Any “real” data on the 358 and 2400?

[Cree]

So I’ve been playing with a new 358 and a few different boolit weights, and of course, 2400 is proving to be an economical and fun load to shoot. I’ve got the 3rd and 4th Lyman Cast Bullet handbooks, as well as their 49th and 51st edition of the reloading manuals, but I’m wondering if anyone has any chronograph or Quickload data on roughly 20 grains of 2400 and a 200 grain boolit?

The data in the 4th edition - showing (IIRC) 18 grains at 1679 (or 1697?) fps and 23 or 24 at 1979 (or at least under 2000) - seems to be slower than my notes show for some older (albeit smaller caliber) loads with 175-190 grain boolits. I know a lot of the data in the books is recycled, especially with older and less popular cartridges, but I’m just wondering if anyone has any ideas on where the load in the first paragraph is falling. With 2400, I’m not sure where barrel length really could play a role (this one is 20 inches), but there you go…

Thanks,
Cree

[Ford SD]

So I’ve been playing with a new 358 and a few different boolit weights, and of course, 2400 is proving to be an economical and fun load to shoot. I’ve got the 3rd and 4th Lyman Cast Bullet handbooks, as well as their 49th and 51st edition of the reloading manuals, but I’m wondering if anyone has any chronograph or Quickload data on roughly 20 grains of 2400 and a 200 grain boolit?

The data in the 4th edition - showing (IIRC) 18 grains at 1679 (or 1697?) fps and 23 or 24 at 1979 (or at least under 2000) - seems to be slower than my notes show for some older (albeit smaller caliber) loads with 175-190 grain boolits. I know a lot of the data in the books is recycled, especially with older and less popular cartridges, but I’m just wondering if anyone has any ideas on where the load in the first paragraph is falling. With 2400, I’m not sure where barrel length really could play a role (this one is 20 inches), but there you go…

Thanks,
Cree

the rcbs cast book lists a load for the 358 win for 35-200- fn with 2400 powder min 23.0 --1986 max 25.0 --2043fps
work up your loads
GRT work up with a 20 inch barrel = 1932 fps +-

a 20g load I think would be below the case sealing range and below the accuracy node
also when you drop below 60% fill SD and ES go way up = bad accuracy

[cwlongshot]

I like the MP 359/220 better with re7.

CW

[Cree]

Thanks - this weekend, I’ll move the load up a bit, although 20 grains has been accurate. That is really the whole reason for the question - the data I’ve found just seemed off a bit - not that I want or need 2400 to push well into 2000 fps, as there are far better powders for that speed. My own research and experience as well as a LOT of shared information here in CB suggests the range of printed charge weights and velocity spread in “the real world” was not aligned with the information in the manuals. I also know that pressure and velocity aren’t going to move linearly with changes in caliber, and/or weight, so a 7mm or 30 caliber pushing a heavier boolit isn’t the best basis for getting ideas on how a .359 piull is going to act.

Man, I need to get a chronograph!

Cree

[Kosh75287]

Man, I need to get a chronograph!

I know THAT feeling!

[Rapier]

Even a cheap chronograph will work to give you your own comparisons to base decisions on as to what is too much velocity for you alloy. Just be careful with the all in one jobs, they tend to get perforated, right through the gizzard.