200 gr. Then why do you prefer the larger bullets? Velocity (speed) in isolation doesn't kill. Proper shot placement kills. Velocity flattens trajectory and decreases wind drift. These two things aid in shot placement, the latter more than the former. Sure, tools are available to lob a slower bullet to the same POI, but these same tools work even better with flatter trajectory. I don't believe that's correct. Using the Barnes load data, with the 200 at 2700 FPS, at 500 yds the 300 WSM 130/200 TTSX max loads will both have between 1500-1600 ft-lbs/sec impact energy. Thus penetration should be **** near identical for these two rds up to 500 yds. And in fact the 110 gr @ 3800 FPS MV should be in the 1500 ft-lbs range at 500 yds as well, making it the clear winner due to trajectory and flight time, assuming it is sufficiently accurate in your tube. Friction and thus heat buildup wears a tube. Faster rounds produce more heat per unit time. The key here is unit time. This is the long range hunting forum, thus most aren't shooting lots of rounds through semi-autos in rapid succession building up heat in the barrel. The barrel has time to cool between shots. For a standard bolt gun shooting 1000 rds in its lifetime, and none or few in rapid succession causing excess heat buildup, you're not going to see significantly more POI movement after 1000 rds at 3500 FPS vs 1000 rds at 2700 FPS. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barnes LRX TTSX, which one??
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