action lengths

The length of bolt pull to chamber a cartridge. A 30-06 is a long action. A 308 is a short action.
 
Some manufacturers and custom makers list five action lengths - magnum, long, intermediate, short and super short. The last or the latter two sometimes use receivers that are scaled down overall, not just shorter.

IIRC, the original Model 70 had only one action length forging. Adjustment for everything from .375 H&H Magnum to .22 Hornet was done by tweaking that basic platform.

Jim
 
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