Can I use these Hornady 174 Grain FMJ-BT bullets for deer or feral pig hunting in the Australian bush?

No, these are full metal jacket boat tail bullets that do not expand upon impact. Under ethical hunting standards and Australian regulations, FMJ projectiles are prohibited for medium-to-large game hunting, meaning this 100 pack (Model 3131) is strictly intended for target shooting and service rifle competitions.

Are these .3105 diameter bullets safe to shoot out of a standard .308 Winchester or .30-06 Springfield rifle?

No, they are specifically engineered with a .3105-inch diameter for nominal .311 inch to .312 inch groove diameter barrels like the .303 British. Loading a .3105 inch projectile into a standard .308 bore barrel can cause dangerous, excessive chamber pressures.

What shell holder should I use when reloading these .303 British bullets on my press?

For seamless reloading setup with Hornady equipment, you can pair your dies with the Hornady 390573 Shell Holder #33, which is specifically designed for .303 British cases.

.303 Cal Bullets - Hornady 3131

The Hornady .3105 303 Cal 174 Grain FMJ-BT Bullet (Model #3131) is an unpowered reloading projectile designed specifically for handloading .303 British and compatible .310-inch to .312-inch bore military calibres. Weighing 174 grains (11.27 grams) with a .3105-inch diameter, this component projectile closely replicates the original military Mk VII ball ammunition specification used in Lee-Enfield No. 1 Mk III and No. 4 service rifles. It features an aerodynamically tapered boat tail design and Hornady's Advanced Manufacturing Process (AMP) jacket, delivering consistent concentricity and balanced flight stability across target distances from 50 metres out to beyond 800 metres.

Key Features

AMP Jacket Technology: Advanced Manufacturing Process jacket design eliminates wall-thickness variations and runout, preventing core-jacket separation under high-velocity firing.
Boat Tail (BT) Profile: Tapered base reduces aerodynamic drag in flight, generating a 0.470 G1 ballistic coefficient for flat trajectories and dependable downrange stability.
Mk VII Ball Specification Match: 174-grain weight and traditional full metal jacket profile mirror standard historical military service loads.
Broad Bore Compatibility: Sized at .3105 inches for .303 British chambers as well as compatible 7.7×58mm Japanese, 7.62×54mmR, and select 7.62×39mm bores.

Product Specifications

Manufacturer Part Number: 3131
Calibre Category: .303 Calibre
Bullet Diameter: .3105 in
Bullet Weight: 174 grains (11.27 g)
Overall Bullet Length: 1.263 in
Profile: Full Metal Jacket Boat Tail (FMJ-BT)
Ballistic Coefficient (G1): 0.470
Sectional Density: 0.255
Package Quantity: 100 projectiles per box

Who is the Hornady .3105 303 Cal 174 Grain FMJ-BT Bullets 100 Pack – For 303 British for?

Historical military rifle competitive shooters — requires authentic military ballistics matched by this .303 calibre reloading bullet, which replicates standard Mk VII service trajectories using a 174-grain weight and a 0.470 G1 ballistic coefficient.
Lee-Enfield rifle reloaders — requires a dedicated .3105-inch projectile diameter designed to fit nominal .311-inch to .312-inch groove barrels found on No. 1 Mk III and No. 4 service rifles.
Service rifle target shooters — relies on the 100-pack component projectile's boat-tail profile and 0.470 G1 ballistic coefficient to minimise base drag during competitive target matches extending from 50 metres past 800 metres.

Less suitable for: Medium-to-large game hunting where non-expanding FMJ bullets are prohibited; hunters targeting game like deer, pigs, or goats should select expanding soft-point or polymer-tipped hunting projectiles. It is also unsuitable for rifles with standard .308-inch bore barrels due to excessive chamber pressure risks, as well as worn Lee-Enfield barrels with groove diameters exceeding .314 inches, which require oversized cast lead or specialty .312- to .313-inch projectiles.

SKU	HN43001LP
Model #	3131
Brand	Hornady
Shipping Weight	1.0000kg

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Hornady 3131 .303 Cal Bullets 174 Grain Fmj-Bt 100 Pack

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