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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Berger 180 Hybrids
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<blockquote data-quote="Petey308" data-source="post: 2765779" data-attributes="member: 106845"><p>There will typically be a delay, and if you look closely at those cross-sections I posted, you can see right at the tips there's essentially a straight channel before opening to the cavity. </p><p></p><p>It's my theory that this allows the bullets to penetrate a bit as the tip begins to buckle into the cavity. Since the bullet impacts at such a high velocity, it's going to cover come distance before the hydraulic force really begins. Unless you're using a version without sufficient starting mass, it impacts at a very high impact velocity, and/or experiences a ton of resistance upon impact (dense muscle and/or bone), you'll see a good balance of penetration and expansion. When those things are against you, you may indeed see more of an instant expansion and more shallow penetration. </p><p></p><p>Larger calibers will obviously have more surface area than smaller calibers even before beginning to deform, and their cavities are overall larger as well. So it's common for the smaller calibers to penetrate a bit more before you see that permanent cavity/wounding. </p><p></p><p>It will definitely help you to know things like the cavity size of the particular Berger you're using, and then things like it's mass, what your impact velocity will like be, or the anticipated range, and the amount of impact resistance the bullet will encounter based on the game size and anatomy you're hunting. Adjusting your shot placement helps too to reduce or increase impact resistance as needed. </p><p></p><p>I'm just adding to the discussion. I'm not trying to argue or say you're wrong, just to clarify.</p></blockquote><p></p>
[QUOTE="Petey308, post: 2765779, member: 106845"] There will typically be a delay, and if you look closely at those cross-sections I posted, you can see right at the tips there’s essentially a straight channel before opening to the cavity. It’s my theory that this allows the bullets to penetrate a bit as the tip begins to buckle into the cavity. Since the bullet impacts at such a high velocity, it’s going to cover come distance before the hydraulic force really begins. Unless you’re using a version without sufficient starting mass, it impacts at a very high impact velocity, and/or experiences a ton of resistance upon impact (dense muscle and/or bone), you’ll see a good balance of penetration and expansion. When those things are against you, you may indeed see more of an instant expansion and more shallow penetration. Larger calibers will obviously have more surface area than smaller calibers even before beginning to deform, and their cavities are overall larger as well. So it’s common for the smaller calibers to penetrate a bit more before you see that permanent cavity/wounding. It will definitely help you to know things like the cavity size of the particular Berger you’re using, and then things like it’s mass, what your impact velocity will like be, or the anticipated range, and the amount of impact resistance the bullet will encounter based on the game size and anatomy you’re hunting. Adjusting your shot placement helps too to reduce or increase impact resistance as needed. I’m just adding to the discussion. I’m not trying to argue or say you’re wrong, just to clarify. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Berger 180 Hybrids
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