"... since I do not reload I tried Buffalo Bore offering of 32 auto +P."

I have also fired .32 ACP in revolvers chambered for the .32 Long. But there are two cautions for those who do so. First, the .32 ACP case has a semi-rim, which is enough to keep it from falling into the chamber. However, it is possible for the extractor star to over-ride the smaller diameter semi rim and get cases stuck behind it. It takes some care to avoid this. Second, the semi-rim of the .32 ACP is somewhat thinner than the rim of the .32 Long case. Therefore, there will be excess headspace when the .32 ACP is used and there can be some misfires expected. I have experienced them. Neither condition presents a real problem if you are shooting only at inanimate targets, but using .32 ACP cannot recommended for any self-defense applications. I load .32 ACP cases with .312 lead bullets which work OK in .32 Long revolvers, and I don't see a great deal of difference in grouping performance between .32 ACP and .32 Long loadings.