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Ditto on rifle range--- 45 is pretty difficult on consoles-- somewhat easier on PC.... this is the most frequently missed thing for people going for 100%
Score of 45 unlocks fast reload on your weapons..... you can check this by getting a submachine gun and hold down the fire button... when a clip is emptied tommy will reload--- if you see him reload--- fast reload is NOT unlocked meaning you did not get the 45 score yet.
If fast reload is unlocked-- there will be a short pause when tommy empties a clip but the reload animation will be disabled...
If this does not get you 100%, check the link in my sig... it is a checklist that narrows down everything left that would leave you at 99%-- some things (such as the rifle range) are not in your stats.... my checklist will tell you how to check everything (stats or not in stats)