.204 Ruger Load Data & Reloading Guide

Rifle

Also known as: .204 Winchester, 5.2×43mm

About .204 Ruger

The .204 Ruger caliber was introduced in 2004 as a joint development between Hornady and Ruger. It was designed to satisfy demand for a high-velocity, flat-shooting cartridge suitable for small to medium game and varmint hunting. It is based on the .222 Remington Magnum case, which has been necked down to accept the smaller .204-inch diameter bullet. This design allows the .204 Ruger to achieve exceptional velocity and ballistic performance, setting it apart from other cartridges in its class.

Key technical characteristics of the .204 Ruger include a case length of 1.850 inches and an overall cartridge length of approximately 2.260 inches. It typically uses bullets ranging from 24 to 45 grains, with the most common weights being 32 and 40 grains. The cartridge is known for its ability to generate muzzle velocities exceeding 4,000 feet per second, particularly with the lighter bullet weights. With its small diameter and high velocity, the .204 Ruger is renowned for its flat trajectory, making it an excellent choice for precision shooting at extended ranges.

Ballistic performance of the .204 Ruger makes it an ideal candidate for varmint hunting, as it achieves rapid expansion upon impact while minimizing ricochet risks. Its light recoil and high-speed performance also make it suitable for novice shooters and competitive shooters in disciplines such as benchrest and varmint shooting. The caliber is efficient on small game, including prairie dogs, groundhogs, and coyotes.

For reloaders, the .204 Ruger presents several advantages. Its cases are durable and can be reloaded multiple times with proper care. The cartridge’s relatively small powder charge compared to larger calibers results in efficient use of resources, and a wide selection of bullets is available to fine-tune performance for specific applications. Reloaders can also customize loads to optimize accuracy and velocity, tailoring them to individual firearms and shooting conditions. Overall, the .204 Ruger provides a powerful, precise, and flexible platform for a range of shooting tasks.

Technical Drawing

.204 Ruger cartridge dimensions, C.I.P.L1 = 39.08 mm, L2 = 41.91 mm, L3 = 46.99 mm, L6 = 57.4 mmL1 = 39.08 mmL2 = 41.91 mmL3 = 46.99 mmL6 = 57.40 mm60.0°

Based on C.I.P., the max. allowed case length is 1.850 in / 46.99 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 58,740 PSI / 4,050 bar.

Technical Specifications

Maximum Pressure:58740 PSI / 4050 bar
Case Volume:32 Grains of Water
Primer Size:Small Rifle (SR)
Safety Standard:C.I.P. (Datasheet)
Bore Area:20.748 mm²
Barrel Diameter:0.204" / 5.2 mm
L1:1.539" / 39.08 mm
L2:1.650" / 41.91 mm
L3:1.850" / 46.99 mm
L6:2.260" / 57.40 mm

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Brass Case Capacities

The following table shows the case capacity (Grains of Water) for brass in cartridge .204 Ruger where we have data (number of datapoints in brackets).

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Hornady (3)32.2
Norma (1)••.•
Starline Brass (1)••.•

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Standard Load Data — .204 Ruger

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.

Community Loads — .204 Ruger

Here are some popular loads for .204 Ruger:

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Filter:
BulletPowderBarrel (in)Charge (gr)Case Volume (GoW)OAL (in)Max. Pressure (psi)Muzzle Velocity (fps)
.204 | 28gr | Lehigh Defense Controlled Chaos (28gr)
Reload
RS 36
24.023.131.02.2352,547 (89%)3904
M.204 | 32gr | Hornady V-MAX (32gr)
Hodgdo
Benchmark
26.0••.•32.82.2657,740 (98%)3881
M.204 | 32gr | Hornady V-MAX (32gr)
ADI
Benchmark 8208
24.1••.•32.62.2656,710 (97%)3839
.204 | 32gr | Hornady V-MAX (32gr)
Allian
Reloder-15
26.0••.•32.82.3046,934 (80%)3747
.204 | 32gr | Hornady V-MAX (32gr)
Allian
Alliant Reloder-10x
22.0••.•32.02.2552,784 (90%)3734
.204 | 32gr | Hornady V-MAX (32gr)
Hodgdo
Benchmark
26.0••.•32.82.2647,935 (82%)3691
.204 | 32gr | Hornady V-MAX (32gr)
Hodgdo
H4198
22.024.433.42.2951,793 (88%)3655
.204 | 32gr | Hornady V-MAX (32gr)
Vihtav
N133
26.024.531.02.2644,179 (75%)3599
M.204 | 32gr | Nosler Ballistic Tip Varmint (32gr)
Allian
AR-Comp
24.0••.•33.82.2556,362 (96%)3934
.204 | 32gr | Nosler Ballistic Tip Varmint (32gr)
Allian
AR-Comp
24.0••.•33.82.2547,500 (81%)3780
.204 | 35gr | Berger FB Varmint (35gr)
Hodgdo
Hodgdon H322
21.4••.•32.02.2352,257 (89%)3602
.204 | 35gr | Berger FB Varmint (35gr)
Vihtav
Vihtavuori N140
22.0••.•32.02.2347,958 (82%)3481
M.204 | 39gr | Sierra Blitzking BT (39gr)
Hodgdo
Benchmark
26.0••.•32.82.3055,259 (94%)3599
M.204 | 39gr | Sierra Blitzking BT (39gr)
Hodgdo
Benchmark
26.0••.•32.82.3054,650 (93%)3589
M.204 | 39gr | Sierra Blitzking BT (39gr)
Hodgdo
Benchmark
26.0••.•32.82.3054,041 (92%)3576
M.204 | 39gr | Sierra Blitzking BT (39gr)
Hodgdo
Benchmark
26.0••.•32.82.3053,447 (91%)3566
M.204 | 39gr | Sierra Tipped VarmintKing (39gr)
Vihtav
N530
20.0••.•32.02.2657,058 (97%)3412
.204 | 39gr | Speer TNT (39gr)
ADI
Benchmark 8208
24.1••.•32.62.2650,517 (86%)3491
.204 | 40gr | Hornady V-MAX (40gr)
Hodgdo
H335
22.0••.•32.02.2650,520 (86%)3412
.204 | 40gr | Hornady V-MAX (40gr)
Hodgdo
BL-C2
22.0••.•32.02.2640,995 (70%)3225

Frequently Asked Questions

The maximum pressure for .204 Ruger is 58,740 psi | 4,050 bar.

.204 Ruger typically uses a Small Rifle (SR) primer.

The case capacity of .204 Ruger is approximately 32 grains of water (H₂O).