Don't think anything commercially available yet. I think I have some postings about using a cut down stripper clip from a .303 British rifle. Haven't tried it yet so I can't vouch for it. Try a search on this.
I honestly believe it takes the same Speedloader as the 44 special snubbie guns...look at them in the stores...Ill be you score one that works. Shoot well
I have two of the Buckeye Tool speedloaders for my 425 Tracker (.41). Also fits the Taurus 415 (they are labeled 415). Never had a problem with them and they seem really well made.