sifting bp

[Rustybob]

where can I get a sieve for sifting bp. I think cal-graf is out of business

[John Boy]

What you are requesting are Cole-Parmer Testing Sieves, 8 inch, Brass Frame/Brass Wire
https://www.coleparmer.com/p/cole-pa...ass-wire/2884#
You have to determine the Hold powder mesh size you want: 10 to 270 mesh - they are expensive

If your purpose is to remove the graphite fines from a can of powder: buy a knee high cotton athletic sock - pour the powder in the sock - roll the opening closed - rock the sock back & forth 15 to 20 times. The fines stick to the inside of the sock - pour the powder out and back into the can

This is called Socking BP

[Rustybob]

thanks for the info John Boy

[indian joe]

go on ebay and buy stainless steel screen mesh in small sheets - make a frame outta 2x1 pine

[kokomokid]

I got brass screen from China and made a frame like Joe. It is a waste of time on Swiss.

[Chill Wills]

It is a waste of time on Swiss.

I sure agree with that.

It may be a waste of time on the lesser powders too. I don't know even though I own a Cal-Graph screen and tumbler set.

It ends up that cruddy powder is still cruddy powder after the fines are removed. I have not been able to prove to myself that screening poor performing powder improves it.
Maybe I should take the removed fines from the lesser powder and add it to Swiss to see if it then shoots poorly.....Nah!

[Geezer in NH]

http://www.akmining.biz/cart/tyler.htm

[wade]

i just dumped about 1/2 inch of the bottom of a can of swiss 1 1/2 , no.4 powder , a lot different in the compression effort , the weight per load was the same ,, didnt trust it, now what
? wade