I guess everyone's mileage varies. I use a Zero 158 swaged with 3 grains of Bullseye in a Model 14 and get dead-on accuracy at least out to 25 yards. I thought Alliant's listed maximum is 3.5 grains for a 158 Speer bullet which is also swaged.
I was shooting 3.2 gr. of HP38 (same powder as 231) with the Zero 148 HBWC's from my PPC gun. They are accurate however they were leading the cylinder something ferocious, and the forcing cone more than I was use to. Another shooter was having the same problem with the Zero's, but I don't know what powder he uses. I am trying 3.1 grs. of HP38 with the Precision Delta 148 HBWC to see if that helps.
I hope I don't hijack or divert the thread, but I've had some leading issues with the Precision Delta 148 hbwc (match lube). I loaded them in 38 special cases (double cannelure-for wadcutters), over 2.7 grains of Bullseye, with about .10" bullet exposed. It leaded the forcing cone of three revolvers I shot it in (SW model 14, SW 27, and Ruger Security Six). Two of those revolvers are 357 chambered. Leading was seen within 10 rounds (two loads of 5 rounds), and I stopped to wire brush out the lead after 15 rounds fired. I bought the "match lube" as it was supposed to be better.
In trying to eliminate leading, I ran a bunch of the PD 148 gr HBWCs through my SAECO 0.360" sizing die with 50/50 NRA lube (beeswax/alox). I set up the lubing to lube both bullet grooves. I also loaded down to 2.5 grains of Bullseye. I reshot. No leading. Accuracy was excellent (5 shot groups that would be covered with a quarter at 50 feet from a two handed rested position).
I realize I changed two variables (lubed bullet and lower powder), but I wanted to eliminate leading. I'll play with it more (lubing one lube, then trying 2.7 grains of Bullseye).
I emailed my leading concern to Precision Delta, and within a few days I received a phone call (in the evening) from someone from PD who wanted to follow up on my concerns. He suggested running 2.9 grains of W231. He said they don't get any leading reports, and the the "match lube" was Rooster Jacket. I thought that was excellent customer service.
I just wish I didn't get leading at the 2.7 gr Bullseye loading. I may try running a batch of bullets with Lee Liquid alox, and let dry, or put a second coat of Rooster Jacket. Prec Delta may have to use a double coat of Rooster jacket themselves.
I haven't shot Zero bullets-can't compare leading to them.
Here's what most of the guys at my club do for PPC loads.
Either PD HBWC or Zero DEWC over 2.3gr B.E. or 2.4gr Titegroup.
I used to use the Titegroup load until I tried the Bullseye load. The BE groups were quite a bit better. I also found 2.8gr and 3.4gr of Unique to be nearly as good as the 2.3gr BE, with 3.0 and 3.2 Unique just a bit behind the 2.8gr load.
How’s that for confusing.
The veteran PPC shooters at my club (consistently in the 596-599 scores) use the 2.3gr BE load as well. Me, I’ve been shooting PPC for 4.5 months, I am just getting into the 588-590 range for "Combat" and 565-574 range for "Service"
Shot today as a matter of fact in Fenton, Mich. 565 service and 585 24X Combat. My best score to date (during practice of course) is 590 32X, followed by 3 588's in a row.
Here's my 2 cents on the Zero 148gr. HBWC:
If you are determined to use W-231, a loading of 3.1-3.2gr. is optimal. Another excellent powder for this bullet is VV-N310. I currently load 3.0gr. of Titegroup for this bullet, as this powder has a slight edge in accuracy at 50 yds. slowfire over the VV-N310. These loads have been developed for a model 14 bullseye revolver.
All of this said, there is more than powder choices involved in developing a tack-driving load for the Zero 148gr. HBWC. I have a custom seating die just for this bullet, that only contacts the edge of the bullet's nose. I load this bullet a bit longer than most........COL is 1.160 with brass length of 1.145. I use a Redding taper crimp die to finish off the round. I get zilch leading with this formula. I believe that many leading issues with swaged bullets are caused by using a roll crimp(no matter how mild) that scrapes off a bit of lead as the bullet exits the case. You don't need no stinkin' roll crimp on a swaged bullet that has no cannelure, that is being fueled by a fast burning powder, and is loaded to pressures where "jumping crimp" is not an issue.
I am looking for an accurate load for my heavy barreled 6 inch .38 PPC revolver. My. intintion is to use Federal small pistol primers, with Zero 148 grain HBWC bullets, and Winchester 231 powder. I'm loading on a Dillon 550B. I have been told that I can use a powder charge of only 2.3 grains but every post that I have located indicates a much higher powder charge then this. (Ranging from 2.7 to 3.9grains)
Any help will be appreciated as I am new to reloading.
lbm