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tjs: I believe that a break in comunication has occured. A perfect possible score for 30 targets is 330. You can look at that in any way you wish. 30 - 11 pt targets or 30 - 10 point targets with an additional 1 point for every X. 30 x 10=300 + 30 possible points for X' s = 330. No matter which way you view it the total possible is 330 pts.

Using your example of scoring hits it would work like this:
(9 X' s) 9x11 = 99
(20 - 10' s) 20x10 = 200
(1 - 8) 1x8 = 8
___________________
99+200+8 = 307

If you wish to subtract:
(9 - X' s) 9x0 = 0 (330 - 0 = 330)
(20 10' s) 20x1 = 20 (330 - 20 = 310)
(1 - 8) 1x3 = 3 (310 - 3 = 307)

I think what is throwing you is that you are failing to subtract the appropriate number. The appropriate scoring now is :

X' s = either +11 or -0
10' s = either +10 or -1
8' s = either +8 or -3
5' s = either +5 or -6
misses = either +0 or -11

I promise you that this is correct. Hope it helps.

Bluejacket, You are correct in scoring, and thats what I have been trying to say all along but it seems not everyone else gets it.

Tj, I' m sorry but Bluejackets last post is not what you were saying.
Nonetheless, I give up.
My bet still stands on the IBO score card counting X' s as bonus point: If the scorecard has a place for bonus X points, the ice cream is on me; if not, you owe me a double scoop.

Its really pretty simple. there is no longer a thing called an X. The score card will have 11,10,8,5,0 you will mark the right column. At the end count up the total in each column, multiply each by its score, and add together. All done.

--Bob

Amen!
ken12[:-]

[8D] Thanks Bob H for putting the correct formula back on the chaulkboard!!!
It seems like some people just can' t get anything and love to twist everything into something it isn,t. If you let them , they would lead people to believe that the Sun revolves around the Earth.

Bob H has given the best way to do your scores especially at the national and world level shoots add your score DO NOT subtract. The reason for this is if you subtract 10 from 440 = 430, 10 from 330 = 320 and this happens people forget they are shooting a 40 target range and subtract like they do at a club shoot or other qualifier. Once you sign that card the score you have on it is yours it does not get changed once it is turned in so add and then add again because I do not want to be the one that tells you that you made a mistake and it can not be changed and it cost you 1st place, this sounds like preaching but make sure it is right this is probably one of the worst things to deal with at the shoots.

I don' t want to take anything away from Bob H., but scoring 11, 10, 8, 5,0 has been mentioned several times in this thread.
That has been the point of several of us: X are now 11. Not bonus points, not X' s plus one, etc.
Though it is correct to score your card by adding up, as you go through the shoot a shooter can keep track of his score " in his head" by using the subtracting method. This can be helpful if you are not one of the score keepers and are that concerned about your score. Counting down gives you a better idea of the pace you are on than adding up as you go.
As I recall, the IBO score cards are punched so there really is no math until the end anyway.