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I've found that you get leading at relatively low velocity levels with fast (hot) powders like Bullseye, 231 and Unique, and relatively little leading at much faster loadings with a slow (cool) powder like 296(akaH110)

Jf, sounds like you fired enough groups (4 ea of 5 shots) for the results to be meaningful -- but that the flyers are an indication that no valid conclusions can be drawn from the rest. Admitedly, firing braced the way you were is difficult. I doubt I could do as well. But by the same...

H110 is no good at all for 9mm and for .45ACP in a semi-auto. But I have to disagree with most of the posters on .38 +P loads. I've used it in some .38 +P cases (but fired in a .357) and found it accurate. I forget the loads -- I mean, when all is said and done, H110 is better in a...

1/10 of a grain might be enough to send pressures into the danger zone, but I can't see it mattering much in velocity or accuracy. There's probably more deviation (in both velocity and accuracy) from shot to shot in the same load than there is in the average of 15.2 and 15.3. That's less...

I had to order mine in. No retailer carried them in stock. They won't stock them until there's a demand, and there won't be a demand until they're readily available, so what can you do... I was pretty impressed with the bullet. The accuracy at 18 gr and 18.4 gr of H110 was as good as or...

Regarding the 140 gr - 158 gr. bullets in your .357: I've gone with 140 gr as my "weight of choice" in jacketed .357 bullets. To me, 158 gr is just enough lower in velocity that it isn't worth using a jacketed bullet -- not that it doesn't expand properly, but there just isn't enough velocity...

I wouldn't have mentioned that HP38 and W231 were the same powder if the concept hadn't been circulating for some time (more than 10 years) and been published in reputable magazines. Either Hodgdon or Winchester confirmed it at one time -- but not first-hand to me, it is true. One -- maybe...

I've nothing to contribute as to why the round squibbed -- obviously the primer didn't ignite the powder fully but was powerful, along with whatever did ignite, to push the bullet that far. Cold and crimp are both likely contributing factors. Since the event wasn't repeated, it was likely a...

I've used .357 Speer and Hornady jacketed bullets -- I prefer around 140 gr. but 125 gr. is close -- and found them more accurate than other jacketed types. I've chrono'd them and can't say one is more consistent than any other. I feel the Speer Gold Dot 135 gr is about the most accurate...

Ol' Joe, I stand corrected. You obviously did better and more complete research than I did. I had questions about some statements, gave a quick look at data, and saw what I wanted to see, without checking in depth. Pretty much you covered it when you said one can never state that...

Since Hodgdon has been quoted, here's some data from them: 13 gr H4227 wi 158-160 Lead, 1223 f/s at 24800 CUP; 12.5 gr H4227 wi 160 gr Jacketed, 1172 f/s at 25800 CUP. 2.8 gr HP38 wi 158-160 Lead, 731 f/s at 9900 CUP; 3.2 gr HP38 813 f/s at 13300 CUP. Other powders, calibers, bullet weights...

Speer used to like Green Dot quite a lot (I don't know about the latest manual). Loads and velocity were about half way between Bullseye and Unique in .44 Special. I started pistol handloading using Green Dot for light loads, including some .44 Specials. I found it neither better nor worse...

I enjoy reloading, but I enjoying testing the loads more.

I've got a 6" barrel Dan Wesson that shoots the same load considerably faster than my 8" barrel. I think individual barrel differences are a lot more meaningful than 2" barrel length. Added to this are variations between lots of powder and ammunition, ambient temperature, and statistical...

Interesting data, Peter, and thorough enough to be depended on. I may try some Trailboss as a result of it. FYI, my 8" Dan Wesson .357 produces about the same velocity as my 6.5" Taurus, and what for me is a snub-nose .357, 6" Dan Wesson, is by far the fastest of the three. At 700 f/s...

Instead of cranking my dies for .38/357 (and for that matter .44 spl/magnum) back and forth, I found some washers that work. A tungsten carbide sizing die doesn't need any adjustment of course, but the expander and crimping die fit the magnum cases with the washer in and the special cases...

Barrel length is not the major cause of velocity difference, especially the difference between 4" and 4.7". The barrels themselves make a difference -- for instance, my 6" .357 shoots faster than my 8". The lots of powder used make a difference -- I've chronographed reloads made at the same...

Strongbad -- Thanks for the reference to the velocity/length data. (Wasn't the article I read and remember badly.) It is excellent authoritative data you can count on.

The variation in individual guns is greater than the velocity difference betwen a 20" and 24" barrel. For example, going way down to where barrel length does make a difference, my 6" .357 chrono's a particular load at 1400 f/s, my 8" only 1300 f/s, and my 6.5" 1325 f/s -- and that's averaging...

Just like an oven takes longer to reach hotter temperatures and longer to cool down, mag primers burn longer as well as hotter. If you're into milliseconds, that is. They are for igniting what a standard primer has trouble igniting. It takes a major size lab to measure pressure differences...