So I emailed a custom maker about a leather holster. My original question was would one holster work for both a J frame and an SP-101. He replied no. That's cool, sort of what I expected. I called the shop to order two holsters and was told that ordering a 3 inch J frame holster was not going to be safe for use with shorter barrel lengths. No explanation of why it was a safety issue related to barrel length but to her credit the lady told me to go buy an Uncle Mike's if I wanted a one size fit all. I politely exited the phone call but am curious if those more in the know here would be able to tell me why putting a J frame (2.5 inch 63 vs 3 inch 63 or 642 or 340pd, etc.) in the holster would affect retention. FWIW it's a pancake style holster so no top strap.
Thanks,
Spence