groove diameter

groove diameter

[′grüv dī‚äm·əd·ər]
(ordnance)
One of the two diameters of a rifled barrel; it is measured between two grooves that are diametrically opposed.
References in periodicals archive ?
Cupronickel fouling built up so thickly inside the bore some barrels eventually split from the pressure, so groove diameter was deepened to 0.
I was under the impression that the barrel groove diameter for these revolvers was right at .
Due to what appear to be intentional mismatches between bullet diameter and barrel groove diameter, accuracy of the Model 1903 is not very exciting.
For this reason, the initial intension of wear evaluation by measuring the groove diameter was changed to gravimetric evaluation.
The diameter measured to the outside of the blade determines the limit for the smallest possible diameter which can be machined, and the diameter measured to the inside of the blade determines the limit for the largest possible groove diameter.
Trial groove diameter is preset with an integral stop.
This weight, of course, is drilled out to a diameter that comfortably exceeds the groove diameter of the barrel proper to allow passage of the bullet.
There seems to be no real standard for barrel groove diameter with extremes such as these two barrels as well as chamber throats, which may be way undersized or way oversized.
The limitation depends on the insert and tool geometry, minimum groove diameter, and problems with chip flow.
400-inch groove diameter and has always shot my home cast lead alloy 0.