.300 WSM for Sale – Buy .300 WSMs

Find the .300 WSM ammo and firearms you're looking for right here at GunBroker.com, the world's largest online auction site dedicated to firearms, hunting, shooting and accessories. We aim to provide you with all the necessary information you need to make an informed .300 WSM purchase. Explore the history, ballistics, and technical specifications of .300 WSM ammo, then browse the listings of our trusted sellers to make your purchase.

.300 WSM History & Ballistics

.300 WSM, or 300 Winchester Short Magnum, is a centerfire short-magnum cartridge developed by Winchester in 2001 in order to fit more powder in closer proximity to the primer’s flash hole. The performance of the .300 WSM is similar to that of its older counterpart, the .300 Winchester Magnum, but the .300 WSM requires a lighter rifle and shorter action.

The long range and flat trajectory of .300 WSM rounds make them popular ammo for hunting elk, mule deer, whitetail, and similar game.

.300 WSM Specifications

A .300 WSM bullet’s diameter is .308 inches (7.62 mm), extending to the neck (.344 inches, 8.7 mm) and to the base (.555 inches, 14.1 mm) and rim (.535 inches, 13.6 mm). The case is 2.100 inches (53.3 mm) long, 2.860 inches (72.6 mm) in overall length. The rifling twist is 1:10. The primer is a large rifle magnum variety.

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We hope you've found this information on .300 WSM ammo helpful and informative. If you had trouble finding the exact .300 WSM ammo you were looking for, be sure to check back again soon. Auctions and listings are always being added and updated.

Don't stop there; we've got plenty more to offer. We're the Internet's largest auction retailer of guns for a reason, after all. Check out our wide selection of Rifle Scopes to go with your .300 WSM ammo and firearms. Or take a look at the listings for comparable firearms and ammo from Winchester to see what else is available.

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300 WSM For Sale


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Item   Title      Click Headers to Sort Quantity Bids Price Time Left
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80 $579.99 88d 5h +
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60 $493.78 88d 5h +
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250 $748.00 55d 14h +
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180 $1,029.99 55d 14h +
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220 $795.65 55d 14h +
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240 $1,141.21 55d 12h +
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250 $629.86 48d 8h +
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270 $557.99 47d 10h +
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80 $29.10 46d 12h +
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60 $879.15 46d 12h +
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30 $952.14 46d 12h +
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60 $36.93 46d 12h +
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270 $530.44 46d 12h +
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20 $490.19 46d 12h +
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10 $2,895.00 46d 11h +
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250 $1,029.99 46d 9h +
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220 $829.99 46d 9h +
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210 $779.99 46d 9h +
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80 $949.99 46d 9h +
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30 $772.55 20d 6h +
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40 $475.82 20d 6h +
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130 $428.93 20d 6h +
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100 $478.80 19d 12h +
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100 $639.53 19d 11h +
680266715
 
 
 
 
20 $1,154.06 19d 9h +
680266666
 
 
 
 
40 $857.32 19d 9h +
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70 $528.80 19d 9h +
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60 $1,159.79 19d 9h +
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180 $861.59 19d 9h +
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90 $475.82 19d 9h +
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20 $929.99 19d 9h +
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10 $2,650.00 11d 4h +
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10 $1,235.50 10d 19h +
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10 $9,715.50 9d 14h +
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