Thanks guys for all of your responses. Because some say yes and others no, I will stick to the norm until I gain much more experience Heck, I am still looking for that perfect .38 load anyway! Almost have it, I think. My next 4 loads should dial it in and I will be able to choose the best for this pistol. Then I need to re-do the whole process for the shorter barreled .38.......
What brought this question to mind, is that I see an end to the .38's and I will be moving on to my 9's. I only bought 100 sample bullets for the 9's and now know that it will take me many more than that, hence the original question about using the .357 diameter .38 bullets. I have lots of them.
This is a great hobby!