I have a custom 7-08 that will not shoot worth beans with 140's in a lead/copper version but will make bug holes with TSX's. Several have worked with the gun and lead/copper bullets with all being able to get approx. 1.25" groups. With the TSX's .6-.4 groups are norms even with factory Fed. premium 140's tsx's. Now for the questions---1st. is the twist rate possible slow for the lead/copper 140's.. 2nd question-- although it has not been tried is it possible that heavier thereby longer lead/copper bullets would give a much better group than the 140's lead/copper. All suggestion welcome. Thanks
