Look at this post. I also included a test.
http://forum.accurateshooter.com/th...t-part-1-repeatability.3961911/#post-37444374
http://forum.accurateshooter.com/th...t-part-1-repeatability.3961911/#post-37444374
Highly Accurate Powder Scale
- Thread starter treillw
- Start date
No worries
Scott will get it done and you will have a terrific scale.
Remember he’s a Chemist by trade tuning scales is a labor of love.
Jim
Haven’t tried it yet, Not even worried about it I have full confidence in SCott Parker scales
carlsbad
Lions don't lose sleep over the opinions of sheep.
I use a Sartorius BA110. This is a $3000 laboratory scale that measures to .001 grain. However, it is a discontinued model, perhaps 10 years ago. So they sell cheap on ebay as they are retired from laboratories. parts and service would be prohibitive but if you can get them for $200, call them disposable. Sometimes one with broken glass will go real cheap and broken glass can be easily replace with lexan.
YOU should tell what distance you shoot , and why you feel a scale that will weight 1 gn. of powder is necessary.
Shooting at 600 yds and beyond the shooters abilities on all aspects of long range shooting will have a much greater effect on accuracy that 1 grain one of powder deviation from load to load.
This BS about scales that will weight 1 grain of powder comes up about every 6 weeks or so. I would suggest making one of them a "sticky " or a topic for the "bulletin Board " BUT as everyone will notice the classifieds,members are not even able to put an accurate description and can't muster enough energy to list in the title WTB, WTS, WTT. So listing anything as a "topic" would be a waste of time because reading or doing a search must be beyond their capabilities, or they are just lazy
There is only one Autotrickler they sell for around $800. I've got one and love it but if I were you I'd get a chargemaster and if you decide later get a autotrickler
Dandy auto trickler??
Ned Ludd
Silver $$ Contributor
The Sartorius Entris 64-1S is a fantastic analytical balance and would do everything you want and more. However, the price tag is around $1200.00. I was fortunate enough to obtain a Mettler Toledo analytical balance several years ago that is probably at least a couple rungs up the ladder from the Sartorius equivalent of the Entris 64 at that time. If it ever goes out, I would buy the Entris as a replacement without hesitation. My second choice would likely be the A&D FX-120i.
When it comes to buying an analytical balance, you generally get what you pay for. Good magnetic force restoration balances do not come cheap. It is probably worth thinking about your typical ES/SD values with whatever system you're currently using to weigh powder, and come up with figures that are "acceptable" to you. For example, many shooters would consider anything under 10 fps for 5 shots with a .308 Win load to be acceptable. That typically would mean the ES value would be less than 20 fps RES for 20 shots. Compare that value to where you are now, and you will have some idea of how far you need to go.
Bear in mind that if you're currently weighing powder to, let's say, +/- 0.1 gr, and you improve the precision to +/- 0.02 gr, the ES/SD will not automatically shrink to 1/50th the current value. Buying a balance capable of weighing powder to +/- 1 kernel (or less) will usually mean that charge weight variance will no longer be the limiting source of error in terms of ES/SD. Other factors such as primer choice, powder choice, uniform neck tension, etc., are ALL on the list of items that cause velocity variance. Buying a really expensive balance simply means you can remove that ONE factor from the list. If charge weight variance was previously a limiting source of error in velocity variance, whatever the next limiting factor in the reloading process happens to be will then be the new limiting factor. If charge weight variance was previously NOT the limiting source of error in velocity variance, the new expensive balance won't make any difference.
Another way of thinking about this is that in theory (on paper), a single kernel of powder in a medium-sized cartridge might be worth at the very most 1 to 2 fps velocity. With an ES value around 10 fps, that means (in theory) that your charge weight could vary by as much as 3 to 5 kernels before your ES would noticeably increase. What that really tells you is that the 10 fps ES values was largely caused by something OTHER than charge weight variance. Buying an expensive balance cannot make that any better.
My point is that having some idea of the velocity variance you're willing to accept will give you some idea of the maximum (theoretical) charge weight variance you need to have. Then you find the weighing system that will fulfill those criteria. In other words, don't spend a lot of money on an expensive balance if it's not going to markedly improve the loads you develop.
When it comes to buying an analytical balance, you generally get what you pay for. Good magnetic force restoration balances do not come cheap. It is probably worth thinking about your typical ES/SD values with whatever system you're currently using to weigh powder, and come up with figures that are "acceptable" to you. For example, many shooters would consider anything under 10 fps for 5 shots with a .308 Win load to be acceptable. That typically would mean the ES value would be less than 20 fps RES for 20 shots. Compare that value to where you are now, and you will have some idea of how far you need to go.
Bear in mind that if you're currently weighing powder to, let's say, +/- 0.1 gr, and you improve the precision to +/- 0.02 gr, the ES/SD will not automatically shrink to 1/50th the current value. Buying a balance capable of weighing powder to +/- 1 kernel (or less) will usually mean that charge weight variance will no longer be the limiting source of error in terms of ES/SD. Other factors such as primer choice, powder choice, uniform neck tension, etc., are ALL on the list of items that cause velocity variance. Buying a really expensive balance simply means you can remove that ONE factor from the list. If charge weight variance was previously a limiting source of error in velocity variance, whatever the next limiting factor in the reloading process happens to be will then be the new limiting factor. If charge weight variance was previously NOT the limiting source of error in velocity variance, the new expensive balance won't make any difference.
Another way of thinking about this is that in theory (on paper), a single kernel of powder in a medium-sized cartridge might be worth at the very most 1 to 2 fps velocity. With an ES value around 10 fps, that means (in theory) that your charge weight could vary by as much as 3 to 5 kernels before your ES would noticeably increase. What that really tells you is that the 10 fps ES values was largely caused by something OTHER than charge weight variance. Buying an expensive balance cannot make that any better.
My point is that having some idea of the velocity variance you're willing to accept will give you some idea of the maximum (theoretical) charge weight variance you need to have. Then you find the weighing system that will fulfill those criteria. In other words, don't spend a lot of money on an expensive balance if it's not going to markedly improve the loads you develop.
RCBS
After I throw a charge I automatically trickle up . Cost $20.
Some times I think people either have to much money and need to figure out ways to spend it, or their just plain lazy and need some gadget to do it for them.
Kiss method.
Keep
It
Simple
Sally
Since most stick powder kernels weigh 0.02g, why would you need finer resolution? Are we chopping kernels into quarters? Is anyone doing ladder test in 0.02g charge weight increments?
And if I recall what my A&D 120 manual says, changing to grams will provide that finer resolution as long as you’re willing to do the conversion
And if I recall what my A&D 120 manual says, changing to grams will provide that finer resolution as long as you’re willing to do the conversion
I’ll let SCott speak for himself on this topic, personally we communicate quite well.
Jim
I attested to the quality of his work and that he would get the job done.
I’m not going to speak for another man, you might I won’t “
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