Winchester® Super X® 45-70 Gov’t 405Gr CALFN 20 Round Box


SKU: WINX4570CB Categories: ,

These cartridges are designed for early American rifles and revolvers and have the reputation for being the ideal choice for cowboy action shooting. We are proud that the exacting standards of yesteryear have been combined with today’s advanced technology to bring you these highest quality centerfire cartridges.

Features (Refer to Image):

  1. Flat Nose Bullet
    • Suited for use in revolvers and rifles with tublular magazines
  2. Lead Bullet
    • To recreate frontier image



Bullet Type Cowboy Action Lead Flat Nose
Bullet Weight (g) ~26.2
Sectional Density ~0.276
Jacket Material Copper
Cartridge Case Brass
Cartridge Headstamp W-W 45-70 GOVT


Test Barrel Length (in) 24
Ballistic Coefficient (G1) 0.280

Velocity and Energy:

Distance (y) Muzzle 100 200 300 400 500
Velocity (fps) 1150 1043 968 910 862 819
Energy (ft-lbs) 1189 978 843 745 668 603

Short Range Trajectory:

Distance (y) 50 100 200 300
Drop (in) 3.2 0 -31 -98.9

Long Range Range Trajectory:

Distance (y) 100 200 300
Drop (in) 15.5 0 -52.4

Additional Information:

This iconic deer bullet has been around hunt camps across the country for decades.  Winchester’s most economical deer offering, Super-X Power-Point affords deer hunters a bullet with reliable expansion and accuracy in a stout line of popular calibers.

Ballistic Coefficient (BC): The “Ballistic Coefficient” or B.C. of a projectile (bullet) is a measure of its efficiency in flight or how well it is able to overcome air resistance.  The higher the ballistic coefficient, the less velocity a bullet will lose over distance – resulting in less drop at longer ranges and more energy on target.  So, for long range hunting or target shooting, the higher the B.C. the better.

Symbol X4570CB


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product.


45-70 Govt



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