Accurate 4350 – Hodgdon Powder Co.

Last reviewed: 2026-04-17 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.

For handloaders working in the 4350 burn-rate window, Accurate 4350 powder brings a proven extruded-propellant geometry that meters through progressive presses and beam scales with minimal kernel bridging. The single-base formulation—short-cut extruded grains—produces consistent charge weights across throw-to-throw cycles, which translates to tighter extreme-spread velocity readings at the chronograph. Built for cartridges that sit between mild 6mm rounds and magnum-case .338s, this powder spans a broad application range without forcing you to stock multiple canisters.

Performance at a Glance

Accurate 4350 slots into recipes for the 243 Winchester, 6mm Remington, 270 Winchester, 280 Remington, 300 Winchester Short Magnum, and 338 Winchester Magnum—all cases that demand a medium-to-slow burn rate to achieve optimal case fill and barrel-time harmonics. The short-cut geometry reduces metering variance compared to long-stick extruded powders, a trait bench-rest and load-development shooters prioritize when chasing sub-MOA aggregates. Shop the full Gun powder selection for complementary burn rates and canister sizes.

All smokeless powders ship via ground carrier only; air freight is prohibited under DOT HazMat regulations. Accurate 4350 is sold in 1-pound and 8-pound canisters, with larger bulk orders subject to additional shipping surcharges and adult-signature requirements at delivery.

Matching It to Your Build

If you’re loading for a 243 Winchester varmint rifle, a 270 Winchester hunting bolt-gun, or a 300 WSM precision rig, Accurate 4350 offers the case-fill density and burn progression needed to reach published velocity targets without excessive pressure spikes. The single-base chemistry generates lower flame temperatures than double-base powders, which can extend throat life in high-volume barrels. Always start at the minimum charge weight listed in your load manual and work up in 0.3-grain increments, watching for pressure signs at each step.