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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
162 AMAX (.284) Min Expansion Velocity
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<blockquote data-quote="Michael Courtney" data-source="post: 934217" data-attributes="member: 28191"><p>Back in 2012, we measured the expansion threshold of the 208 AMAX in to be 1700 ft/s in ballistic gelatin. Slower impacts reliably tumble and demonstrate excellent wounding via tumbling, but they do not expand or fragment. Our experience in deer is that hitting bone can initiate expansion or fragmenting at lower velocities than bare gelatin, but bare gelatin is representative of hitting softer locations.</p><p></p><p>Usually different caliber bullets of the same basic design and construction have comparable expansion thresholds, so 1700 ft/s is likely a good estimate for the 162 AMAX. 1800 fps gives some margin for error.</p><p></p><p>Tumbling in one caliber does not indicate a likelihood to tumble in other calibers. I also don't feel as good about the wounding potential of the shorter, thinner, lighter 162 AMAX as I feel about the 208 AMAX. High speed video shows excellent wounding potential of the 208 AMAX when it tumbles, even without expansion or fragmentation. </p><p></p><p>Bottom line is the 162 AMAX might be iffy below 1800 ft/s. If it hits something harder to initiate expansion or tumbling, you might do OK down to 1400 ft/s.</p></blockquote><p></p>
[QUOTE="Michael Courtney, post: 934217, member: 28191"] Back in 2012, we measured the expansion threshold of the 208 AMAX in to be 1700 ft/s in ballistic gelatin. Slower impacts reliably tumble and demonstrate excellent wounding via tumbling, but they do not expand or fragment. Our experience in deer is that hitting bone can initiate expansion or fragmenting at lower velocities than bare gelatin, but bare gelatin is representative of hitting softer locations. Usually different caliber bullets of the same basic design and construction have comparable expansion thresholds, so 1700 ft/s is likely a good estimate for the 162 AMAX. 1800 fps gives some margin for error. Tumbling in one caliber does not indicate a likelihood to tumble in other calibers. I also don't feel as good about the wounding potential of the shorter, thinner, lighter 162 AMAX as I feel about the 208 AMAX. High speed video shows excellent wounding potential of the 208 AMAX when it tumbles, even without expansion or fragmentation. Bottom line is the 162 AMAX might be iffy below 1800 ft/s. If it hits something harder to initiate expansion or tumbling, you might do OK down to 1400 ft/s. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
162 AMAX (.284) Min Expansion Velocity
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