i went two the range today and shoot my remington 700 7mmag i have always used corelockts 150 grain b/c that is just what my guns has liked out off the diffrent loads ive tryed well question/problem is that i for grins i tryed some fedral 160 grain partions and they didnt shoot bad but they ddint want 2 extract from the gun after the shot it may be something simple but i have no answer for my self and good ole corelocks shot awsome once again 1/2 groups i wonder why i even consider changing still want 2 try hornady well thank you for listening and any replies about problem are appreciated