Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Buffalo Bore Supercharged 243 Winchester ammo pushes the Barnes 85-grain TSX to 3350 feet per second with 2118 foot-pounds of muzzle energy — a load built for hunters who demand maximum performance from modern bolt-action rifles. The 243 Winchester cartridge balances flat trajectory and manageable recoil for medium game hunting at extended ranges. This Supercharged load runs at maximum SAAMI pressure specifications and is intended for firearms manufactured within the last two decades with chambers rated for full-pressure commercial ammunition.
Built for the Box
Buffalo Bore loads this cartridge with the Barnes Triple-Shock X bullet, an all-copper hollow point that expands into four cutting petals upon striking soft tissue. The monolithic copper construction — free of lead cores — retains nearly 100% of its original 85-grain weight through bone, hide, and muscle. Each round is assembled in the United States with new brass cases, non-corrosive boxer primers, and quality control standards that meet reloaders’ expectations. The 0.333 G1 ballistic coefficient and 0.206 sectional density deliver predictable wind drift and energy retention downrange.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 243 Winchester |
| Bullet weight | 85 grains |
| Bullet type | Barnes Triple-Shock X Solid Hollow Point |
| Muzzle velocity | 3350 fps |
| Muzzle energy | 2118 ft-lbs |
| Rounds/box | 20 |
| Case | New brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Lead-free | Yes — 100% copper |
| G1 BC | 0.333 |
| Sectional density | 0.206 |
| Intended use | Hunting (medium game) |
| Country of origin | United States |
This load is designed for whitetail, mule deer, pronghorn, and similar-sized game where deep penetration and controlled expansion are required. The all-copper bullet meets lead-free regulations in California and other jurisdictions restricting lead projectiles for hunting. Verify current headstamp and lot codes match your rifle’s chamber specifications before use. For more 243 ammo options, review our catalog of factory loads and match-grade offerings.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Observe the four fundamental rules of firearm safety at all times.
- Verify state and local hunting regulations regarding lead-free ammunition requirements before field use.
- Do not use this +P-equivalent load in firearms manufactured before 2000 or rifles with worn chambers — consult your firearm’s owner manual for pressure tolerance.
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