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Hornady Superformance Ammunition, .300 Win Mag, 165-gr., GMX

Item # 428888
Customer Rating:

Key Features

  • Provides increased performance

  • Safe to use in ALL firearms

  • 100-200 fps FASTER than conventional ammunition

Our Price   $49.99

Availability: In Stock

  • Shipping restrictions apply. Details.
  • You must be at least 18 years old to purchase this item.
  • Local and/or state laws prohibit the shipment of ammunition to AK, CT, DC, HI, MA, Chicago IL, Los Angeles CA, Oakland CA, and San Francisco CA. IL and NY customers must ship orders to Gander Mountain stores. Other restrictions may apply.
  • Additional discounts do not apply.
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details & specs

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Product Description
hornady Superformance provides increased performance, and is safe to use in ALL firearms, including semi-autos, lever gun and pump actions. Superformance ammunition is 100-200 fps FASTER than any conventional ammunition on the market today, and achieves this performance in EVERY gun WITHOUT increases in felt recoil, muzzle blast, temperature sensitivity, fouling or loss of accuracy. 20 per box. Ships ground only.

Caliber .300 Win Mag
Bullet Weight 165 gr.
Bullet Type GMX
Muzzle Velocity 3425 fps
Quantity 20

product reviews

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by PowerReviews
Hornady Superformance Ammunition, 300 Win. Mag., 165GR, GMX

(based on 1 review)

Ratings Distribution

  • 5 Stars



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  • 1 Stars



Reviewed by 1 customer

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(0 of 1 customers found this review helpful)


This is the only product I will use.

By Don

from Laura , Ohio 45337

About Me 73 yrold beginner, Beginner, Casual/ Recreational, Enthusiast, Home Owner, Hunter

Verified Buyer


  • Accuracy
  • A one in pattern 100yds
  • Better than custome loads
  • Easy Maintenance
  • Easy To Use
  • I had better accuracy p


  • None to Date

Best Uses

  • Competitive Shooting
  • Great amo
  • Hunting
  • Shooting Ranges
  • Target Practice

Comments about Hornady Superformance Ammunition, 300 Win. Mag., 165GR, GMX:

I used the ammo for Hunting & target practice.
Very accurate at 100 yds. I held a 1 in. pattern my first practice. My accuracy was better than others using custom loaded ammo of the same caliber.I think
the higher fps helps the Hornady to shoot a little flatter.

  • Was this a gift?:
  • No

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