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The Range
Ammo & Reloading
Opinions on .357 Sig reloading
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<blockquote data-quote="Koveras" data-source="post: 718144" data-attributes="member: 1669"><p>I used to load quite a bit of 357 Sig, and I didn't find it to be hard, but definitely different than the typical tapered or straight walled pistol cartridges.</p><p></p><p>You have to be careful which 9mm bullets you use, as the ogive on many of the bullets is too long. By the time the bullet is seated to a correct overall length, the front of the bullet is already tapering and there is not enough neck tension to hold the bullet securely. I had good luck with the Remington 9mm 124 gr JHP. There are also 9mm caliber bullets specifically intended for the 357 Sig.</p><p></p><p>Expect a few split case necks with each loading. When I was shooting a lot of 357 Sig, I would load and shoot in groups of 300, and typically about 3-4 would have split necks each time around.</p><p></p><p>For sizing, I used the method described by 12gabackup and also just using spray lube and the steel 357 Sig sizing die. I could never tell any difference in the number of case mouth splits between the two methods and 12gabackup's method is a lot faster.</p><p></p><p>Finally, the Lee Factory Crimp Die for the 357 Sig works the same way it does for bottle necked rifle cartridges: a collet is forced to close around the case neck and gives a very solid crimp. I used the Lee FCD for all of my 357 Sig ammo and I never experienced bullet setback. </p><p></p><p>These are just my experiences. Hope they help!</p></blockquote><p></p>
[QUOTE="Koveras, post: 718144, member: 1669"] I used to load quite a bit of 357 Sig, and I didn't find it to be hard, but definitely different than the typical tapered or straight walled pistol cartridges. You have to be careful which 9mm bullets you use, as the ogive on many of the bullets is too long. By the time the bullet is seated to a correct overall length, the front of the bullet is already tapering and there is not enough neck tension to hold the bullet securely. I had good luck with the Remington 9mm 124 gr JHP. There are also 9mm caliber bullets specifically intended for the 357 Sig. Expect a few split case necks with each loading. When I was shooting a lot of 357 Sig, I would load and shoot in groups of 300, and typically about 3-4 would have split necks each time around. For sizing, I used the method described by 12gabackup and also just using spray lube and the steel 357 Sig sizing die. I could never tell any difference in the number of case mouth splits between the two methods and 12gabackup's method is a lot faster. Finally, the Lee Factory Crimp Die for the 357 Sig works the same way it does for bottle necked rifle cartridges: a collet is forced to close around the case neck and gives a very solid crimp. I used the Lee FCD for all of my 357 Sig ammo and I never experienced bullet setback. These are just my experiences. Hope they help! [/QUOTE]
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