Similar to the above post my manual had data for 85 gr lead bullets. For 30 Reid, I tried 86 and 90 gr jacketed bullets with 1.5 to 1.7 gr of Bullseye. All combinations seemed to function properly, had no pressure signs, and produced reasonable accuracy, so I settled on 1.5 gr. Of course you will need to use your own judgment with respect to your firearm.
If you want lighter lead bullets, some of the lead bullet makers can swage 32 cal bullets down to 30 cal. Bullet Barn did this once for me, but have been sold since then so I don't know if they still offer this option. I haven't had the chance to try the lighter lead bullets yet.
Edit: just checked and the lighter lead bullets are 78 gr, so just a bit lighter.