Alliant Pro Reach represents a specialized advancement in the high-performance shotshell and handgun propellant market, specifically engineered to provide superior velocity for the 20 gauge and 28 gauge shooter. Developed by Alliant Powder to meet the needs of competitive clay target shooters and upland hunters, Alliant Pro Reach is designed to provide the “reach” required for long-distance shots while maintaining consistent patterns and manageable pressures. In the contemporary reloading landscape, where sub-gauge popularity continues to rise, this propellant serves as a technical bridge between standard target powders and heavy field propellants, offering a unique burn rate that maximizes the ballistic potential of smaller hulls.
The reputation of Alliant Pro Reach is built upon its ability to achieve significantly higher velocities than traditional powders like Alliant Unique or Alliant 20/28 without exceeding safe pressure limits. This is particularly advantageous for hunters targeting fast-moving game at the edge of typical sub-gauge ranges. Beyond its primary role in shotshells, Alliant Pro Reach has found a dedicated following among handgun reloaders who require a mid-range burn rate for standard-pressure loads. This guide provides an authoritative technical analysis of the properties, applications, and loading characteristics of Alliant Pro Reach, detailing why it is a premier choice for those seeking maximum downrange energy.
Executive Summary
- Main Application – High-velocity 20 gauge and 28 gauge target and field loads.
- Key Advantage – Superior velocity potential with high energy density.
- Burn Rate Position – Mid-range; positioned between Alliant 20/28 and Alliant Herco.
- What This Guide Covers – Technical specifications, burn rate analysis, comparative standing, and equipment optimization.
Best For: Upland hunters and competitive sub-gauge shooters requiring maximum velocity and pattern consistency for long-range targets.
Powder Description & Technical Profile
Alliant Pro Reach is a double-base, flake propellant characterized by its high nitrocellulose and nitroglycerin content. As a double-base powder, it possesses a higher energy density than single-base alternatives, allowing it to generate the gas volumes necessary for high-velocity payloads without requiring excessive charge weights. The physical geometry of Alliant Pro Reach consists of small, uniform flakes that have been treated with a specific deterrent package to control the initial pressure spike. This chemical profile is optimized to maintain gas pressure throughout the barrel, providing a sustained push that is essential for reaching the 1,300 FPS plus velocities often desired in modern 20 gauge hunting loads.
One of the defining technical traits of Alliant Pro Reach is its ability to burn cleanly even at the higher end of its pressure range. Many legacy flake powders are notorious for leaving “sooty” residue in the action and barrel, but the modern formulation of Alliant Pro Reach incorporates advanced deterrents and cleaner-burning energy sources. This results in reduced fouling in semi-automatic actions, which is a critical factor for hunters in the field who may not have the opportunity for immediate maintenance. Furthermore, the powder’s high energy density ensures that it occupies an ideal volume in 20 gauge and 28 gauge hulls, facilitating proper wad column height and consistent crimps.
Pros & Cons
- Pro – Exceptional velocity potential for 20 gauge and 28 gauge applications.
- Pro – Cleaner-burning formulation compared to older mid-range flake powders.
- Pro – High energy density allows for efficient case fill in small-bore rounds.
- Pro – Excellent pattern consistency at extended ranges.
- Con – Flake geometry requires high-quality measures to ensure sub-0.1 grain consistency.
- Con – Not suitable for ultra-light target loads where faster powders are more efficient.
- Con – Generally requires standard or magnum primers for absolute ignition reliability.
Technical Characteristics
The physical and chemical properties of Alliant Pro Reach are engineered to bridge the gap between target and field performance. Its density is specifically tuned to work with modern plastic hulls and standard wad configurations.
| Feature | Specification |
| Manufacturer | Alliant Powder |
| Powder Type | Double-Base |
| Grain Shape | Flake |
| Base Type | Nitroglycerin / Nitrocellulose |
| Relative Burn Rate Category | Mid-Range Handgun / Medium-Slow Shotshell |
| Density (g/cc) | 0.535-0.550 |
| Primary Feature | High-Velocity “Reaching” Performance |
The bulk density of Alliant Pro Reach is approximately 0.545 grams per cubic centimeter. This places it in a specialized category where it is bulky enough to prevent the “low powder” issues in 20 gauge hulls but dense enough to avoid the excessive compression that can lead to crimp tenting. For the handgun reloader, this density allows for good visual verification in cases like the 45 ACP or 44 Special.
Temperature Stability & Burn Rate Analysis
In the hierarchy of propellants, Alliant Pro Reach occupies a specific niche on the burn rate chart. It is positioned as being slightly slower than Alliant 20/28 and is closely related in speed to Alliant Unique and Hodgdon Universal. This mid-range speed is critical for its primary mission; it allows the powder to accelerate 7/8 oz and 1 oz 20 gauge loads to high velocities while keeping the peak chamber pressures well within the safe operating limits of modern firearms. By staying behind the shot column longer, Alliant Pro Reach provides the sustained gas volume needed for superior muzzle energy.
Temperature stability for Alliant Pro Reach is considered good for a high-energy double-base flake powder. While it does not feature the specialized “Extreme” technology found in some Hodgdon rifle powders, its modern formulation is designed to minimize the standard velocity shifts seen in older double-base powders. In testing, Alliant Pro Reach shows less velocity deviation across a 20-100 degree Fahrenheit range than legacy powders such as Alliant Herco. However, because it is a high-performance propellant, reloaders should always verify their loads when transitioning from summer practice to late-season winter hunts. Compared to a benchmark of stability like Alliant 20/28, Alliant Pro Reach is slightly more sensitive to extreme heat but offers a higher velocity ceiling.
Powder Comparison
When selecting Alliant Pro Reach, reloaders are often choosing between it and other established mid-range powders for sub-gauge and handgun use.
| Powder | Relative Burn Rate | Density | Primary Cartridges |
| Alliant Pro Reach | Medium-Slow (Subject) | 0.545 | 20 gauge, 28 gauge |
| Alliant 20/28 | Slightly Faster | 0.515 | 20 gauge Target |
| Alliant Unique | Similar | 0.480 | 45 ACP, 38 Special |
| Hodgdon Universal | Similar | 0.515 | 28 gauge, 9mm Luger |
Compared to Alliant 20/28, Alliant Pro Reach provides the extra gas volume needed for field loads where 1,250-1,300 FPS is the goal. Against Alliant Unique, it is significantly cleaner-burning and offers much better metering in automated equipment. While Hodgdon Universal is a single-base competitor with a similar burn rate, Alliant Pro Reach often produces higher velocities in 20 gauge field applications due to its higher energy density. For those seeking the ultimate in sub-gauge “reach,” Alliant Pro Reach is the specialized choice.
Performance, Metering & Equipment
The physical performance of Alliant Pro Reach in reloading machinery is a significant improvement over older flake propellants. The flakes are smaller and more uniform, which facilitates better flow through volumetric powder measures. When using a high-quality tool such as the Lyman Brass Smith Powder Measure, Alliant Pro Reach typically maintains a charge weight variance of less than 0.1 grains. This level of consistency is critical for maintaining low standard deviations in velocity, which is the primary driver of consistent pattern density.
For high-volume production on a progressive press like the Dillon XL 750, reloaders should ensure their powder bar is clean and properly adjusted. Because it is a flake powder, it can be sensitive to static in extremely dry environments. Using a static-reducing dryer sheet or a grounded powder measure can help maintain the fluidity of the drop. For those using a single-stage press like the RCBS Rock Chucker Supreme, the reloader will find that the powder settles well in the case, making visual inspection a simple task. For ultimate precision in developing match-grade handgun loads, using the RCBS ChargeMaster Supreme Digital Powder Scale and Dispenser ensures that every charge is exact.
Recommended Cartridges and Applications
While designed as a specialized sub-gauge shotshell powder, Alliant Pro Reach is highly effective across several standard handgun calibers where mid-range performance is desired.
| Cartridge | Primary Application |
| 20 gauge | High-Velocity 7/8 oz & 1 oz Field Loads |
| 28 gauge | 3/4 oz & 7/8 oz Maximum Velocity Loads |
| 45 ACP | High-Velocity 230 grain Ball & Target |
| 44 Special | Traditional & Target Loads |
| 38 Special | +P Defensive & Service Loads |
| 40 SW | Standard Training & Practice Loads |
| 9mm Luger | Standard Velocity Target Loads |
In the 20 gauge, Alliant Pro Reach is the definitive choice for hunters using 1 oz of shot for pheasant or other upland game. It provides the necessary pressure curve to cycle semi-automatic actions with absolute reliability. In the 45 ACP, it serves as a modern alternative to Unique, offering similar velocities with a cleaner burn and better metering. For the 38 Special, it provides the gas volume needed for +P loads, ensuring that defensive projectiles reach their intended expansion threshold.
Bullets
Choosing the right bullet for Alliant Pro Reach in handgun applications involves matching the projectile to its mid-to-slow burn speed. It is most efficient with standard-weight or heavy-for-caliber bullets.
| Bullet Model | Weight Range | Recommended Application |
| Sierra Sports Master | 230 grain | 45 ACP Performance |
| Nosler Partition | 158 grain | 357 Magnum (Moderate) |
| Hornady Interlock | 158 grain | 38 Special Target |
| Sierra MatchKing | 125 grain | 9mm Precision Target |
| Barnes TSX | 140 grain | 357 Magnum Field Loads |
For the 45 ACP, pairing Alliant Pro Reach with a heavy 230 grain Sierra Sports Master creates a load that is both clean-burning and powerful. The sustained pressure curve ensures that the bullet is accelerated uniformly, which is a prerequisite for match-grade accuracy. In the 38 Special, the use of a 158 grain Hornady Interlock allows the powder to reach its ideal operating pressure, resulting in very low velocity spreads.
Primers
Because Alliant Pro Reach is a double-base flake powder, it requires a robust ignition source to ensure that the deterrent coatings are bypassed uniformly. While standard primers are often used in mild conditions, magnum primers or high-output shotshell primers (like the 209) are essential for maintaining consistency in cold weather or with maximum charge weights.
Recommended Primers for Alliant Pro Reach:
- Winchester WLP (Large Pistol) – Versatile for 45 ACP.
- CCI 300 (Large Pistol) – Standard for 44 Special.
- CCI 500 (Small Pistol) – The “go-to” for 9mm Luger.
- Winchester WSP (Small Pistol) – Consistent ignition for 38 Special.
- Federal 100 (Small Pistol) – Highly sensitive for revolvers with light springs.
- Federal 150 (Large Pistol) – Reliable choice for target loads.
- CCI 350 (Large Pistol Magnum) – Only for heavy 44 Magnum crossover loads.
- Sellier & Bellot V360157 (Small Pistol) – Cost-effective for high-volume loading.
In shotshell applications, the primer choice is usually dictated by the specific hull (e.g., Remington or Winchester), but in handgun reloading, the CCI 300 and Winchester WLP are the most common pairings for Alliant Pro Reach. These primers provide a consistent flame front that ensures the mid-range flake column is ignited from the base up, which is crucial for achieving the low standard deviations required for competitive sub-gauge shooting.
Conclusion & Expert Verdict
Alliant Pro Reach is an essential tool for the reloader who values maximum velocity and pattern integrity in sub-gauge platforms. By addressing the specific needs of the 20 gauge and 28 gauge shooter, Alliant has produced a propellant that is as efficient as it is effective. While it is not a “universal” powder for every light-target application, its performance within its high-velocity niche is arguably unmatched in the current market. Its clean-burning nature and improved metering characteristics make it a joy to work with on the bench and a reliable performer in the field.
The true value of Alliant Pro Reach lies in its ballistic integrity. In the high-stakes world of competitive clay shooting and upland hunting, having a propellant that you can trust implicitly is an invaluable asset. Whether you are aiming for a long-range crossing bird or developing a high-performance 45 ACP load, Alliant Pro Reach provides the gas volume and temperature stability required to reach your goals. It remains a top-tier choice for any reloader who demands the absolute maximum from their sub-gauge and mid-range handgun calibers.
Expert Pro Tip: When loading Alliant Pro Reach in 20 gauge field loads, pay close attention to your wad pressure. Because flake powders like Alliant Pro Reach can be slightly position-sensitive in large hulls, ensuring a consistent and firm seat of the wad on the powder column is the secret to achieving single-digit velocity standard deviations. A consistent crimp depth of 0.055-0.060 inches will further enhance the ignition consistency and ensure your “Pro Reach” loads perform with the precision of factory match ammunition.
