 Despite his felony conviction, which legally prohibits him from handling firearms, Wahlberg prepared for his role in "Shooter" by attending long-range shooting training at Front Sight Firearms Training Institute near Pahrump, Nevada.He was able to hit a target at 1,100 yards on his second day, a feat which usually takes weeks to achieve.He had said in a number of interviews that he would retire at the age of 40 to concentrate on parenthood and professional golf.