Estimating # boolits/ingot

[Jal5]

Did I figure this right?

For a 170 gr. boolit:
1gr.=0.002oz.
170gr,=0.34oz.

47 of these boolits/lb. ingots
2352 boolits/50lbs. of ingots

If all the boolits cast correctly :grin:

Joe

[fishhawk]

well i figured it this way 170 gr boolit X 2352 =399840 grains 399840 grains divided by 7000 gr (1lb) = 57.12 lbs steve k

[ghh3rd]

7000/170=41.17647059

41 boolits / lb

[257 Shooter]

7000/170=41.17647059 41 boolits / lb 50LBS 2058 boolits

[rob45]

Fishawk's math is correct.

There are 7000 grains to one pound.

Knowing this , one can determine the results of two different scenarios:

1. Let's say you wish to make a certain number of bullets, and need to know how many pounds of lead is required.
IOW, How many pounds are needed for a given number of bullets?

(bullet weight in grains) x (number of bullets) / (7000) = pounds needed

example: (170 grn bullet) x (2000 bullets needed) / (7000) = 48.6 lbs

I like to add 5% to that, because nobody completely uses all the lead for making bullets. A minor amount of lead is left in the pot. In addition, how many moulds actually hit target weight? A 170 mould may actually cast 174 grains.

So the 5% cushion now makes 51 lbs needed for 2000 (170grn) bullets.
48.6 x 1.05 = 51


2. Let's say you have an inventory of lead and wish to know how many bullets that supply will give you.
IOW, How many bullets will a given amount of pounds make?

(total pounds of lead) x (7000) / (bullet weight in grains) = number of bullets

example: (50 pounds lead) x (7000) / (170grn bullet) = 2058 bullets

Again, I like a 5% cushion for reasons stated in the first example. In this case, that would be 1960 bullets for every 50 pounds of lead.
2058 / 1.05 = 1960

[Doc Highwall]

Remember the 7000 grains to a pound. You will use it also to find out how many shots you get to a pound of powder and how many primers you will need for the amount of powder you have when stocking up on supplies. Say you have a favorite load that uses 10 grains of powder and you get a deal on a 4 pound keg of powder. 7,000grs. x 4 = 28,000grs. / 10grs. = 2,800 shots which means you will need to buy 3,000 primers for that powder giving you one less variable for your load.

[Jal5]

Thanks guys that was just the information I was looking for.

[runfiverun]

i find it much easier to just cast a bucket full then do another boolit.