need advice on this lead

I am not a bullseye shooter ,nor  patient enough to shoot 25yards groups from sandbags with a handgun .

Hitting the big steel plates at the steel challenge tipical distance is enough for me.

The power factor rule is not strongly enforced at my shooting club , but I am complying most of the time .

I use too range scrap lead , mostly from hardball cores and 22 bullets . I use to mix it 50% with clean lead sheets from RX protections . I add , just to make an effective magic potion one 100 grams stick of 50 % tin lead bar solder. This alloy I use for subsonic bullets in revolvers and rifles , from 7mm to 458Lott. Including the 45ACP .

Heavy bullet boar hunting loads in the 45/70 ,444Marlin or 44mag loads shoot well with soft bullets.

The problem are the 9mm x 19 , 9x21 and a little less the 38 superauto (9x23)

All these caliber work at higher pressure than non magnum revolvers and  consequently lead with soft alloys .

Luckily the solution is simple  I just quench them bullets from the mould  in a bucket of water , and  even if  my own  is a low antimony alloy , the bullets get hard enough to be shot in the nines. Of course the trick is to use the lowest pressure you can.

I use the  two  nominal 150 grain bullets   ,at left in the picture at the lowest speed that cycles the pistols ,always around 1050 fps.

The bullets are sized as large as they are accepted in the chamber , that is 357 to 358.

I remember that truncated cones 125 bullets sized 356,using gas checks and linotype alloy leaded and keyholed wildly in a 9x21  Tanfoglio pistol.

The US made 9mm pistols often  use a slow rifling twist ,around 1/18   ( the 38sp revolver twist)while European pistols use the steep !/10 twist. The slow twiast helps to reduce leading. 

You can see  9x21 and 9 luger rounds