Never heard of 140 gr. .30-30 load before? Hum..., in any case I'd certainly choose a 170 grain load. The Remington Core-Lokt, Winchester SilverTip, Hornady Interlock, or Federal load with Nosler Partition in the 170 grain weight should be the best bets. I'd go with whatever shot the most accurately from your particular rifle from the bench.