Originally Posted by vtducrider
Loaded my first batch of 38 Specials today. Started with the online Hodgon's reloading data. I am using Zero 125gr JHP, and Winchester 231. I made couple handfuls each with 4.5gr and 4.8gr of powder charge. OAL is 1.440' and crimp 0.375".
According to Hodgon's I should be getting 1071 ft/s for the 4.8gr load, which is at the top of their range. I was expecting a little over 900ft/s for the lighter load I made.
With the F-1 Chony, I got 750 ft/s for the 4.5gr loads, and 850ft/s for the 4.8gr out of my 4" Python. Both with SDV of about 20ft/s. Accuracy was good at 15ft. But I was expecting to get more velocity. I think I am going to push it to 5.1gr.
Care to share your load data?
From Hodgdon for a Jacketed
125 GR. HDY XTP Winchester 231 .357" 1.455" 4.3 826 13,300 CUP 4.9 934 16,300 CUP
For a LEAD
125 GR. CAST LRNFP Winchester 231 .358" 1.445" 3.8 876 10,300 CUP 4.8 1071 16,900 CUP
These are not + P loads
Lead charge for charge will USUALLY be faster than the same weight jacketed bullet.
For the + P load
they list HP-38 which is IDENTICAL to 231.
125 GR. HDY XTP Hodgdon HP-38 .357" 1.455" 5.3 1018 19,800 CUP
Your Python can easily handle the + P loading. Most revolver data published is done with a vented barrel that doesn't yield the same numbers as a true revolver. Cylinder gap, crimp, bore and bullet size all come in to play to give you different results.
PS: I usually load 158 gr RNL over a heavy charge of 2400 for major loads in IPSC. If I were loading a 125 gr. jacketed slug I would go with BE at about 4.8 grains.