Honestly does it really matter to worry about groupings for a small subcompact SD weapon. This is a close in, SD gun, not a range gun. Sure you need to practice and be able to hit a target at 10 to 25 yards, but trying to reduce grouping with different ammo is getting a little over the top. Most SD shooting situations happen within ten feet. Shoot with low priced ammo, that fires every time. Then purchase a high quality SD ammo, and shoot a few rounds every time you go to the range, so you are used to the extra recoil and know it will fire every time you pull the trigger.
For practice I buy Federal Champion 9mm at Walmart for $18 per 100 rounds.
You want top of the line SD ammo, buy CorBon +P 115gr JHP. The ballistics are: 1350fps and 466 ft lbs energy. Check the specs on other SD ammo and you will find none are even close to the CorBon 9mm ammo. I get the CorBon on line at an average of $22 for a 20 round box. At $1.10 per shot, you don't use very much at the range. Try a full box at first to make sure you don't have any FTF's. Then a few every time you go back for practice. Ruger states that you can shoot +P ammo in the LC9, but "not a steady diet of +P ammo". You will feel a little extra recoil, but in such a small, lightweight gun, it is not excessive.
Last edited by robkarrob; August 12th, 2012 at 02:57 PM.