Shotshell Front-Shot, Rear-Slug Load: Penetration-Coverage Trade-off
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Solution Overview
Problem
Conventional shotshells either lack the penetration power of a single slug or the dispersion of multiple projectiles, making them ineffective for both deep penetration and wide target coverage, especially in personal defensive scenarios where aim accuracy may be compromised.
Innovation Solution
A shotshell design featuring a combined load with a slug and shot, where the shot is positioned in front of the slug to enhance dispersion, ensuring the slug provides high impact while the shot covers a broader area with wider projectile distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single slug is used in the shotshell load, then deep penetration and large energy deposit are achieved, but the probability of hitting the target decreases due to limited dispersion
Solution Approach 1:
The load is segmented into multiple components: a primary slug for deep penetration and multiple shot pellets for dispersion. This segmentation allows each component to fulfill its specific function - the slug provides focused penetration power while the shot pellets spread out to increase target coverage and hit probability
Solution Approach 2:
The invention merges two traditionally separate load types (slug and shot) into a single combined load. The slug and shot pellets are positioned together in the shotshell, with the slug at the rear and shot pellets at the front, allowing both penetration power and dispersion to be achieved simultaneously from one cartridge
2Reliability
If multiple shot pellets are used in the shotshell load, then wider dispersion and greater target coverage are achieved, but penetration power and energy deposit on target decrease
Solution Approach 1:
The load is divided into two functional segments: shot pellets positioned at the front for dispersion and target coverage, and a slug positioned at the rear for penetration. This spatial segmentation ensures that the shot pellets can spread widely to cover the target area while the slug maintains its concentrated mass for deep penetration capability
Solution Approach 2:
The invention adds a dimensional aspect to the load configuration by arranging components along the longitudinal axis of the shotshell. The shot pellets are positioned forward while the slug is positioned rearward, creating a spatial distribution that enables both wide dispersion (horizontal dimension) and deep penetration (longitudinal dimension) simultaneously
3Strength
If shot is positioned behind the slug, then the slug maintains its structural integrity, but the shot dispersion is reduced and effectiveness decreases
Solution Approach 1:
Instead of positioning the shot behind the slug as in conventional designs, the invention inverts the arrangement by placing the shot pellets at the front and the slug at the rear. This inverted configuration allows the shot to disperse more effectively while the slug maintains its integrity through the wad separation mechanism
Data Source
AI summary
An improved shotshell of the type having a hull, having a propellant, a wad, and a load. The improvement comprises the load comprising of at least one non-spherical slug and shot, with at least one shot disposed in front of the slug in the hull.