357 Sig load data

[lakersfan]

Using Longshot powder to load 357 Sig. Can't find load data for 115 grain FMJ. Load data for the 115 XTP is 9 to 10. Don't think it would be the same.

[Don the savage]

If you are trying to load fmj round point 115 you may find that you cant get enough neck tension to load .357 sig. i load flat point 124 gr for mine. Any round point will not work well in my experience.

[lakersfan]

Using this one http://www.hornady.com/store/9mm-.355-115-gr-FMJ-RN/

Hornady has load data for using this in 357 Sig but no Longshot powder data

[slayer61]

Start at the bottom end of the XTP recipe and work your way up. Longshot behind a 115 in .357 is a fast round. My 229 sent them down range at over 1500 fps. Fastest was 1587!

Montana Gold doesn't make a 115 gr for 357 Sig, but this is what I use

http://montanagoldbullet.com/index.php/357sig-125gr-fmj-183.html

[lakersfan]

This is what the Hornady .355 9mm fmj RN looks like. The case length is .856 and oal is 1.141. Loaded some to 9.0 and others to 9.8

Fits in a headspace gauge correctly. Bullet doesn't stick out the end. XTP is the other one.

[dohc]

i dont think rn works, never tried longshot but im using 124 and 147 hst's using power pistol and they work good

[lakersfan]

These RN are what is listed in the Hornady reload manual along with the XTP.
Pics make them look like the bullets are set in too far but not in person. I tried to take some of the bullets out of some dummies I made but takes some effort.

I ordered some Speer 125 FN bullets. Gonna get some 90 grain XTP to make some screamers. May try those Montana Golds as well.

[lakersfan]

Ordered 200 Montana Gold FMJ they have free USPS shipping.

Also bought some Accurate #9 powder locally to avoid hazmat

[cg&p]

So if it was me trying to do this i would 1st make sure a dummy round would chamber correctly and had absolutely NO bullet movement after multiple chamberings.

The bullet position in the case is really concerning because you will not be able to get a good crimp on the bullet neck. You need to be 500% certain the bullet will not move around. Typically RN bullets are not recommended for 357 sig, FP are the way to go if using FMJ or TMJ

As far as load data goes for that powder i think you are on your own. I could not find anything for FMJ RN using longshot. I have used JHP and TMJ FP interchangeably with good results but never tried to swap XTP and TMJ RN load data.

If u decide to try it please let us know the results!

[lakersfan]

Here is a pic I took from the Hornady load data book for 357 Sig.
The 35557 bullet is what I am using. Besides being RN the side of the bullet is similar to a XTP so plenty of surface to grip onto.

I did not crimp. The Lee die set says if no crimp is desired back it off 1/2 a turn after is touches the case mouth. If a crimp is desired turn 1/4 turn extra. Bullets need a crimp groove in order to crimp it says.

[lakersfan]

The bullets are in there tight. I made some dummies but could not get the bullet out to reuse them so tossed them. A bullet remover is next on my list of things to buy.

[lakersfan]

Pics of dummy round in my case gauge and barrel. Cycles in the gun just fine.

[lakersfan]

I made 50 complete rounds. Lost over 20 bullets on dummies and some with bullets pushed too far in. Have other bullets on the way and plan to get more.
Should I try a round or two or just toss them in some cola to disable them and not worry about it? These are 9.0 gr with a oal of 1.140

[f4tweet]

http://web.archive.org/web/20050205044935/http://www.handguninfo.com/Archive/www.Pete-357.com/

[lakersfan]

Thanks