I'm trying to find a load for my 9mm 125gr cast rn with IMR SR-4756. I've looked everywhere and can't find anything. Plz help!
I can only find a load for 125gr lcn would that still be the same load for lrn?Hodgdon owns IMR (DuPont) and Winchester powders now.
Is a better link.
Bullet Weight (Gr.) Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure
125 GR. LCN ........... IMR SR 4756 ............. .356" 1.125" 4.2 972 24,400 PSI ... 4.8 1071 30,200 PSI
Well you could be putting to much taper crimp on the bullet and squeezing the bullet down to where it doesn't fit the bore properly anymore or In my case I found that casting my own bullets and sizing them to .358" took care of the keyholing issue. Some 9mm handguns just like a fatter bullet.Range report: I took out my 9mm and the gun did not blow up even with the 4.8gr but from 4.2-4.8 the all keyholed and I have no idea why. Anybody know how to stop that?