[President_Elect_Shang]

Ok now I understand and I have to say that formula is a work of beauty. I printed it out as a guide for future formulas. One more question and I think I will be up to par with range.

Let’s say for example that I want to hit a target at range 30 for -20 (80% accuracy). When I set up my formula wouldn’t I want to write the formula for:

Greater than or equal to 21 and less than or equal to 30.

If I don’t explicitly restrict the range I want that one accuracy percent at won’t SE spill it over to the next range IF the next range is undefined? One more time using the example formula you gave; SE will apply the -10 to hit on all ranges from 0 to 30 since your formula said <30 correct?

New question I was reading an earlier post in this thread I came to the impression SE does all ranges in 10’s; which I assume is what you are calling 10 LS, by default. You can change the max range but the base 10’s is programmed. What is the max range; 290 LS?