Shot cup for shotshell

1. A shot cup for holding shot in a shotshell, the shot cup comprising a generally cylindrical sidewall, having a closed proximal end, and an open distal end, and a plurality of distally-facing petals connected to the sidewall at its proximal end, the petal configured so that it is widest at a point intermediate the proximal and distal ends of the petal, the at least one petal being capable of opening outwardly after the shot cup leaves the shotshell.

2. The shot cup according to claim 1 wherein the plurality of petals are substantially equally spaced around the circumference of the sidewall of the shot cup.

3. The shot cup according to claim 1 wherein there are three petals.

4. The shot cup according to claim 1 wherein each of the petals are of substantially the same size and shape.

5. The shot cup according to claim 4 wherein the plurality of petals are substantially equally spaced around the circumference of the sidewall of the shot cup.

6. The shot cup according to claim 1 wherein each petal is substantially diamond-shaped, with side edges that diverge in the distal direction to a point intermediate the proximal and distal ends of the petal, and thereafter converge toward the distal end of the petal.

7. The shot cup according to claim 1 wherein the petals are formed by lines of weakness in the sidewall of the shot cup.

8. The shot cup according to claim 7 wherein the lines of weakness are formed by perforations in the sidewall of the shot cup.

9. The shot cup according to claim 7 wherein the lines of weakness are formed by score lines in the sidewall of the shot cup.

10. The shot cup according to claim 1 wherein each petal is formed by at least one cut in the sidewall of the shot cup.

11. The shot cup according to claim 1 wherein each petal is formed by one continuous cut in the sidewall of the shot cup.

12. The shot cup according to claim 1 wherein the petals are hingedly attached to the sidewall at their proximal ends, and wherein the petals are wider at a point intermediate their proximal or distal ends, than the width of the hinged attachment.

13. A shot cup for holding shot in a shotshell, the shot cup comprising a generally cylindrical sidewall, having a closed proximal end, and an open distal end, and a plurality of distally-facing petals connected to the sidewall at their proximal ends, the petals being widest at a point intermediate their proximal and distal ends, and the petals being substantially equally spaced around the circumference of the sidewall, each of the petals being capable of opening outwardly after the shot cup leaves the shotshell.

14. A shot cup for holding shot in a shotshell, the shot cup comprising a generally cylindrical sidewall, having a closed proximal end, and an open distal end, and a plurality of distally-facing petals connected to the sidewall at their proximal ends, the petals being wider at a point distal to the point of connection than the width of the connection at the proximal end, and the petals being substantially equally spaced around the circumference of the sidewall, each of the petals being capable of opening outwardly after the shot cup leaves the shotshell.

15. A shotshell comprising:

a shell case;

a head at the proximal end of the shall case;

a shot cup disposed in the shell case, the shot cup comprising a generally cylindrical sidewall, having a closed proximal end and an open distal end, and a plurality of distally-facing petals connected to the sidewall at its proximal end, the at least one petal being widest at a point intermediate its proximal and distal ends, and being capable of opening outwardly after the shot cup leaves the shotshell; and

a load of shot disposed in the shot cup.