That's fine. Personally, I'll verify my load with the chrono and another electronic scale and I'll be at the range shooting while you're at home reloading.
Talking about a thousandth of a pound or whatever might sound scary to someone who has not loaded much, but to someone who loads thousands of rounds a year, I realized long ago that I'm not reinventing the wheel here. I nearly always load only from published data. I have a log of everything I load.
Not to mention that most of my loading is for a gun that costs thousands, not a few hundred.
I recognized in my post that others have different loading procedures. But for me personally, so long as the scale has a 5% tolerance or so, it's perfectly safe.
So, you're shooting a gun costing "thousands" and you're not willing to spend $125 on a quality scale? Shows where your priorities are, I guess.
I've been loading for over ten years and haven't had a mishap due to an over/underload and I'd like to keep it that way. I do load on a progressive some times and a single stage others, but I always verify the importian details with quality equipment.
Doug K