Measure the "ejection port" on the right side just above the stock. A short action opening is 2 3/8" long and a long action opening is 3 1/4" long. Some early models have a slot cut in the top of the rear receiver ring.
Thanks Jack, and listers. Short Action Mod 700 is what I got. Its 35 years old, sn 288891, Leopold vari on it. I had the receiver engraved, bolt jeweled in Tokyo in 1970. I like it so much I don't even shoot it. Probably 8-10 rounds every 10 years or so just to watch them all (most all) go in the 10 ring at 100 meters. I'm gone. Thanks, snapshot
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