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belted cartridges
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<blockquote data-quote="J E Custom" data-source="post: 1675729" data-attributes="member: 2736"><p>To understand the belted case you first have to know the reason it was developed. Many people lost their lives because of a dirty or fouled chamber and in many cases the case it's self had not been sized. (A common practice on big dangerous game cartridges). Many of them were simply loaded as fired and the bullet was crimped in the neck with a hand tool. It was recommended by experienced guides that all loaded rounds were checked to make sure that would still chamber before going hunting. </p><p></p><p>This practice paid off most of the time until the chamber got dust or other fouling in it and that's when things got dicey. Inter the belted case. It was designed to chamber under any circumstance and was head spaced using a belt and a grossly under sized case that would chamber under the worst conditions. These cases were considered disposable instead of the clients.</p><p></p><p>With cases sized 15 to 20 thousandths smaller that the chamber it allowed cartridges to be chambered in any chamber and withstand this first fire forming in a much larger chamber. the only danger to a first fired case of any kind is head space. A non belted case will almost without a doubt separate just in front of the case web if head space is more than .007 or .008 (This is the reason that no go or field gauges are set to reject any chamber that exceeds these gauges. </p><p></p><p>Most belted case have a thicker area in front of the belt and web to compensate for this greater amount of expansion in the first firing.</p><p>From then on, it is up to the loader to properly size the belted case.</p><p>for longevity. With proper sizing there is no reason that a belted case cant do everything wanted, You can size the case so it becomes a shouldered case and head space of the shoulder or still head spaces of the belt with no, or minimum shoulder set back.</p><p></p><p>Just a side note: Many wild cat cartridges based on belted cases actually fire form with great accuracy and can be hunted with much like the Ackley cartridges because there is no need to form a Donut or seat the bullet long to hold head space to a minimum. </p><p></p><p>Case capacity is sometimes an issue for belted cases but there are also very large belted case that can hold 125 grains of powder before they are modified like the 378 Weatherby that with Wild catted designs can hold 145+ grains of powder. so capacity is not an issue in most cases.</p><p></p><p>Just saying</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1675729, member: 2736"] To understand the belted case you first have to know the reason it was developed. Many people lost their lives because of a dirty or fouled chamber and in many cases the case it's self had not been sized. (A common practice on big dangerous game cartridges). Many of them were simply loaded as fired and the bullet was crimped in the neck with a hand tool. It was recommended by experienced guides that all loaded rounds were checked to make sure that would still chamber before going hunting. This practice paid off most of the time until the chamber got dust or other fouling in it and that's when things got dicey. Inter the belted case. It was designed to chamber under any circumstance and was head spaced using a belt and a grossly under sized case that would chamber under the worst conditions. These cases were considered disposable instead of the clients. With cases sized 15 to 20 thousandths smaller that the chamber it allowed cartridges to be chambered in any chamber and withstand this first fire forming in a much larger chamber. the only danger to a first fired case of any kind is head space. A non belted case will almost without a doubt separate just in front of the case web if head space is more than .007 or .008 (This is the reason that no go or field gauges are set to reject any chamber that exceeds these gauges. Most belted case have a thicker area in front of the belt and web to compensate for this greater amount of expansion in the first firing. From then on, it is up to the loader to properly size the belted case. for longevity. With proper sizing there is no reason that a belted case cant do everything wanted, You can size the case so it becomes a shouldered case and head space of the shoulder or still head spaces of the belt with no, or minimum shoulder set back. Just a side note: Many wild cat cartridges based on belted cases actually fire form with great accuracy and can be hunted with much like the Ackley cartridges because there is no need to form a Donut or seat the bullet long to hold head space to a minimum. Case capacity is sometimes an issue for belted cases but there are also very large belted case that can hold 125 grains of powder before they are modified like the 378 Weatherby that with Wild catted designs can hold 145+ grains of powder. so capacity is not an issue in most cases. Just saying J E CUSTOM [/QUOTE]
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