I have used W231 in 9mm for many years. I load a 115 grain jacketed bullet with 4.7 grains. Max according to the Lyman manual #48 is 4.9. This load was chronographed and came out 100fps slower than factory. I have used it in my Luger and all my other 9mm's with no problems.
Copied from Rick W.--The basic concept of starting low and letting the load in your particular pistol tell you facts is still around for the guys that still have their vision and some fingers.
I have spent several weeks working up a proper loading for a .30 caliber Luger just to stay safe.
I strongly suggest you do the same.
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