powder weight variance

[scott/r]

What variance are you guys deeming as acceptable. At the moment my scales have a + - .2 of grain of fluctuation. Zeroing the weight of the pan on my Lyman scales and then removing the pan gives me -118.0 grn. Then when I'm reloading it will fluctuate between - 117.9 and - 118.1 grns. In my head this is not good enough, but am I being to anal about it. I'm loading for a 308 shooting target rifle. And before you f class boys start on about only needing a 2moa gun and load, I am still chasing a sub 1/2 moa gun/load to compensate for my abilities haha.

[Brad Y]

My scales read +/- 0.02gr. It changes with each kernel of 2208 and 2209. I make sure the loads are exact. You think your anal now?

[scott/r]

What scales do you have that measure .00 grn ? And where are they available from?

[Brad Y]

A&D lab scales. Google them and you will find some Aussie web stores that sell them.

[scott/r]

Thanks, I just found the thread on these a couple of pages back. I gather they are still living up to their reputation?

[Brad Y]

Happy with mine

[Amac]

Hi Scott

I run a GEMpro 250. 0.02 gr increments. Some minor scale drift but if you watch it there isn't really an issue.

I feel that if you can take a variable out of your set up then why not.

Cheers

Andrew

[ShaneG]

.2 gr variation in load will give approx 20 fps velocity spread with 06H and 155 gr pills in my experience.
Run a program on what that ES will give you in vertical at 1000 yds?
Some of the top end TR guys are very close to what the best F Class reloaders are doing.
They have actions; barrels and stocks capable of .250 Moa so why not have an edge?