Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For whitetail and medium game hunters working open country or timber, the Sig Sauer Venari SP in 243 Winchester brings proven soft-point expansion at flat trajectories. This is 243 Winchester hunting ammo loaded with a 100-grain jacketed soft point bullet that exits the muzzle at 2960 feet per second and delivers 1945 foot-pounds of energy on target. The Venari line uses traditional soft-point construction — a lead core under a copper jacket, open at the nose for controlled expansion on impact. Brass cases are Boxer-primed, non-corrosive, and reloadable for handloaders who want to tune their own loads after the season.
Load Profile
Sig Sauer loads the Venari SP to commercial SAAMI specs. The 100-grain weight sits in the middle of the 243 Winchester’s common hunting range — lighter than 105-grain match bullets, heavier than varmint loads. At 2960 fps, this load produces a flat enough trajectory for 300-yard shots on deer while retaining enough mass for clean penetration through shoulder bones. The G1 ballistic coefficient of 0.405 means the bullet sheds velocity predictably in flight; zero at 200 yards puts you roughly 7 inches low at 300. Cases are U.S.-made brass; Sig notes that brass may ship nickel-plated or standard depending on component availability — function is identical.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 243 Winchester |
| Bullet weight | 100 grains |
| Bullet type | Jacketed soft point |
| Muzzle velocity | 2960 fps |
| Muzzle energy | 1945 ft-lbs |
| Rounds per box | 20 |
| Case | Brass (nickel or standard finish) |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| G1 ballistic coefficient | 0.405 |
| Intended use | Hunting (deer-size game) |
| Lead-free | No |
| Country of origin | USA |
Boxes ship 20 rounds — enough for sight-in, practice, and the hunt. For hunters running bolt-action rifles chambered in 243 ammo, the Venari SP offers a balance of speed, expansion, and terminal performance on whitetail, pronghorn, and hogs out to 300 yards.
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.
- Follow the four rules of firearm safety at all times — treat every firearm as loaded, never point the muzzle at anything you are not willing to destroy, keep your finger off the trigger until ready to fire, and be certain of your target and what lies beyond it.
- Verify current federal, state, and local ammunition regulations in your jurisdiction — some municipalities restrict lead-core projectiles or require permits for ammunition purchases.
- This ammunition contains lead, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65). Wash hands after handling; do not eat, drink, or smoke while handling ammunition.
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