Digital scale anti-vibration

[Tesoro]

It's not a thousandths of a kernal, it's a thousandths of a grain, the measurement of weight. I've never met anyone who actually cuts the kernals. Even +/- one whole kernal is unlikely to make a difference in ES/SD and I certainly can't shoot the difference.

If my targeted charge weight is 40.5 grains, my scale can read to 40.500...I usually just get it as close as possible to the middle, so 40.550. If the charge ends up weighing out to 40.570 it will make no real difference in that load.

I know! That was a joke. A 10th of a grain threshold is sufficient.

 

[6Creed73]

I know! That was a joke. A 10th of a grain threshold is sufficient.

Gotcha, my first instinct was you were messing around, but I've seen worse questions from people who were serious lol

 

[Rocketvapor]

One tenth of a grain (is that +/- 0.05grains or +/- 0.1 grains) might not matter in a large cartridge, or when you have found the center of a node that's a few tenths wide.
For smaller cartridges a tenth could break a line on a F-Class target.
This is about 1 grain variance in charge weight for a 22 Nosler.
Velocity from about 1830 to 1995 across a 600yd E-Target.
Seem to have a "NODE" @ 1900 and another @ 1970.
About 3 tenths means a high '9' or a low '9'.
No wind that day

 

[6Creed73]

One tenth of a grain (is that +/- 0.05grains or +/- 0.1 grains) might not matter in a large cartridge, or when you have found the center of a node that's a few tenths wide.
For smaller cartridges a tenth could break a line on a F-Class target.
This is about 1 grain variance in charge weight for a 22 Nosler.
Velocity from about 1830 to 1995 across a 600yd E-Target.
Seem to have a "NODE" @ 1900 and another @ 1970.
No wind that day

View attachment 1463139

Agreed, I like to settle my weights to the hundredth of a grain, that way I know I'm accurate to the tenth at the very least.

 

[Dkk37058]

I’ve measured the individual kernels of the different powders I use and get my scale to the closest kernel above or below the charge weight I’m going for and sometimes it’ll be on the money . This seems to work good for me

 

[JMayo]

I can get 35.596 so darn much when I'm looking for 35.6.
A kernal is .010 so i go with 35.606. never do i accept lower.... Just my thang !

 

[6Creed73]

I can get 35.596 so darn much when I'm looking for 35.6.
A kernal is .010 so i go with 35.606. never do i accept lower.... Just my thang !

I don't go lower either...If it was my load I'd try to get it as close as I can to 35.650 so the +/- margin of error keeps me in my target tenth (35.6)...Id prefer not to be 35.599 or 35.700, I want to be in the middle of that.

 

[motzauce]

you can get granite slabs cheap from grizzly. just put some rubber feet underneath to further enhance dampening. i have no issues at all.

What rubber feet you using? got myself a nice 90 pound piece of granite, and it turns out my bench isn’t level

 

[Benchrest Braxton]

What rubber feet you using? got myself a nice 90 pound piece of granite, and it turns out my bench isn’t level

literally just some cheapo amazon rubber sticker things. they are small

 

[rlporter507]

I got one of these

Tekmat Canik TP9SF Gun Cleaning Mat

The Tekmat Handgun Gun Cleaning Mats are large enough to handle a fully disassembled handgun with room to spare for tools and accessories. The...

www.midwayusa.com

$5 and a scrap piece of granite from the local countertop place free from there dumpster. Mat down first, then the granite on top, no problems.
The one thing I changed was not putting the pan on in the front, but on the right side. I found that just moving the air breathing and moving arms dropping powder then moving to the scale was affecting it.
With the air shield on the front it blocked all that.

 

[Doom]

Neither phenomena shown in the videos is vibration related. The swing in weight with the dropped kernel is due to the energy from dropping the kernel which results in a higher than weight only display of weight (force). The way to fix this is to reduce the scale's response time (increase filtering). The second video shows the effect of changing the leveling of balance not vibration. This can be to the tabletop or from the floor. Placing a slab of granite is not likely to fix this but it may if the ends of the granite site on less flexible portions of the table.

 

[RCE1]

you can get granite slabs cheap from grizzly. just put some rubber feet underneath to further enhance dampening. i have no issues at all.

That's what I did. I found a "surface plate" online (free shipping) that is an inch bigger than the scale on all sides, added some stick-on rubber feet and it seems pretty stable. My 2" thick counter top is supported on kitchen type cabinets and bolted to a CMU wall, so its pretty solid.

 

[BoydAllen]

I suggest that while you are using the scale you move it out to the edge of the bench so that you do not lean on the bench while operating it. The other thing that I tried one time to deal with a portable shooting bench that was to flexible, was to build an arm rest that floated above the bench. It worked. If your bench is not attached to the wall, you might consider building a sturdy shelf that is just off of the bench top, but does not touch the bench.

 

[hoz53]

Gotcha, my first instinct was you were messing around, but I've seen worse questions from people who were serious lol

the bench my fx120 sits on is separate from my loading bench but near it. its also fastened to the wall. my powder measure and all the other stuff sit on the loading bench.
their is a 1/2” steel plate between bench and fx-120. i use an auto trickler beside the fx120 - the fx 120 i have is as sensitive as you describe. it all has worked out well. i never had chargemaster type devices, i went strait from a beam scale to an fx120 and i dont want to go back.