How big
Do not doubt there are differences in rifle to rifle made with the same barrel and reamer.
But do question if we make too much of it.
During World Wars we issued million of Garands and Springfields and bizillions of rounds of ammo. Have not heard of major issues of malfunctions.
In some matches, rifles and ammo are issued randomly at the range to shooters and still they are able to hit the targets.
Not talking about setting world benchrest records.
So how big are the differences between two rifles both meeting SAAMI spec chambers ?
On a slightly different note... Years ago ran multivariable tests (MVT) changing bullet manufacturer, bullet weight, bullet style, bullet seating depth, powder make, powder charge, powder charge technique, primer brand, primer strength, brass mfg, rifle mfg, etc. All loads were safe and did not show excess pressure. Not recommending this for other folks. What was interesting was that all bullets hit in the black on a 100 yard target. Could not have blamed a miss on a 200 yard buck given the observed bullet placement variation.
On the other hand, with a 460 Wby moved the bullet placement over 18 inches at 100 yards just by screwing on and off the factory muzzle brake.
Again, totally acknowledge differences, just want to know how big they are as measured.
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