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The Ultimate Reloading Manual
Wolfe Publishing Group
  • alliant reloading data
  • reloading brass
  • shotshell reloading
The Ultimate Reloading Manual

.20 VarTarg / .20 VT (in a BSA No. 12 Cadet Martini)

.20 VarTarg / .20 VT (in a BSA No. 12 Cadet Martini)
Warning! A BSA No. 12 Cadet Martini single-shot rifle with a 22 1/2-inch, heavy-contour barrel and a Leupold 12x 50mm scope was used to test all loads. New resized Lapua .221 Remington Fireball brass and Federal Premium GM205M Small Rifle Match primers were used throughout.
Cartridge History

.20 VarTarg (.20 VT): Precision Performance in a BSA No. 12 Cadet Martini

The .20 VarTarg, or .20 VT, is a compact and efficient wildcat cartridge that has earned a strong following among precision shooters and varmint hunters. Built on the .221 Fireball case necked down to .20 caliber, it delivers exceptional accuracy, mild recoil, and flat trajectories. Its pairing with the classic BSA No. 12 Cadet Martini action highlights its versatility, blending a modern wildcat design with a historic rifle platform to create a truly unique shooting experience.

The BSA No. 12 Cadet Martini, originally designed as a single-shot training rifle, offers a rock-solid action and excellent inherent accuracy. Converting it to the .20 VarTarg transforms the rifle into an efficient and highly capable small-bore varminting or target-shooting platform. The Martini action’s simplicity, strength, and smooth operation complement the cartridge’s efficiency, resulting in a combination that is both practical and enjoyable to shoot.

In this configuration, the .20 VarTarg delivers velocities exceeding 3,600 feet per second with lightweight projectiles, providing flat-shooting performance and minimal wind drift—ideal for precision varminting or target work. Its low recoil pairs perfectly with the Cadet Martini’s compact form factor, allowing for a comfortable and highly controllable shooting experience, even during extended sessions in the field or at the range.

Handloading for the .20 VarTarg in a BSA No. 12 Cadet Martini remains straightforward. Cases are formed from .221 Fireball brass with minimal effort, and careful load development ensures reliable, consistent performance tailored to this unique platform. The combination of an efficient cartridge and a rugged single-shot action creates a rifle setup that is as practical as it is distinctive.

In the field, this pairing excels at varmint control, offering the precision and terminal performance needed for ethical, effective shots on small pests. At the bench, it delivers the sub-MOA accuracy that shooters expect from the .20 VarTarg, making it equally suitable for casual target practice or precision shooting applications.

Overall, chambering the .20 VarTarg in a BSA No. 12 Cadet Martini demonstrates the adaptability of this wildcat cartridge. It merges a historically significant rifle with a modern, efficient cartridge, resulting in a platform that is as enjoyable to shoot as it is capable. This combination stands out as a testament to the .20 VarTarg’s versatility and enduring appeal.

Source: Wolfe Publishing

Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
24 Hornady NTX Vihtavuori VV-N120 Subscribe 3814
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.72
24 Hornady NTX Vihtavuori VV-N120 Subscribe 3911
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .56
24 Hornady NTX Vihtavuori VV-N120 Subscribe 4031
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .68
24 Hornady NTX Accurate AAC-2200 Subscribe 3597
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.33
24 Hornady NTX Accurate AAC-2200 Subscribe 3647
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.34
24 Hornady NTX Accurate AAC-2200 Subscribe 3765
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .93
24 Hornady NTX Accurate LT-30 Subscribe 3544
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .69
24 Hornady NTX Accurate LT-30 Subscribe 3663
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .78
24 Hornady NTX Accurate LT-30 Subscribe 3764
Remarks: compressed load; COAL: 1.830 inches; 5-shot 100-yard group (inches): .90
32 Nosler Ballistic Tip Ramshot X-Terminator Subscribe 3008
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.16
32 Nosler Ballistic Tip Ramshot X-Terminator Subscribe 3135
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.94
32 Nosler Ballistic Tip Ramshot X-Terminator Subscribe 3186
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .68
32 Nosler Ballistic Tip Hodgdon CFE BLK Subscribe 3466
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .85
32 Nosler Ballistic Tip Hodgdon CFE BLK Subscribe 3542
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): 1.78
32 Nosler Ballistic Tip Hodgdon CFE BLK Subscribe 3635
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .67
32 Nosler Ballistic Tip Vihtavuori VV-N130 Subscribe 3267
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .60
32 Nosler Ballistic Tip Vihtavuori VV-N130 Subscribe 3328
Remarks: COAL: 1.830 inches; 5-shot 100-yard group (inches): .49
32 Nosler Ballistic Tip Vihtavuori VV-N130 Subscribe 3461
Remarks: compressed load; COAL: 1.830 inches; 5-shot 100-yard group (inches): .69
35 Berger FB Varmint Hodgdon Lil'Gun Subscribe 3159
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): 1.05
35 Berger FB Varmint Hodgdon Lil'Gun Subscribe 3328
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .66
35 Berger FB Varmint Hodgdon Lil'Gun Subscribe 3500
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .92
35 Berger FB Varmint Alliant RL-7 Subscribe 3302
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): 1.78
35 Berger FB Varmint Alliant RL-7 Subscribe 3373
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .55
35 Berger FB Varmint Alliant RL-7 Subscribe 3551
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .80
35 Berger FB Varmint Ramshot TAC Subscribe 3062
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): 1.22
35 Berger FB Varmint Ramshot TAC Subscribe 3154
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .69
35 Berger FB Varmint Ramshot TAC Subscribe 3274
Remarks: COAL: 1.780 inches; 5-shot 100-yard group (inches): .96
39 Speer TNT Hodgdon H-4198 Subscribe 3155
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): .63
39 Speer TNT Hodgdon H-4198 Subscribe 3174
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 1.70
39 Speer TNT Hodgdon H-4198 Subscribe 3246
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 1.46
39 Speer TNT Accurate AAC-2200 Subscribe 2993
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 1.44
39 Speer TNT Accurate AAC-2200 Subscribe 3044
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): .94
39 Speer TNT Accurate AAC-2200 Subscribe 3134
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 1.71
39 Speer TNT Hodgdon CFE BLK Subscribe 3005
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 2.49
39 Speer TNT Hodgdon CFE BLK Subscribe 3109
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): .89
39 Speer TNT Hodgdon CFE BLK Subscribe 3234
Remarks: COAL: 1.800 inches; 5-shot 100-yard group (inches): 1.53
39 Sierra BlitzKing Accurate AAC-1680 Subscribe 3020
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): 1.58
39 Sierra BlitzKing Accurate AAC-1680 Subscribe 3121
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .77
39 Sierra BlitzKing Accurate AAC-1680 Subscribe 3198
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): 1.04
39 Sierra BlitzKing Hodgdon H-4198 Subscribe 3030
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .32
39 Sierra BlitzKing Hodgdon H-4198 Subscribe 3167
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .25
39 Sierra BlitzKing Hodgdon H-4198 Subscribe 3221
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .51
39 Sierra BlitzKing IMR IMR-4198 Subscribe 3017
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .57
39 Sierra BlitzKing IMR IMR-4198 Subscribe 3155
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .82
39 Sierra BlitzKing IMR IMR-4198 Subscribe 3203
Remarks: COAL: 1.890 inches; 5-shot 100-yard group (inches): .69