thumper
n.— «The .243 has excellent accuracy, minimal recoil, and surprising clout (with a 100-grain factory bullet), making it a good choice for a light-framed youngster or lady, or any shooter skittish of “kick.” But it’s not the buck-thumper that the bigger guns are. It is best used in regions where mature bucks field dress under 100 pounds.» —“Is the .270 caliber the ‘top gun’ of Texas?” by Joe Doggett Houston Chronicle Nov. 20, 1986. (source: Double-Tongued Dictionary)