1680 powder in .357??

[castalott]

Has anyone ever seen any data on using 1680 ( accurate) in 357 loads. I have heard of this somewhere..... I suspect it would have to be for very heavy bullet loads only but know of no data...Thanks...Dale

[felix]

Dale, the powder is far too slow unless you can get the amount of it on up there. The maxximum case might be OK in the 35 or lower calibers. Use 820/9/116 at 13 grains of this latter powder for 150-165 grainers. ... felix

[BCB]

castalot,
I have used WC-680 (uses 1680 data) in the 357. As felix indcates, it is too slow. Seventeen grains of it and the 358429 (173 grains) yielded 1011 fps from a Ruger Security-six 6-incher. Eighteen grains produced 1103 fps from the same handgun. Velocities were slow, but the 1011 fps load was very accurate...BCB

[drinks]

Castalott;
If you are using surplus powders, as I suspect, the powder would be WC820n or the other , faster, WC820 from gibrass for .357-44mag., not the WC680 you likely have.
WC820n uses AA #9 data.
I have bought some WC820n, WC680 and WC844, just getting started with the WC680 in .45-70 but having very good results, so far.
I am using the 680 as 4198 and the 844 as 4895, roughly.

[castalott]

Ok Guys! Thank You All for your knowledge and replies!

Dale

[JohnH]

I like 680 in the 44 Mag. Yeah it's slower than H110, but I find it to be more consistant in accuracy, so the loss makes up. Use AA1680 or older Winchester 680 data if you have it. Nice thing about 680 is that figuring a load for it is pretty easy (in pistol cases) fill it to the base of the bullet or slightly more (for a bit of compression) and shoot away. Use the heavy for caliber boolits (170's to 200's for .357), lighter boolits won't make a good burn. The stuff is cheap, and the 200 fps you might give up using it will be easily offset by the accuracy and the extra range time you will have because of it.

[curioushooter]

1680 I suspect would be a different animal entirely in a 357 Mag Rifle with a 170+ grain bullet. In fact, it may be optimal for a 180 grain or 200 grain bullet.

I've got article data indicating 1680 with 158 grains and magnum primer at 17 grains is safe and generated 1700 FPS from a Henry BigBoy. This appears to underperform Lil'Gun and 300 MP. But I suspect that is because there isn't enough bullet weight corking it up to get a good burn.

[castalott]

Wow....You saved a lost thread but I value your input! I haven't had time to play (life gets in the way you know) but the heavy bullet in a rifle was exactly what I wanted to hear. I have a 180 gascheck design I wanted to hotrod.....

Thanks,dale

[Beerd]

"I've got an article indicating" is sorta like saying "I read it on the internet".
..

[curioushooter]

Yea...it was a handloader magazine article. They didn't say if they did any pressure testing...and I didn't test it myself. Google it and you may find it.

Westen powders refuses to divulge 1680 data for 357 magnum..
They do have the powder listed for max.

[curioushooter]

Is 1680 in Quickload? If so, I would sincerely appreciate someone generating a max load (35kPSI) with it and a 180 grain bullet like the Hornady XTP seated to the revolver seating depth (which is what works in most rifles). The SAECO 180 grain comes to mind as well.

I would like to do a head-to-head vs Lil'Gun and 300MP. I will report back of course.

[BCB]

QL predicts 14.5 grains of 1680 and a Hornady 180 XTP will produce 33639 psi and a velocity if 1147 from a 6 incher...

The problem--that is a loading density of 113.3%. Way to much powder to get in the case and seat a bullet.

The powder is too slow for a 357 unless you want low velocity. I've used WC-680 with the 358429 and the accuracy was quite good, but velocity was slow, but dirty burn...

Good-luck...BCB

[lar45]

I don't have any 180 XTPs hanging around. What length are you loading them to?

[psweigle]

Saves me the trouble of using 1680 in a 357 mag case with a 180 grain 35 remington bullet. Lol. I was actually going to assemble some to try in a henry single shot. Looks like I will stick with h110.

[curioushooter]

It seems like 300 mp would be a better powder. I know that one isn't in QL. I am thinking of rifles.

[psweigle]

Me too. I have the ruger 77/357, so I can't use the 35 remington bullet in that. 300 mp is said to be very similar to h10/296.

[psweigle]

My shooting buddy is the one with a henry single shot. He was looking for a better bullet for deer.

[nvbirdman]

Might be interesting in a rifle barrel.

[lar45]

For use in a rifle, you might be able to load them Abit hotter to get more velocity.

[psweigle]

I was thinking a little extra might not hurt. High pressure signs are a good guide line in uncharted waters.