Without going down the thread jack rabbit hole too much, I only began casting when I discovered powder coating. Didn't like the lube or the dirt or the smoke from lubed bullets.
I believe coated boolits are more forgiving on mix than lubed. Cast/coated boolits are very close to the experience you get from plated bullets.
The only problem I had with leading was due to heavy crimping through the coating. Another issue with leading could be boolit sizing. Slightly undersized cast/coated rounds with a hot powder like Titegroup can allow gas blowby cutting of the coating. Conversely, coating being slightly breached on the occasional loading process issue seems to be overridden by a good tight seal created by properly sized boolit.
I shot a fair bit of competition and never was big on overcleaning. I typically clean when the pistol tells me to.
When I had the leading issue, it became evident in a steel match. Accuracy went bad, real bad. It was a bit embarrassing when I got home to find the leading problem. Prolly should have looked down the tube a little more often? 
Other than a PIA to clean leaded barrel and bad accuracy, there were no adverse effects on the pistol though.
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Now, back to the preppers should have a G19 in the safe discussion.
I believe coated boolits are more forgiving on mix than lubed. Cast/coated boolits are very close to the experience you get from plated bullets.
The only problem I had with leading was due to heavy crimping through the coating. Another issue with leading could be boolit sizing. Slightly undersized cast/coated rounds with a hot powder like Titegroup can allow gas blowby cutting of the coating. Conversely, coating being slightly breached on the occasional loading process issue seems to be overridden by a good tight seal created by properly sized boolit.
I shot a fair bit of competition and never was big on overcleaning. I typically clean when the pistol tells me to.
When I had the leading issue, it became evident in a steel match. Accuracy went bad, real bad. It was a bit embarrassing when I got home to find the leading problem. Prolly should have looked down the tube a little more often? Other than a PIA to clean leaded barrel and bad accuracy, there were no adverse effects on the pistol though....................................................
Now, back to the preppers should have a G19 in the safe discussion.
