HOWARD J
Member
Does Hp38 meter (RCBS uniflo) as well as W231 ?
How long have they been the same? Did HP-38 become 231 or the other way round?It's the same exact powder sold under two different names.
In March 2006, Hodgdon Powder Company and Winchester® Ammunition announced that Winchester® branded reloading powders would be licensed to Hodgdon. Winchester smokeless propellants, the choice of loading professionals, are available to the handloader to duplicate the factory performance of loads from handgun to rifle and shotgun.
Hence the virtues of powder work up and using mid-to-high range load data target loads. If you use mixed range brass (and most of us do) with unknown reload history, I would not recommend new reloaders jump to loading max charge loads. Using mid-to-high range load data, even with slight variations of older W231/HP-38, powder work up from start charge and watching accuracy trends towards mid-to-high range load data should allow reloaders to identify accurate target loads.Lj1941 said:I checked some of the old data on the 2 and although close-they are different in most cases. My point is with a lot of new people handloading for the 1st time there is a chance for someone to get in trouble.
5.0 gr charge is mid-range load data and most 200 gr SWC bullets will be loaded longer at 1.240" - 1.260" OAL, which will lower the chamber pressure even more. Even if there were some variations in older W231 vs HP-38 powders, I don't think you'll run into much issues (Depending on the pistol, barrel and recoil spring rate, you may end up using slightly more than 5.0 gr.).200 gr CAST LSWC W231/HP-38 OAL 1.225" Start 4.4 gr (771 fps) 11,000 CUP - Max 5.6 gr (914 fps) 16,900 CUP
Berry's 180 gr TCFP bullet with 4.0-4.5 gr will produce light to mild recoil (like 9mm) but accurate target loads. At 26,400 PSI, cases won't bulge enough to cause resizing issues, even out of generous chambers.180 gr BERB FP W231/HP-38 OAL 1.125" Start 4.4 gr (872 fps) 26,400 PSI - Max 5.1 gr (984 fps) 33,500 PSI
180 gr Hornady XTP W231/HP-38 OAL 1.125" Start 4.1 gr (797 fps) 23,800 PSI - Max 5.0 gr (947 fps) 32,900 PSI
I use 5.0 gr charge for 165 gr 40S&W Montana Gold FMJ/JHP bullets.165 gr BERB FP W231/HP-38 OAL 1.125" Start 4.7 gr (933 fps) 25,200 PSI - Max 5.4 gr (1049 fps) 33,400 PSI
165 gr Sierra JHP W231/HP-38 OAL 1.125" Start 4.8 gr (946 fps) 28,100 PSI - Max 5.3 gr (1001 fps) 32,500 PSI