A former Marion County special sheriff's deputy who was convicted of voluntary manslaughter in his wife's 2006 shooting death was sentenced Wednesday to 25 years in prison.Ray Spradley, 44, was convicted of the manslaughter charge last month for the death of Nikki Henderson. Prosecutors had wanted a jury to convict him of murder.Spradley admitted to shooting Henderson at their Scarborough Lake Apartments home on the city's northwest side, but his attorney claimed Henderson had beaten Spradley before and that the two were in another physical struggle when the shooting happened in March 2006.Spradley could have been sentenced to up to 50 years in prison for the manslaughter charge; the minimum was 20 years. Had he been convicted of murder, he would have faced a sentence of between 45 and 65 years.Police reports indicated Spradley had called authorities four times to tell them he was being beaten, and he once had a restraining order against Henderson, 29. Henderson was arrested once on suspicion of domestic battery, police said.On the afternoon of the shooting, his attorney said, Spradley had taken a gun away from Henderson. Henderson took the gun back, and Spradley again took it away from her before shooting her 11 times, the attorney said.Henderson and Spradley had been married for about four months when the shooting happened.Spradley was a special deputy at the time. He worked security at the City-County Building.