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Questions & Answers
Velocity and energy at 50 yds, 100 yds, 125 yds. Expert Answer

The Winchester VARMINT X RIFLE .243 Winchester 58 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition does not have a listed velocity or energy at 50 yards or 125 yards. However, the muzzle velocity is 3850FPS with 1909FT-Lbs of energy. At 100 yards it has a velocity of 3398FPS and energy of 1487FT-LBS.

by Hunter, Gear Expert, April 26, 2023
Customer Reviews
Helpful Positive Review
My Favorite Predator Round by jd, November 5, 2020
Shoots true. Never had any issues. If you’re a predator hunter who likes the 243 knock down power but also likes good fur this ones does the trick. Rarely have an exit wound to deal with. My favorite predator round and, as always, OP came thru and h...
Read More...
5/5 found this helpful
Most Recent Reviews
Winchester 243 ammo. In 58 grains is a keeper. by JD, Verified Owner, November 22, 2024
Great shooting in my hands rifle. Tried many other brands and very poor accuracy until these. Shoots 1/2 groups or less at 100 yards.
Most Recent Reviews
Winchester ammo by JD, Verified Owner, October 17, 2024
Ammo is reasonably priced and shoots great. Had very great groups from a single shot New England. Gun does not group well with any other ammo.
Most Recent Reviews
58gr 243 ammo by Coyote scout, Verified Owner, February 5, 2024
Great ammo and super accurate out of my ruger m77 243.
Read All 4 Reviews
Caliber:
.243 Winchester
Number of Rounds:
20
Bullet Type:
Rapid Expansion Polymer Tip (REPT)
Bullet Weight:
58 grain
Cartridge Case Material:
Brass
Muzzle Velocity:
3850 ft/s
Muzzle Energy:
1909 ft-lbs
Application:
Varmint
Package Type:
Box
Primer Style:
Centerfire
Lead Free:
No
Gun Type:
Rifle

Code: WQ-LAR-WIN390-X243P

MPN: X243P

UPC: 020892220010

Product No Longer Available

Product Info for Winchester Varmint X RIFLE .243 Winchester 58 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition

The Winchester Varmint X line of centerfire rifle ammunition continues to raise the bar with new advances in bullet design. The new X or X bullet is loaded with a polymer or alloy tip to maximize long range performance, and it still promotes rapid expansion. Its patent-pending design uses a thin jacket and an engineered sidewall profile to create explosive fragmentation upon impact. For more of the latest in shooting technology from Winchester, take a look at the Winchester X ammunition section. For more of the latest in shooting, check out the Winchester Centerfire section of our store.image

Features of Winchester Varmint X .243 Winchester 58gr. Rapid Expansion Polymer Tip Rifle Ammo - 40 Rounds:

  • Polymer Tip
  • Maximizes long range performance and promotes rapid expansion
  • Alloy Jacket
  • Thin jacket with engineered sidewall profile for explosive fragmentation
  • Lead Core
  • Designed for rapid fragmentation

Package Contents:

  • Winchester Varmint X Rifle 243 Winchester 58 Gr. Varmint X Polymer Tip

Firearm Case

127 / 27
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Shooting Accessories

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Ammunition

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Winchester Varmint X RIFLE .243 Winchester 58 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition Unavailable & Discontinued Models

List of Unorderable Models

  • Winchester Varmint X RIFLE .243 Winchester 58 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammo, 20 Rounds, X243P , MPN: X243P , UPC: 020892220010 , Code: WQ-LAR-WIN390-X243P
  • Winchester Varmint X RIFLE .243 Winchester 58 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammo, 40 Rounds, X243PXL , MPN: X243PXL , UPC: 020892221376 , Code: WQ-LAR-WIN390-X243PXL
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Last updated 2026-07-14 UTC.