Most powders will get you 1050-1100fps with your 4" bbl. The slower powders like bluedot, herco, power pistol, true blue will get you there in your shorter 2" & 2 1/2" bbl's.
The 640 molds are custom molds made by Mihec, as is the 358156's posted above in pps's post. The 358156 also has 2x crimp grooves. Actually the 503 clones (245g hp's) are from a custom mihec mold and the cramer hunter's are from an extremely rare (late 30's) cramer mold. I've never seen another one or any posts my anyone having 1. A picture of the old cramer hunter bullet mold.
There's too many ways to skin a cat when it comes to hp's for the 38spl/357. Get tired of kicking spent 9mm cases out of the way at the range???? They are easily recyclable, some 150g jacketed hp's made from 9mm (or 380acp) cases for the 38spl/357.
Some 265g hp's made from 40s&w cases for the 44spl/mag.
Some 225g hp's made from 40s&w cases for the 45acp.
Why show pictures of such bullets???? Because it's the reloads imagination that is the only thing that limits what they use/shoot. Those were made with nothing more than free range brass, free range lead and common reloading dies that anyone can buy.
Those 150g hp's shot @ 50ft into tightly bundled wet newspapers with a 1100fps load. The bullets that had the jacket/core stay intact penetrated deeper than the jackets that shed their cores. Still not bad, don't know if it's true or not but people claim that you get 40% to 50% less penetration in wet paper compared to ballistic's gel.
good luck
or bring a slow companion.
