Gentlemen,
I’ve read that an under charge with H110 is just as dangerous as over charging a load.
I’ve gathered loading data that has considerable differences in the weight amounts for a 158 grain HP load for a 357 magnum loads.

Hodgdon, Lyman, Hornady, Spear they all differ very much.
Starting loads differ from 12.7 to 16.3 (Those are big difference wouldn’t you say?)

Any of you guys have a 357 and H110 load they use with jacked 158 gr hp?

Thanks,

Hodgdon's website lists an H110 starting load of 15.0 to 16.7 grs. for a 158 gr Hornady XTP COL 1.580 going from 1400-1600 fps.

158 GR. HDY XTP Hodgdon H110 .357" 1.580" 15.0 1418 28,600 CUP 16.7 1591 40,700 CUP

http://data.hodgdon.com/cartridge_load.asp

hope that helps.

H110 is a max effort powder, not even recommended for a 5% reduced load. I find the Speer data closer to what I actually get in my guns. I would go w/ Speer.

I load quite a few different 158gr bullets, and simply use 15grs for all of them. Just an easy round number to remember. They all shoot well and never had any issues with them not hitting the target or excessive pressures.

Work up.15.0-16.7grs16.7 is listed as max.

quote:

Originally posted by vinnyg:
Gentlemen,
I’ve read that an under charge with H110 is just as dangerous as over charging a load.
I’ve gathered loading data that has considerable differences in the weight amounts for a 158 grain HP load for a 357 magnum loads.

Hodgdon, Lyman, Hornady, Spear they all differ very much.
Starting loads differ from 12.7 to 16.3 (Those are big difference wouldn’t you say?)

Any of you guys have a 357 and H110 load they use with jacked 158 gr hp?

Thanks,

You read correctly, and that's exactly why powder manufacturers have recommended starting and maximum charge weights. H110 is ideal for 158s and will generally net you about 1400f/s on the top end when used in a 6" barreled pistol. You'll get more in a rifle or contender type gun, but in general slower powders are best with heavier bullets.

I favor WW296 which is similar to, but different than H110 and I have no problem pushing 158 Hornady XTPs at an honest 1370f/s. Just remember that these two powders will give you lots of flash & bang. 1425f/s is possible if you don't care about your gun and component lifespan.

My 357 loads never got accurate until near max loads. Hornady manuals max.

I also use H110, but at 16 grains with the 158XTP. It just works.

buckshot, BTW, H110 and WW296 are exactly the same powder, just maybe different lots. They just change the labels in the labeling process.

Every try H110 or W296 with 180 gr bullets in .357 Mag? If so, how much powder?

quote:

Originally posted by larrys:
I also use H110, but at 16 grains with the 158XTP. It just works.

buckshot, BTW, H110 and WW296 are exactly the same powder, just maybe different lots. They just change the labels in the labeling process.

I have heard that said before. I know mine are different simply because they're powders I've had in storage for decades. The difference I'm aware of is visible and can be seen when they are shot in side by side comparisons: WW296 produces a blue muzzle flash, H110 a orange/yellow one. At a minimum the coating is/was different, but with current production powder, I'm sure you're correct. I use to buy gobs of 452AA when I was shooting trap, and throwing in more for my other gun was economical for me at that time. Gwad I miss 1980's prices

Yah, I just finished a pound of H110 that was packaged in the cardboard container and I know it was different. Since I've had it for 15 years I now need to drop down and work up my loads again for the new version. Maybe I should just buy an 8# keg, but that would be too logical.

Maybe I should have said that if they are packaged in the black plastic containers, they are the same. That would be better.