Lee C358-158 SWC/GC H-110 Load Data Help?

[JesterGrin_1]

I am looking for a bit of help with H-110 for the Lee C358-158 SWC/GC? Or where to look for such data?

Thank You.


On a side note I received the Lee C358-158 SWC/GC 6 cavity mold and it casts great and the biggest plus was that it does not cast small lol. They come out at .360-.361. :)

At any rate I will use New Starline .357 Mag brass and the CCI- Small Mag Pistol Primer and they are pretty much earmarked to be used in double action pistols made by S&W / Ruger.

And the best part loaded on my newly set up Piggyback II on top of a Lee Classic Cast Single Stage Press along with the RCBS Uniflow powder measure equipped with the Hornady case activated linkage. :)

[parson48]

I would use 158 gr jacketed data since H 110 shouldn't be loaded light. I shoot that boolit in my 357 maxi with stout loads of 1680. I really like it.

[JesterGrin_1]

I would use 158 gr jacketed data since H 110 shouldn't be loaded light. I shoot that boolit in my 357 maxi with stout loads of 1680. I really like it.


That is what I thought till I looked in my reloading books lol. There is not just 1 158Gr bullet or boolit to get the power charge weight. So I thought I would ask as what I was thinking of doing is simply use close to the lowest starting powder charge given.

[Tim357]

Just note that this boolit does seat deeper than other .357/.38 boolits and make allowances for that. Easy to compress a load if you're not careful.

[JesterGrin_1]

Just note that this boolit does seat deeper than other .357/.38 boolits and make allowances for that. Easy to compress a load if you're not careful.

Right. That is why I am asking the question as to where to begin with H-110?

[Tim357]

How about starting with 180 grain bullet data? Seems like they would be seated about as deep as the Lee. Just as an aside, i've used 14gr 2400 with this boolit, with no problems. A while back, Brian Pearce penned an article in Handloader. He recommended 13.5 H110 under a Nosler 180 Partition for 1194 fps from a 7.5" Ruger Bisley.
Free advice, freely offered.

[Bzcraig]

From the Hodgdon website but note it's for the Hornady 158 XTP. If you can get a measurement of that bullet compared to yours can can get a good OAL.

BULLET WEIGHT158 GR. HDY XTP
ManufacturerHodgdon
PowderH110
Bullet Diameter.357"
C.O.L.1.580"
Starting Load
Grains15.0
Velocity (ft/s)1,418
Pressure28,600 CUP
Maximum Load
Grains16.7
Velocity (ft/s)1,591
Pressure40,700 CUP

[JesterGrin_1]

This brings up a good question I think. And that is what makes more of a difference with pressure the weight of a bullet or the empty space in a case?

I know it is a little of both but would not the weight of a bullet make far more of a difference then lack of cartridge air space?

Thus even if a 180gr bullet takes up the same amount of case space as a 158 gr bullet would you still not use 158Gr starting data or because of lack of air space drop down to 180Gr data or something in the middle?

[Motor]

First of all I would use the 158gr data as posted above. Just keep in mind that a gas check is not a substitute for good alloy. But a hard cast boolit can be driven at magnum pressure without a gas check.

Motor

[tazman]

The Lyman 358156 is a very similar boolit. The Lyman 49th handbook calls for 15.0-15.7 grains of H110 with an OAL of 1.59.
I think these loads would be good for the Lee boolit as well. Just start with the starting load and go from there.