300win with interbonds

[snoopy(cda)]

hello all, i'm new to this forum but i have been watching for awhile. my name is dave. i have a question concerning hornady's 165g interbonds versus noslers accubond. iwas shooting a 165g Ballistic tip and getting 1" groups with 79g r22. when i switched to the interbond groups opened up to 2-3". iswitched because of jacket and core seperation, it was bad in my 308 and i thought it would be worse in the 300. how have your experiences been? should i try the accubond? i load my remington SPS in 300 out to 3.54" COL maybe it has something to do with the different ogives? just wanted to see what you guy's think. TX