Yes if you change .1 to .15 then that makes the range .3.... but that isn't what anyone was discussing that I can tell.

I see I started a fun debate.

Bottom line - I threw about 100 charges and none needed more than 3 kernels of H-4350 added or taken away to be dead center on my beam scale. Most needed 0, 1 or 2 (I'd say maybe 40% needed zero adjustment - with the remaining 60% split evenly between 0, 1, or 2 kernels off). This is significantly faster than manually dumping powder onto the beam scale pan and hoping not to go over, pulling it off if I do, etc. Major PITA. I have used a Chargemaster 1500 and found that it was a good bit less accurate than the Lite model I have now.

Wouldn't expect someone to use a CM if they're loading thousands of rounds a year - the FX-120 is a no-brainer. But for someone like me who probably averages around 500 rounds of pistol and 500 rounds of rifle shooting per year, it was a very wise investment over manual dumping, and it performs much too good to consider spending upwards of $1k on the FX-120 setup with auto-trickle.

As for the kernels per grain, I had done a test awhile back on the beam scale trying to determine how many kernels per grain. I'll re-do it with my electronic scale now to see if I come up with a different answer. No, I wasn't trying to weigh one grain of powder - I had come up with a slightly more eloquent approach, but I can't quite remember now.

One more thing - I read something about the error of the CM Lite increased with powder weight - i.e. at low powder charges, the error is lower and increases as you increase charge weight. So it would make more sense for my 6.5CM to see lower variances compared to someone loading up 300NM with 90 grains of powder. But not sure if that's true or not.

I will say that I am very careful to warm up the electronics and do a good calibration before loading with the CM, whether it's the 1500 or the Lite.

Glad to see everyone's having a fun debate on scales today though!

Interesting, finally got to watch it, thanks for sharing.

are going straight from CM to case or do you still hand trickle up to desired weight?

The CM LIte has an auto trickler built into it. I just set it to my desired weight and it does the rest.

This has been a fun read. Three beers and lots of smiles.
Issue #1- Three charges, ascending in 0.1 grain increments (42.0, 42.1, 42.2) total spread of 0.2 gr.
Issue #2- accuracy of the scale it's weighed on. I quit using a chargemaster because according to my beam scale, what the chargemaster showed as 42 grains had approximately a three grain spread that the chargemaster did not show.

I eventually just went back to throwing light with a powder measure and trickling up because that 0.3 grains drove me nuts.

Three beers left and I don't have the lite.

Its always a fun read. Many times disagreement is where learning comes from. Hope we can all look at it positively.

In vintage BMX the saying is cheap, strong, light - pick two. In reloading it's precise, quick, cheap - pick two.

Yep.

To follow up on my last post, my CM Lite must have only had one really good run in it. Loaded a bunch more ammo the other day and it was just about the same as the CM 1500 I'd used before. Lots of good charges but definitely you'd see some that are .1-.2 grains high every now and then. Still glad I got it, but I no longer believe it's any more accurate than the 1500. Works great for my purposes so long as I'm trickling on the beam scale afterwards.