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The rifling pattern in the barrel that fired a particular bullet can be determined by counting the number of groove or land impressions around the circumference of the bullet.
21 mar 2020 · Bullet jump is basically the distance a bullet travels before it touches the rifling in the barrel. That gap is relatively short distance that typically ranges from 0 to 0.150 inches, although it could be longer in some factory or magazine-fed rifles. There is a lot going on in a chamber in the tiny window when a round goes off.
These reference points define the location at which a land impression meets a groove impression. The width of the land impression is the width of the floor; the plateau and both adjacent slopes define the width of the groove impression.
19 sty 2024 · The landing page dimensions determine the space allocated for your content. Although the landing page frame spans a width of 1440 px, the design area for landing page content adheres to a standard width, typically ranging from 940 to 960 px, ensuring a visually balanced presentation.
17 gru 2017 · The disparity is the roughly 0.016" in diameter difference between the comparator measuring point and the actual caliber diameter of the bullet (most commonly referred to as the ogive). The location, lengthwise, of that measuring point on different bullets varies considerably (in relative terms).
This page explains a method to precisely measure the distance to touch the lands on your rifle. That would tell you how far out you need to seat the bullet in a case to contact the lands. Learn more about bullet jump and recommended best practices.
This article covers the importance of knowing your Cartridge Overall Length (COAL) and Cartridge Base to Bullet Ogive (CBTO) when reloading.
