I load 125gr (.357) XTP's over 6 gr of PP, VERY accurate load in 9mm. This 3 shots from gen 3 G26 @ 25 yds with above load. Forget measurement but was under 1". Here is 3 shots @25 yds from this contraption! Gen.4 g22 with a LWD 17l barrel (sleeved to fit 22 slide)that has been lapped , squared/ recrowned and fitted with a brake for ss30378.