What barrel twist rate is required to properly stabilize the 25-grain V-Max bullets?

To properly stabilize this heavier 25-grain .172 projectile, your rifle barrel requires a twist rate of 1:9" or faster. If your barrel features a slower twist rate, you may experience stabilization issues and should consider lighter 15.5-grain or 20-grain alternatives.

What is the minimum impact velocity required to ensure reliable bullet expansion?

These V-Max bullets require a minimum impact velocity of 1,600 fps to achieve dramatic terminal fragmentation on small pests. If your target distance allows velocity to drop below this threshold, terminal performance and expansion will degrade significantly.

Are these bullets suitable for hunting medium-to-large game in the Australian bush?

No, these are strictly engineered for rapid-expansion varmint control and pest eradication such as rabbits, foxes, and wild dogs. They lack the mass and deeper penetration required for medium-to-large game like deer or feral pigs.

Do I need any special licensing to purchase these reloading components in Australia?

Yes, while these are unprimed, non-powdered reloading projectiles and do not require electrical compliance or SAA/RCM certifications, you must still comply with relevant state and territory firearms legislation. This typically means holding an appropriate firearms licence or dealer permit for purchasing and possessing ammunition components.

17 Cal Bullets - Hornady 17105

The Hornady 17 Cal .172" 25 gr V-MAX is an inert, unprimed reloading projectile component engineered specifically for small-calibre centrebrand rifle cartridges, including the .17 Hornet, .17 Remington Fireball, and .17 Remington. Designed for high-velocity varminting and precision target handloading, this flat-base projectile pairs a swaged lead core with an Advanced Manufacturing Process (AMP) copper jacket. The sharp polymer tip sits atop a hollow cavity, acting as a wedge upon target contact to initiate immediate, violent fragmentation without over-penetration.

Key Features

Rapid Fragmentation Design: Utilises a hard polymer tip positioned over an internal cavity to drive instant core expansion and dramatic breakup on contact.
Concentric AMP Jacket: Features a match-grade Advanced Manufacturing Process copper jacket with virtually zero wall-thickness variation to maintain flight stability and consistency.
Flat Base Profile: Provides a 0.671-inch overall length profile optimised for stable in-flight performance and tight bench-level groupings.
Inert Component: Supplied as a bare bullet projectile (100-count box) intended exclusively for custom handloading; not loaded ammunition.

Specifications

Calibre / Diameter: .17 Calibre / 0.172 inches (4.37 mm)
Bullet Weight: 25 grains (approx. 1.62 grams)
Bullet Profile: Polymer-tipped, Flat Base
Overall Length: 0.671 inches (approx. 17.04 mm)
Ballistic Coefficient: 0.230 (G1)
Sectional Density: 0.121
Expansion Threshold: 1,600 fps (approx. 488 m/s) minimum impact velocity
Jacket / Core Construction: Concentric AMP copper jacket with swaged lead core
Package Quantity: 100 projectiles

Who is the Hornady .172 17 Cal 25 Grain V-MAX Bullets 100 Pack for?

Varmint and pest eradication reloaders — requiring explosive terminal energy to humanely dispatch rabbits, foxes, and wild dogs with .17-calibre centrebrand rifles, relying on a 25-grain projectile engineered with a minimum 1,600 fps terminal expansion threshold to guarantee immediate breakup.
Precision handloaders — seeking flat trajectories and bench-level consistency from small-calibre varmint bullets, benefiting from a high 0.230 G1 ballistic coefficient combined with a concentric AMP jacket to minimise wind drift at extended ranges.

Less suitable for: Rifles with a barrel twist rate slower than 1:9", which cannot adequately stabilise this 25-grain profile and require lighter 15.5 gr or 20 gr varmint bullets; long-range shots where downrange impact velocity drops below 1,600 fps causing terminal fragmentation to degrade; or medium-to-large game hunting (such as feral pigs or deer), where controlled-expansion hunting bullets with higher mass and deeper penetration are required.

SKU	HN42699LP
Model #	17105
Brand	Hornady
Shipping Weight	1.0000kg

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Hornady 17105 V-Max Bullets 17 Cal 25 Grain 100 Pack

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