Wednesday, January 23, 2013

I'm back, and will be posting test results from some custom molds.

I haven't been able to post for some time as work has been crazy.  That's good, not having work would be tough.  Anyway, I've been testing a cutomer 145 grain round nose / flat point bullet in revolvers and lever action rifle.  I also have a 168 grain version to discuss too.

I'll refer to these as my first generation custom molds.  I went through several designs and found some noses that worked and some that didn't.  In the near future I'll cover the good and the bad.  I already have orders placed for generation 2, or Version 2.0.

The question is, what is the optimum bullet size for a 357 magnum rifle, in this case the Rossi.  It has a slow 30 inch twist, which like lighter bullets.  Then what is the optimum bullet size for 357 magnum revolver, something in the 16 to 16.5 inch twist range.  Which likes heavier bullets, with high velocity.

The answer I came to is that the 140-150 grain range would provide the shorter length that the rifle would like.  It also turned out to work really well in the revolver. 

Here is the bullet, which exits the rifle barrel at 1,850 FPS, and the six inch revolver at 1,400 FPS.  It's a little hot for the handgun so I don't shoot it often.  In the rifle, this bullet has more energy at 100 and 200 yards than a 125 or a 158 grain bullet.  With a gas check, it is a sweet hard hitting shooter.  Accuracy is very good, but not stellar.  So 2 MOA at 100 yards is very repeatable, but more about that in the next update.

For now, heres the 145, I'll post more soon: