10mm Auto vs .357 SIG Ammo Comparison - Ballistics Info & Chart – Foundry Outdoors
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10mm Auto vs .357 SIG Ammo Comparison - Ballistics Info & Chart

The following ammunition cartridge ballistics information and chart can be used to approximately compare 10mm Auto vs .357 SIG ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, or jacketing type. As such, the following is for comparative information purposes only and should not be used to make precise predictions of the trajectory, performance, or true ballistics of any particular 10mm Auto or .357 SIG rounds for hunting, target shooting, plinking, or any other usage. The decision for which round is better for a given application should be made with complete information, and this article simply serves as a comparative guide, not the final say.

For more detailed ballistics information please refer to the exact round in question or contact the manufacturer for the pertinent information. True 10mm Auto and .357 SIG ballistics information can vary widely from the displayed information, and it is important to understand that the particular characteristics of a given round can make a substantive difference in its true performance.


Caliber Type Velocity
(fps)
Energy
(ft-lb)
10mm Auto Handgun 1200 550
.357 SIG Handgun 1380 520






Velocity


As illustrated in the chart, 10mm Auto rounds - on average - achieve a velocity of about 1200 feet per second (fps) while .357 SIG rounds travel at a velocity of 1380 fps. To put this into perspective, a Boeing 737 commercial airliner travels at a cruising speed of 600 mph, or 880 fps. That is to say, 10mm Auto bullets travel 1.4 times the speed of a 737 airplane at cruising speed, while .357 SIG bullets travel 1.6 times that same speed.

Various calibers



Energy



Furthermore, the muzzle energy of a 10mm Auto round averages out to 550 ft-lb, while a .357 SIG round averages out to about 520 ft-lb. One way to think about this is as such: a foot-pound is a unit of energy equal to the amount of energy required to raise a weight of one pound a distance of one foot. So a 10mm Auto round exits the barrel with kinetic energy equal to the energy required for linear vertical displacement of 550 pounds through a one foot distance, while a .357 SIG round exiting the barrel has energy equal to the amount required to displace 520 pounds over the same one foot distance. As a rule of thumb, when it comes to hunting, muzzle energy is what many hunters look at when deciding on what caliber of firearm / ammunition to select. Generally speaking, the higher the muzzle energy, the higher the stopping power.

Again, the above is for comparative information purposes only, and you should consult the exact ballistics for the particular 10mm Auto or .357 SIG cartridge you're looking at purchasing.








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4 Comments

Ernest H. Wilson - Sep 30, 2019

Buy both… shoot both. I have both and I shoot both , daily. Buy Sig guns. I have lost count of the number of guns that failed me. It was a bitter disappointment and a financial lost. Who likes buying another gun to replace a dud pistol? I don’t.

Brian - Nov 13, 2019

Sig pistols use a proprietary inertia system which has a neat feature that fires a round when you drop the gun. Buy a Sig if you like expensive firearms that won’t work if they get a little dirty and if you like broken firing pins.

(Don’t buy a gun that fires when it’s dropped)

Paul Meleady Jr - Dec 06, 2019

The comparison was of the rounds. How Sig Sauer pistols got into the picture is confusing. I’ve been shooting 357 Sig rounds for a decade. NEVER have I had a problem with the round. I’ve shot it in my Glock literally thousands of times. Want to compare pistols? That would be another thread.

Craig - Apr 12, 2020

Good call Paul. Now on topic. Just look at the two rounds side by side. And all being >>>> equal <<<<. It is pretty obvious. Thank you in advance.

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