9mm 115 and other weights

Also, alot folks change recoil springs to lower spring rates to run the heavy bullets with faster powders when chasing that perfect power factor to achieve a consistent slide operation which in of itself helps with felt recoil.
 
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Majicmike said:
I'm picking up 250 each of 125 and 147 minor today. Not sure when I cannier to the range though.
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Ship them to me. I'll get out to the range and give you a full report immediately. :D
 
Majicmike said:
Cant do it,, this bullets are for men who shoot matches. They are too dangerous for rookies:cool:
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I tried shooting matches, but just once.

I gave up after I shot the fingers holding them. :confused:
 
One issue that has not been mentioned is Kinetic Transfer. The faster moving 115gr bullet will not transfer kinetic energy to the target as well as the 147gr bullet at the same power factor. That transfer of energy is what is what causes steel poppers to fall. Try shooting one of those polymer shooting targets with a rifle round (5.56 of .223 for example) and then with a pistol round (9mm or .45acp for example). the rifle round will have more energy, but will not transfer that energy to the target. The polymer target will hardly move from being struck by the rifle round, but will be visibly moved by being struck by the pistol round. The energy from the rifle round will have been used to pass through the target instead of moving it. Similarly a faster moving 115gr bullet will use its energy to attempt to travel through a target, as opposed to a 147gr bullet moving slower which will tend to transfer the energy that it has to the target. This becomes important when trying to knock down steel poppers and plates. Even if the power factor of both the 115gr and 147gr ammunition is the same, there will be a difference with the kinetic transfer.

(I hope that makes sense. Maybe someone else can explain it better.)
 
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