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A method includes determining a shot count within an optical device coupled to a firearm. The shot count corresponds to a number of shots taken using the firearm. The method further includes determining a muzzle velocity parameter from a life-cycle profile of the firearm based on the shot count as a

A method includes determining a shot count within an optical device coupled to a firearm. The shot count corresponds to a number of shots taken using the firearm. The method further includes determining a muzzle velocity parameter from a life-cycle profile of the firearm based on the shot count as an input into a ballistics solution.

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1. A method comprising: determining a shot count within an optical device coupled to a firearm, the shot count corresponding to a number of shots taken using the firearm; and determining a muzzle velocity parameter from a life-cycle profile of the firearm based on the shot count; and adjust a ballis

1. A method comprising: determining a shot count within an optical device coupled to a firearm, the shot count corresponding to a number of shots taken using the firearm; and determining a muzzle velocity parameter from a life-cycle profile of the firearm based on the shot count; and adjust a ballistics solution according to the determined muzzle velocity. 2. The method of claim 1, further comprising: receiving a user input; anddetermining the shot count in response to receiving the user input. 3. The method of claim 2, wherein the user input comprises at least one of a user request for an updated ballistics solution and a bolt-cycling event. 4. The method of claim 1, further comprising: detecting a shot; andincrementing a shock counter that maintains the shot count in response to detecting the shot. 5. The method of claim 1, wherein detecting the shot comprises: generating a signal in response to a shock event; anddetecting the shot when the signal matches a characteristic profile representing discharge of the firearm. 6. The method of claim 1, wherein determining the muzzle velocity parameter comprises looking up the muzzle velocity parameter corresponding to the shot count in a look up table storing values corresponding to the life-cycle profile of the firearm. 7. The method of claim 1, wherein determining the muzzle velocity parameter comprises calculating the muzzle velocity parameter based on the shot count. 8. An optical device configured to be mounted to a firearm, the optical device comprising: a processor; and a memory accessible to the processor and configured to store a shot count corresponding to a number of times the firearm has been discharged and to store a life-cycle profile corresponding to the firearm, the memory accessible to the processor and including instructions that, when executed, cause the processor to determine the shot count and to determine a muzzle velocity parameter of the firearm from the life-cycle profile based on the shot count, and adjust a ballistics solution according to the determined muzzle velocity. 9. The optical device of claim 8, wherein the life-cycle profile comprises a table including an average muzzle velocity versus number of shots for a type of the firearm. 10. The optical device of claim 9, wherein the processor determines the muzzle velocity parameter by retrieving the average muzzle velocity from the life-cycle profile that corresponds to the shot count. 11. The optical device of claim 8, further comprising: a shot detection sensor coupled to the processor and configured to generate a signal in response to a shock event; andwherein the memory further includes instructions that, when executed, cause the processor to detect a shot when the signal matches a shot characteristic and to increment the shot count in response to detecting the shot. 12. The optical device of claim 8, wherein the life-cycle profile comprises a curve-fitting algorithm derived from muzzle velocity versus shot count for at least one firearm of a type corresponding to the firearm. 13. The optical device of claim 8, further comprising an input/output interface coupled to the processor and configured to receive the life-cycle profile. 14. The optical device of claim 13, wherein the processor receives the life-cycle profile and stores the life-cycle profile in the memory. 15. A rifle scope comprising: a processor; and a memory accessible to the processor and configured to store a shot count, the memory configured to store instructions that, when executed, cause the processor to determine the shot count, determine a muzzle velocity parameter from a life-cycle profile in response to determining the shot count, and adjust a ballistic solution according to the determined muzzle velocity. 16. The rifle scope of claim 15, further comprising: a shot detection sensor coupled to the processor and configured to generate a signal in response to a shock event; andwherein the memory stores instructions that, when executed, cause the processor to determine when the signal corresponds to a shot and to increment the shot count in response to detecting the shot. 17. The rifle scope of claim 15, wherein the shot detection sensor comprises a piezoelectric element. 18. The rifle scope of claim 15, wherein the life-cycle profile comprises a table of muzzle velocities, each of the nui7zle velocities corresponding to a number of shots fired. 19. The rifle scope of claim 15, wherein the life-cycle profile comprises a curve-fitting algorithm, the processor configured to calculate the muzzle velocity based on the shot count using the curve-fitting algorithm. 20. The rifle scope of claim 15, wherein the processor is configured to receive a user input and to determine the shot count in response to the user input.