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Thread: Advantage of +P+ ammo
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14-09-2017, 16:11 #1
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Advantage of +P+ ammo
Anyone here use +P+ ammo for their guns? What is the biggest advantage of +P+ ammo over +P ammo in SD situations (or regular ammo for that matter)?
I presume those who use it do not do so on a regular basis because of the extra wear on their guns.
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14-09-2017, 17:58 #2
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Re: Advantage of +P+ ammo
Back in the olden days expansion relied on velocity.
The +p and +p+ generally ran faster so were expected to expand better.
These days expansion is better controlled.
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14-09-2017, 18:14 #3
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Re: Advantage of +P+ ammo
According to Massad Ayoob 147gn 9mmP Rangers are comparable to high end .38 Special, 127gn +P+ to lightish .357 velocities and performance.
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14-09-2017, 20:39 #4
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Re: Advantage of +P+ ammo
https://en.m.wikipedia.org/wiki/Overpressure_ammunition
This explains the principles.
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14-09-2017, 21:58 #5
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Re: Advantage of +P+ ammo
It depends more on the bullet design, construction and velocity actually achieved out of the gun than whether its +P+ loading or not.
Winchesters website has some stats on their expansion, penetration and weight retention through a variety of objects. I'm changing from 127 +P+ to 147 because they seem to terminally perform equivalently, but I can shoot the lower recoiling round with quicker splits.
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14-09-2017, 22:16 #6
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Re: Advantage of +P+ ammo
+P+ kills your attacker deader
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15-09-2017, 09:55 #7
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Re: Advantage of +P+ ammo
very good question, what id like to know is what is the advantage of using +p+ 9MM FMJ ammunition as opposed to normal 9MM FMJ as the 9mm already has a reputation for over penetration.?
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15-09-2017, 09:57 #8
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Re: Advantage of +P+ ammo
Some carbine/sub machine guns like hotter loads. Maybe that?
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15-09-2017, 10:18 #9
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Re: Advantage of +P+ ammo
More powerful (hotter) FMJ will over penetrate more, wear out guns faster and recoil more. Wounding will be the same puncture wound as for regular FMJ. = No advantage.
More powerful (hotter) HP's will mostly expand more, they will also recoil more and they may expand too much, unless the manufacturer designed them to expand in a controlled way while staying together. And if they expand too much and lose fragments you may not have ideal depth penetration. = May have advantages but only if you use the premium stuff from the good companies...
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15-09-2017, 13:36 #10
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