While making .224's out of .22 Long-Rifle RF cases (without trimming) it occurred to me that I could really make just about any weight bullet I like 63grs & below. Just seat a lighter & shorter core. The finished bullet would have the same outward dimensions but a deeper opening in the nose. I'm sure others have tried some experimenting with this, so I was wondering, are there any "rules-of-thumb" or "best practices" on making lighter bullets? Is there a point where the depth of the core upsets the balance of the bullet & causes it to tumble in flight?
I searched the threads first for an answer, but most advice is to use .22 Short cases or trim the cases. Someone mentioned not to go below 50grs. I just finished my first batch or 50grs but I haven't shot them yet. Will a 40 or 45gr bullet in a LR-RF jacket not fly straight? I am assuming they would be safe(?)
TIA...