Hi Guys

Finally got to play with my new to me Krieghoff classic double. It is a 9.3 and is scoped with a S&B 1.5-4x scope in an ERA swing mount. The rifle was factory regulated for Romey ammo using 286 gn Woodleighs, however I decided to try developing a load for the 270 gn Speer first off.

Anyway at 50m the first group of 4 was about a 2.5" group. Subsequent groups of 1 gn extra (ie 1 group each of 56, 57, 58 and 59 gn of RL15) shrank the groups down to about 1 inch which I am very happy with. What puzzles me tho is that the opposite to normal is happening as the powder charge increases. The first group of 2.5 inches had the barrels crossing - the bullets from the right barrel hitting to the left of the bullets of the left barrel. As the powder charge got heavier the group shrank down to the 1" but the barrels are still crossing - not that it is a problem now that the group is down to 1 inch but I am curious to know whats happening - any one else ever had this occur?

Thanks and Cheers.

GG