Pi ?

[Willbird]

I just did the math for 2 wraps around a .500 bullet, and realized the answer is PI :-). If you keep it simple and do not change the dia the second wrap around :-).

Duh :-).

Bill

[jhrosier]

Yep,

#wraps x diameter x pi

to be very precise you should allow adding the thickness of the paper for the second wrap. In the real world it doesn't amount to enough to worry about.

if you don't have a scientific calculator:

#wraps x diameter x (355/113)

(355/113) is same as pi out to about seven decimal places.

Jack

[303Guy]

Keeping it simple is the hard part! Dry wrap or wet? Dry wrap stretches more but leaves a larger finished diameter!?:holysheep

[rhead]

I start with a form that is a little over sized and make up a few. After examining the finished product I can carefully shave off enough to remove the overlap. Ignoring the difference in diameter for the two wraps will sometimes compensate for the stretch from the damp paper. Differences in wrapping techniques and lots of paper will make some difference in the needed paper length. Small gaps and overlaps do not seem to make a big difference in group size but I always opperate on the theory that any deviation from perfection cannot help the situation. course I could be wrong, I have never achieved any perfection to compare my loads to.

Of

[badgeredd]

Yep,

#wraps x diameter x pi

to be very precise you should allow adding the thickness of the paper for the second wrap. In the real world it doesn't amount to enough to worry about.

if you don't have a scientific calculator:

#wraps x diameter x (355/113)

(355/113) is same as pi out to about seven decimal places.

Jack

Just using 3.14 seems to be close 'nuff for PI. For that matter 3.1 likely is a good number for PI. I seriously doubt the the additional numbers to the right of the decimal will have any affect on the finished product. when using typical boolit diameters.

Edd

[swheeler]

I had 3.1 pieces of Pi at Christmas dinner, then I wrapped up in a blanket and took an "old man" nap, that count?

[rhead]

Tangent, Secant, Cosine, Sine, 3.14159.

GO Math Team!!!!

[Zeek]

Tangent, Secant, Cosine, Sine, 3.14159. GO Math Team!!!!
When I was young, I, too, was a Tangent. Then I learned it was more healthful to avoid excess exposure.

[Uncle R.]

I had 3.1 pieces of Pi at Christmas dinner, then I wrapped up in a blanket and took an "old man" nap, that count?

If it was two full wraps in the blanket - with no overlap - then it counts.
Remember you want the leading edge of the blanket right under your chin.
:groner:
Uncle R.

[RMulhern]

Pie r square??

Naw!! Pi are round; cornbread r square!!

[robroy]

cornbread ain't square if ya fix it in a skillet

[redneckdan]

3.14159265358979323....sorry...that is all I can do for memory.....believe it or not here at Tech there is a drinking game based on pi

[lylejb]

there is a drinking game based on pi

If you can remember PI, you need another drink?[smilie=l:

Actually, I had a piece of pecan pie tonight, and I won't have a hangover tomarrow:-P

[redneckdan]

Naw, first person says 'three point' then the next person states the next number in sequence and so on until somebody screws up; they take a glug out of a fifth or slam a beer and it starts again. Yes there have been times when the first person says 'three point' and then everyone just stares at each other cause no one can remember the first decimal....

[lwknight]

I doubt that very many people have the means to cut their paper to 10/1000 tolerances, let alone 2 or 3 1/1000
Using 3.14 or using 3.14159264 equates to less than 1/1000 or circumferance difference.

[cajun shooter]

I saw that Sine,Secant and Tangent and was told that it was Trig and I thought they was talking about guns as everyone knows that trig is short for trigger.

[mroliver77]

I think Bill is stating that the overall length of the patch comes out to 3.14" for a .500" boolit. No?
Jay

[jhrosier]

I think Bill is stating that the overall length of the patch comes out to 3.14" for a .500" boolit. No?
Jay

No.

His boolit is .5" diameter times 2 (the number of wraps) equals 1, that times pi equals 3.14......

Jack

[Willbird]

I think Bill is stating that the overall length of the patch comes out to 3.14" for a .500" boolit. No?
Jay

Yup you got it, which makes sense :-).