The only 140 gr. I tried in my .280 Rem. was the barnes TSX and it didn't group worth a damn. Got some 150 gr. Nosler ABLR's and got some great speed with IMR 7828SSC. (3010 FPS) Just have to find the right seating depth for accuracy. Just may try the 150 gr. PT's next. Alway have had good luck with those. Load for the 150 gr. bullets was the top load in the Nosler #7 manual.
Paul B.

Our forefathers did not politely protest the British.They did not vote them out of office, nor did they impeach the king,march on the capitol or ask permission for their rights. ----------------They just shot them.
MOLON LABE