Fixed crashing issue when attempting to print ballistics chart.

Added new Kahles reticles:

MHR (K1050i FT)

4-Dot (Helia 5 - 1.6-8x42i)

4-Dot (Helia 3 - 4-12x44i)

4-Dot (Helia 3 - 3-10x50i)

4A (Helia 3 - 3-9x42)

4D (Helia 3 - 3-9x42)

G4B (Helia 5 - 1.6-8x42i)

G4B (Helia 3 - 4-12x44i)

G4B (Helia 3 - 3-10x50i)

G4B (Helia 3 - 4-12x44)

G4B (Helia 3 - 3-10x50)

Plex (K1050)