I loaded several hundred Berry 100 Grn RN for use in a S&W Bodyguard .380 and did have a problem. I used the load data that most books suggested and an OAL of .98. At .98 the bullet would hit the step in the chamber, when I went to .965 - .970 the gun cycled fine and fully closed. I think This could be just a BG problem but not sure, maybe a combination of BG and the shape of the Berry 100 gr RN.
Don