I have a 7mm Rem mag that I am going on a whitetail trip with me this yr and am starting to think about reloading for it.I put on a TDS recticle scope on the gun and want to be able to consitently hit out to 400 yds. I have purchased some 140 gr Accbonds, some 140 gr Nosler partioners, and some 139 BTSP Hornady bullets. I have a variety of powder to try. My question is I have read that 140 gr bullets arn't that good in a 7mm mag. And that I should be using a 160 gr. Can someone tell me if they use 140 gr bullets with success. Thanks for any input.