Cat,

I'm going the other way for your charge. I have an Omega and was pushing 250 & 240 gn bullets with over 100 gns of BH and could not get the tight groups. I went up to the 300 Grn Scporpion PT Gold with 100 grns of powder and found the sweet spot.

If you keep the 260's try 80 or 75 grns. If you can pick up some 300 grn Scorpions keep the charge the same.

Jayhawk