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The Range
NFA & Class III Discussion
10.5” 5.56 SBR Ammo Recommendations
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<blockquote data-quote="Norman" data-source="post: 3684265" data-attributes="member: 4232"><p>Not to be that guy, but I disagree with most of your opinions on ammo. </p><p>First, if the 62 grain FBI loads you were talking about were the Federal FBIT3, those are a 62 grain Trophy Bonded Bear Claw. Those were not designed for ‘fleshy targets’. They are literally one of the best, if not the best barrier blind round made. They’re bonded, and have some of the best penetration in the 223/556 load.</p><p></p><p>Second, speed doesn’t kill. Tissue disruption kills. A Ford Taurus going 75 MPH will mess you up more/faster than any AR/AK/SKS round will. It disrupts more tissue. IF speed is your primary concern, MK262 is running about 100-150 FPS slower than the FBIT3 62 grain load out of an 11.5” barrel. MK262 is arguably the best SD round when barrier blind rounds aren’t needed, including in the 11.5” barrel. The only exception to this is around 200 yards plus when velocity hit about 2100 FPS and fragmentation stops.</p><p></p><p>Lastly, stay WELL away from varmint bullets, especially in the 40-55 grain range. They explode on impact, and they do not penetrate NEAR enough for consistent incapacitation. Remember, ballistics gel =/= flesh. It’s merely a standardized metric for penetration and tissue disruption. They throw an awesome cavity for a few inches of gel and stop. That lack of penetration potentially means lack of reaching organs. This is made worse by higher velocities.</p><p></p><p>There’s plenty of documentation about theses rounds, including Doctor GKR if you want to look further into them.</p></blockquote><p></p>
[QUOTE="Norman, post: 3684265, member: 4232"] Not to be that guy, but I disagree with most of your opinions on ammo. First, if the 62 grain FBI loads you were talking about were the Federal FBIT3, those are a 62 grain Trophy Bonded Bear Claw. Those were not designed for ‘fleshy targets’. They are literally one of the best, if not the best barrier blind round made. They’re bonded, and have some of the best penetration in the 223/556 load. Second, speed doesn’t kill. Tissue disruption kills. A Ford Taurus going 75 MPH will mess you up more/faster than any AR/AK/SKS round will. It disrupts more tissue. IF speed is your primary concern, MK262 is running about 100-150 FPS slower than the FBIT3 62 grain load out of an 11.5” barrel. MK262 is arguably the best SD round when barrier blind rounds aren’t needed, including in the 11.5” barrel. The only exception to this is around 200 yards plus when velocity hit about 2100 FPS and fragmentation stops. Lastly, stay WELL away from varmint bullets, especially in the 40-55 grain range. They explode on impact, and they do not penetrate NEAR enough for consistent incapacitation. Remember, ballistics gel =/= flesh. It’s merely a standardized metric for penetration and tissue disruption. They throw an awesome cavity for a few inches of gel and stop. That lack of penetration potentially means lack of reaching organs. This is made worse by higher velocities. There’s plenty of documentation about theses rounds, including Doctor GKR if you want to look further into them. [/QUOTE]
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