I was asked by a good friend to share this information on 38 Special ammo that I was discussing elsewhere. I have recently loaded all my 357s with 38 Special ammo due to fears of hearing loss should I fire a round inside during a SD situation. My first choice has been the Remington 38 Special +P 158 gr. HP. The +P all lead HP is regarded as the best 38 available for SD by many who study shootings on the street and in lab tests. These loads have been called the FBI load. It may not matter which brand you choose but the Remington has the softest bullet, Winchester is the hardest, and Federal is in the middle. Studies have shown this load to compare well with the GI 45 hardball round. No difference has been found with regard to barrel length with the reading I have done as this question has also been asked.