HAS ANYBODY HAD UNKNOWN MUNITIONS DO- DE+P THROATING DONE TO A RIFLE. THEY CLAIM IT WILL GET YOU 100-150 FPS ON ANY RIFLE.
I have the +P on a 30" Edge and run a 275 grain Lazer at 3,028 fps and another 28" barrel without the +P that runs the same bullet at 3,010fps. Maybe one is just a fast barrel, who knows. You would have to do the load development without the +P then do the +P to really see if you made any gains. If you run the +P using N570 or Reloder 33 you will have a very short barrel life as these are the hottest burning powders with H1000 and Retumbo being among the coolest of the "magnum" powders. There are many opinions on the +P throating so here is one from a barrel maker;
+P chambers
So, I'm throwing this out here and I'm going to be very blunt about it and I also posted this on Snipers Hide and Accurate Shooter. Here is my stance on +P chamber throats. You're cutting away the height of the lands as well as making the throat longer (as much as another .750" from what we've...www.longrangehunting.comSearch results for query: +p throat
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