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Thank you sirI can tell you I shoot 130BT's out of my fast twist .270 1:8 without any problems at all with accuracy. I will bet this will do same fine. The long action of a Wby will give you plenty of COAL IMHO. Much more flexible .270 shooting all bullet weights. I have plenty of threads on mine shooting 145ELDX, 150AB, 150ABLR, 156HH, 160 Partitions, 165ABLR, 170EOL, 175 TGK and 170BT's. If you are looking for .270 that can shoot whatever you have, I bet this one will do it. Just posting up based on my experience with fast twist .270's in case you were wondering.