I think an electric pot will make all the difference as you're close now.
The only suggestion I'd make is get some tin to add to your lead when needed. There are more than a few advantages to adding tin. Fill-out will get better, your bullet weight will drop much closer to advertised, and the sprue will cut much cleaner without smearing. Lead free solder and pewter are great sources of tin.
What I did was hit every thrift and antique store to find cheap pewter(tin) and managed to find five pounds for about $10 in one afternoon. I melted the pewter and cast come 200 grain 45s which actually dropped at 138 grains. Using range scrap lead, my Lee 451-200 SWC mold was dropping at 206 grain, so when I added two tin bullets to each pound of lead, that mold started to drop a consistent 200-201 grains with a much lower reject rate. If you are going to look for pewter, only get the food grade stuff, drink cups, pitchers, plates etc, which is pure pewter. Stay away from figurines, candlesticks and such as those are mostly lead and have other undesirable junk mixed in.