Too much in what terms? Wasting precious and expensive amino acids converting excess into glucose/energy? That's probably in the ballpark of 50 grams protein per day (that level affords nitrogen balance in PSMFs). Even if you think you need more because you do some hard kettlebell workouts, you probably don't even need double that.
Unless you're deliberately trying to hurt yourself or trying to maintain ketosis you're not.
I always know if I've eaten too much protein or not enough protein, and even the amount by which I've deviated from my body's desire. How? I listen to my friggin' body. It says, "Some more protein sounds great right now," or, "Ugh, my stomach feels like it's got too much work to do."
Weighing out food is not usually the best way of measuring its contents. According to this page: http://nutritiondata.self.com/facts/lamb-veal-and-game-products/4800/2 , there is 160 grams of protein in 24oz of bison. Excess protein is converted to glucose through gluconeogenesis. The common barrier given to this is 1g of protein per lb bodyweight. Protein needs can vary largely upon volume of exercise and type. Heavy exercise can lead to higher amounts of protein being directly used for muscle repair rather than for other bodily processes. Another consideration is how often you eat protein throughout the day and the week. You may be eating a low protein diet otherwise, and simply meeting your needs through large feedings.