Gary Reeder
2 totally different cartridges. The 256 Falcon has been
Saturday, August 28, 2021, 13:51

around for several years. It is a 30-30 necked down to 257. In a rifle the 85 grain bullet will do over 3200 fps.
The 251 Falcon is a small revolver cartridge, being just the 25-20 Improved. Some of the loads hover around 2200 fps. If you want the newest reloading manual, the 3rd edition, just call 928-527-4100.