new Bullseye powder vs. old Bullseye
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fc60
LenV
243winxb
jmdavis
hwevers
9 posters
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new Bullseye powder vs. old Bullseye
I recently was given a (cardboard) container ol Bullseye powder. Is there any difference in charge weights between the old and the new?
Thanks in advance.
Best regards,
Howard
Thanks in advance.
Best regards,
Howard
hwevers- Posts : 12
Join date : 2011-06-10
Re: new Bullseye powder vs. old Bullseye
I would say that it depends on storage and moisture. A given volume may weigh more because it has attracted more moisture. Using the same volume with two different lots, one unopened and one used for 3 years the weight can vary. I haven't seen the results vary though.
We have experts on here who can explain it better.
We have experts on here who can explain it better.
jmdavis- Posts : 1409
Join date : 2012-03-23
Location : Virginia
Re: new Bullseye powder vs. old Bullseye
I just started checking weigh by volume between old and new lots.
IMR 4198 ( 18.5 gr vs 19.6 gr.) and Alliant 2400 (13.0 vs 13.6). Sorry no Bullseye yet.
There will be a difference in weight, old being lighter. Why? My guess is some of the solvents evaporate in the older powders. Or outgassing??
[url=http://www.firearmsid.com/Feature Articles/McCord_gunpowder/]http://www.firearmsid.com/Feature%20Articles/McCord_gunpowder/[/url]
IMR 4198 ( 18.5 gr vs 19.6 gr.) and Alliant 2400 (13.0 vs 13.6). Sorry no Bullseye yet.
There will be a difference in weight, old being lighter. Why? My guess is some of the solvents evaporate in the older powders. Or outgassing??
[url=http://www.firearmsid.com/Feature Articles/McCord_gunpowder/]http://www.firearmsid.com/Feature%20Articles/McCord_gunpowder/[/url]
Last edited by 243winxb on 5/24/2018, 10:54 am; edited 1 time in total
243winxb- Posts : 345
Join date : 2013-12-01
Age : 80
Location : USA
Re: new Bullseye powder vs. old Bullseye
My older powder is heavier. But that may be a result of living in the humid mid atlantic. The difference is generally .1 grains or so.
jmdavis- Posts : 1409
Join date : 2012-03-23
Location : Virginia
Re: new Bullseye powder vs. old Bullseye
I wonder if the weight makes any difference if your throwing a charge with your hopper. My Lee drops X amount of powder every time I throw the handle. I don't weigh it anymore. I weighed it once to confirm chart versus actual but never saw a reason to retest. YMMV
Len
Len
LenV- Posts : 4774
Join date : 2014-01-24
Age : 74
Location : Oregon
Re: new Bullseye powder vs. old Bullseye
Greetings,
I have used several lots of Bullseye over the years.
They do vary in velocity with the same charge weight.
The only way to fine tune your ammo is with a chronograph.
Cheers,
Dave
I have used several lots of Bullseye over the years.
They do vary in velocity with the same charge weight.
The only way to fine tune your ammo is with a chronograph.
Cheers,
Dave
fc60- Posts : 1460
Join date : 2011-06-11
Location : South Prairie, WA 98385
Re: new Bullseye powder vs. old Bullseye
Dave,
Do they vary with the same volume? You may be one of the few civilians not working for a manufacturer who can answer that with certainty.
Do they vary with the same volume? You may be one of the few civilians not working for a manufacturer who can answer that with certainty.
jmdavis- Posts : 1409
Join date : 2012-03-23
Location : Virginia
Re: new Bullseye powder vs. old Bullseye
you can have weight/volume deviations based on lots as well. I asked Hodgdon and they told me up to 15% variation from lot to lot.jmdavis wrote:Dave,
Do they vary with the same volume? You may be one of the few civilians not working for a manufacturer who can answer that with certainty.
Chris Miceli- Posts : 2715
Join date : 2015-10-27
Location : Northern Virginia
Re: new Bullseye powder vs. old Bullseye
Greetings,
I have not kept track of the variations.
I recall that 1.6 grains of Bullseye Lot #536 showed the same velocity as 1.7 grains of Bullseye Lot #669.
Every time I change lots, out comes the chronograph.
Cheers,
Dave
I have not kept track of the variations.
I recall that 1.6 grains of Bullseye Lot #536 showed the same velocity as 1.7 grains of Bullseye Lot #669.
Every time I change lots, out comes the chronograph.
Cheers,
Dave
fc60- Posts : 1460
Join date : 2011-06-11
Location : South Prairie, WA 98385
Re: new Bullseye powder vs. old Bullseye
Amen Sirfc60 wrote:Greetings,
I have used several lots of Bullseye over the years.
They do vary in velocity with the same charge weight.
The only way to fine tune your ammo is with a chronograph.
Cheers,
Dave
GerhardG- Posts : 88
Join date : 2018-07-30
Age : 70
Re: new Bullseye powder vs. old Bullseye
I started reloading using Hercules Bullseye decades ago. The same load of 2.7 grains of newer Bullseye still works well under a 148 gr. HBWC in a .38 SPL cartridge. If the powder has been properly stored, it will perform well. There are much better things to worry about in this game, like, "Did I dry fire today?" And since you are asking, yes, the old nickel plated vs. naked brass Winchester primers work equally well. BTW, I made it to outdoor master without a chronograph. I did use the Ransom Rest for 50 yard testing.
BE Mike- Posts : 2604
Join date : 2011-07-29
Location : Indiana
Founder likes this post
Re: new Bullseye powder vs. old Bullseye
I would say unless you're a high master you wouldn't notice the difference.
Larry2520- Posts : 143
Join date : 2017-05-07
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