.20 Practical Load Data & Reloading Guide

Rifle

About .20 Practical

The .20 Practical is a wildcat cartridge derived from the .223 Remington case, specifically engineered for varmint hunting and competitive shooting. Developed by firearms enthusiasts seeking to combine the high velocity of the .223 Remington with the superior ballistic coefficients of .20 caliber bullets, this cartridge offers enhanced performance in a variety of shooting scenarios. Its genesis aligns with the broader trend in the wildcatting community of necking down existing popular cartridges to accommodate smaller diameter bullets, optimizing their speed and accuracy.

Key technical characteristics of the .20 Practical include the retention of the .223 Remington's overall case length and shoulder angle while the neck is resized to accept .204 inch diameter bullets. The cartridge typically uses light to medium weight bullets ranging from 32 to 40 grains. These bullets exhibit high ballistic efficiency and minimal wind drift, making the .20 Practical an excellent choice for precision shooting over long distances.

Ballistically, the .20 Practical boasts impressive performance, often capable of achieving muzzle velocities exceeding 4,000 feet per second with lighter bullets. This provides a flatter trajectory compared to traditional .223 loads, ideal for accurately targeting small game at extended ranges. The combination of high speed and aerodynamic bullets results in effective terminal performance on small varmints, while also appealing to competitive shooters aiming for precision and consistency in target shooting contexts.

For reloaders, the .20 Practical offers distinct advantages. Utilizing readily available .223 Remington brass minimizes costs and simplifies brass preparation. The caliber's efficiency means that reloaders can achieve high velocities with relatively modest powder charges, allowing not only for cost-effective shooting but also for prolonged barrel life. Overall, the .20 Practical remains a versatile option for reloaders seeking to enhance the performance of the ubiquitous .223 case for specialized applications.

Technical Drawing

.20 Practical cartridge dimensions, C.I.P.L1 = 36.52 mm, L2 = 39.55 mm, L3 = 44.7 mm, L6 = 57.4 mmL1 = 36.52 mmL2 = 39.55 mmL3 = 44.70 mmL6 = 57.40 mm46.0°

Based on Wildcat, the max. allowed case length is 1.760 in / 44.70 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 55,000 PSI / 3,792 bar.

Technical Specifications

Maximum Pressure:55000 PSI / 3792 bar
Case Volume:30 Grains of Water
Primer Size:Small Rifle (SR)
Safety Standard:Wildcat
Bore Area:20.75 mm²
Barrel Diameter:0.204" / 5.2 mm
L1:1.438" / 36.52 mm
L2:1.557" / 39.55 mm
L3:1.760" / 44.70 mm
L6:2.260" / 57.40 mm

Start Calculating to Develop your own Load Data for .20 Practical

Use our professional ballistics calculator to develop safe and accurate load recipes for .20 Practical.

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Standard Load Data — .20 Practical

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

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26 gr
30 gr
32 gr
36 gr
39 gr
40 gr
45 gr
55 gr

Frequently Asked Questions

The maximum pressure for .20 Practical is 55,000 psi | 3,792 bar.

.20 Practical typically uses a Small Rifle (SR) primer.

The case capacity of .20 Practical is approximately 30 grains of water (H₂O).