Precision Tools
RØller Angle Calculator
Mathematics meets ballistics. Calculate optimal locking piece angles for your custom RØller build.
Advanced Calculator
Platform-Specific Calculator
Select platforms for optimized calculations. Advanced ballistics modeling with precision engineering for each RØller system.
RØller 1
The Hammer of Dawn
Precision long-range platform optimized for .308 Winchester and 6.5 Creedmoor
Base: 50°RØller 3
The Meat Grinder
Versatile tactical platform supporting 5.56 NATO and .300 Blackout
Base: 58°RØller 5
Spray and Pray
Compact pistol-caliber platform for 9mm and 10mm applications
Base: 100°RØller 1 Parameters
Cartridge (Optimized for RØller 1)
Bullet Weight (grains)
Muzzle Velocity (fps)
Barrel Length (inches)
RØller 1 Results
Configure RØller 1 parameters for optimal locking angle calculation.
✓ Platform: RØller 1
✓ Base Angle: 50°
✓ Click to switch platforms
✓ Advanced ballistics modeling