Down to the kernel

[fairchaser]

What's the best, least expensive method for measuring powder down to the kernel of powder. I use the RCBS Chargemaster and it measures to the .1 of a grain which equates to about 4 kernels of Varget. I've read that 1 kernel equals about 1.7 FPS. So 4 kernels would equal 6-7 FPS in extreme spread.

If I wanted to eliminate powder as a variable, what's the cheapest method?

 

[DaveB]

I only do this for my 06. Tedious

10-10 RCBS beam scale, 59 or 60 grains. IMR4350

scoop/meter close to mark. trickle until beam hits mark. drop one piece of powder until beam marker just barely edges off mark. each piece of 4350 seems to weigh. Don't have a digital scale. I would need one that had plenty of decimal points. Flake/ball powders are hard to get perfect IMO.

Note: jump can produce same or better results. So: FPS and accurate recipe first then get shot-to-shot spreads as (repeatedly) close to zero as possible and then focus on getting jump to magic spot.

some results


I have quite a few 06 rounds in both Partition and Accubond that are fairly accurate because once I get into this tedious routine I will load until my eyeballs fall out so I don't have to do it again for a long time.

Oh. Do not shoot your chrony.

 

[fairchaser]

I only do this for my 06. Tedious

10-10 RCBS beam scale, 59 or 60 grains. IMR4350

scoop/meter close to mark. trickle until beam hits mark. drop one piece of powder until beam marker just barely edges off mark. each piece of 4350 seems to weigh. Don't have a digital scale. I would need one that had plenty of decimal points. Flake/ball powders are hard to get perfect IMO.

Note: jump can produce same or better results. So: FPS and accurate recipe first then get shot-to-shot spreads as (repeatedly) close to zero as possible and then focus on getting jump to magic spot.

some results


I have quite a few 06 rounds in both Partition and Accubond that are fairly accurate because once I get into this tedious routine I will load until my eyeballs fall out so I don't have to do it again for a long time.

Oh. Do not shoot your chrony.

Thanks Dave: that would be the cheapest and most tedious method. I've also seen these vibrating Tricklers that will meter out one kernel at a time. My 50-05 beam scale will show a kernel too. I could use my chargemaster to get close then trickle up to the desired level but I need a scale that goes past one decimal. My eyes aren't good enough for tweezers either. I'm trying to decide how worth it it really is.

 

[jlanecr500]

I set the charge master to .5 gr below target and trickle the final amount.

 

[infoman jr.]

The RCBS Match Master will measure .04 grains for $900.

 

[fairchaser]

The RCBS Match Master will measure .04 grains for $900.

I saw a video on the new matchmaster, by RCBS. It's cheaper now at about $450. Well worth the price and will get you down to the kernel on most extruded powders. That one kernel could be the difference between a 9 or 10 and an X or 10. It depends on how wide your powder node is. For me it's only about an 1/8 MOA between 1-2 kernels difference.

 

[fairchaser]

I set the charge master to .5 gr below target and trickle the final amount.

This is something I'm considering and may try to see how much vertical dispersion I have both ways.

 

[fairchaser]

Just as a follow up, I purchased a dandy trickler that trickles one kernel at a time and used that to trickle up my load for a ten shot test. My SD was 5 FPS with an extreme spread of 14 FPS. That's an improvement so I think continue to use this method.

 

[TiminTN]

It takes a scale that will read to the 100th grain, instead of 1 tenth of a grain. A jewelers scale is what you want. small ones sell reasonable.

 

[fairchaser]

It takes a scale that will read to the 100th grain, instead of 1 tenth of a grain. A jewelers scale is what you want. small ones sell reasonable.

I agree Tim. I'm sort of flying blind with the chargemaster. Until I can get a scale that has more decimal places, I have to measure results versus scales. Erik Cortina has a YouTube video showing this trickle up method and then measuring the results on a high end scale. It shows you can get down to the kernel with this method on a chargemaster But, I'll still probably get a scale just to be sure. Thanks for the suggestion.

 

[Wiley]

It takes a scale that will read to the 100th grain, instead of 1 tenth of a grain. A jewelers scale is what you want. small ones sell reasonable.

Tim is correct and I use a GemPro 250 and it measures down to 2/100 of a grain.

Here's a review.....
https://www.accurateshooter.com/gear-re ... le-review/

 

[DaveB]

Actually, that is a good price.

I would tend to connect it up with a good line conditioner.

If my 10-10 should die I may go the digital route.

 

[mr.big]

I had a gempro 250 bought used off accurateshooter fir 100 bucks..it worked well and weighs down to .02 grains..it burned up in the fire and they dont make that exact model anymore but they come up from time to time.

I had better luck with it using batteries though as it acted weird when plugged in

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