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300 wsm (new norma)

300 WSM (New Norma)

x
50 pieces
per case

$75.00

Category: Rifle

2 in stock

$75.00 for 50 pieces $1.50/each
  • New NORMA headstamp brass cases.

All items listed as in stock are packaged and ready for immediate shipping.

We DO NOT DO ANY drop shipping.

ALL packages are shipped via USPS Priority Mail with tracking information emailed to you directly, shortly after your order is placed.  All orders will ship the following business day after the order is placed.

This item qualifies as a standard item and shipping is as follows:

  • 1-2 standard items ship for $10.60 via USPS Priority Mail Padded Flat Rate Envelope.
  • 3-5 standard items ship for $18.40 via USPS Priority Mail Medium Flat Rate Box.
  • 6-9 standard items ship for $24.75 via USPS Priority Mail Large Flat Rate Box.

Combine multiple standard items together to minimize shipping costs.

The overall cartridge length is 72.6 mm. The cartridge case length is 53.34 mm. The bullet diameter is .308 in (7.82 mm), which is common to all U.S. .30 caliber cartridges. The principle at work in the short magnum cartridge is the fitting of larger volumes of powder in closer proximity to the primer’s flash hole, resulting in more-uniform ignition. .300 WSM has a case capacity of 80 grains. The .30-06 Springfield holds 69 grains; .308 Winchester holds 56 grains; 30-30 Winchester holds 45 grains. The .300 Winchester Magnum has a case capacity of 93.8 grains. While providing ballistic performance nearly identical to that of the .300 Winchester Magnum, 300 WSM does this with about 14 grains less powder. The .300 WSM also headspaces off of the case shoulder, versus the older .300 Winchester Magnum’s belted head space design.

The advantage to this round is the ballistic performance is nearly identical to the .300 Winchester Magnum in a lighter rifle with a shorter action burning 8 – 10% less gunpowder. A disadvantage of cartridge case designs with relatively large case head diameters lies in relatively high bolt thrust levels exerted on the locking mechanism of the employed firearm. Also, in small ring actions the larger chamber diameter removes more steel from the barrel tenon, making it weaker radially.

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