Try for accuracy at a much closer distance !
Start at 5 yards & move your target back at 5 yard increments.
If you're NOT all over the paper at 15 yards, you'll be happy to know that it ain't the gun but the person/s using it.
A small error in marksmanship will be greatly enhanced the further away the target gets ! - I should know as I can get 1/2" groups at 7 yards with a 2" snubbie but can barely touch the target at 25 yards
Mind you, I can get 1" groups with my 6"
S&W M-19 at this distance.
Practice, practice, practice.
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"The Gun from Down Under !"
http://www.para1911fanclub.w3.to/