How light (in grains) could a .357 SIG bullet possibly get?

[bwh]

A .357 Magnum (whose ballistics the .357 SIG was designed to duplicate) can fire bullets as light as 37 grains (source: http://magsafeonline.com/prices_specs.php) and as heavy as 200- or so grains (source: http://www.doubletapammo.net/index.php?route=product/product&path=303_331&product_id=337), but the heaviest .357 SIG loads are 180 grains (source: http://www.doubletapammo.net/index.php?route=product/product&path=303_332&product_id=618). I am not handloading/reloading; I simply am curious about this. Could a .357 SIG possibly fire 30- or 35 grain bullets (or even lighter than that)?

 

[rcmodel]

The Magsafe link you provided shows a 45 grain load for the .357 SIG.

That is probably about as low as it can go and still have enough bullet to stay in the case during feeding.

rc

 

[bwh]

I mean not to correct you, but the magsafe link that I provided contains a 46 grain 10mm Auto load, and its bullet is significantly larger than the .357 SIG's bullet. Could the .357 SIG handle a 40- to 43 grain bullet without jamming?

 

[rcmodel]

OK, my bad!

But again, what I said before is still true.

The .357 SIG has a very short case neck, very little case neck tension, and would not feed with a 40 grain bullet seated short enough to provide the necessary case neck tension.

Because it would get slammed back in the case during feeding.
And then, A Series Of Unfortunate Events would take place.

That's my story, and I'm sticking too it!

rc