Hi Clyde C,
Iver Johnson, 3rd Model ( the 3rd Model was intended/re-designed for 'Smokeless') Factory 'Snub Nose', or, 'Bicycle Gun'...38 S&W C'tg, made around 1930 -
Smith & Wesson 4th Model, made around 1906 I think,.38 S&W C'tg.
Targets shows first time shooting this Revolver, rapid fire, double Action, 5 rounds one handed, five rounds two handed, at 10yards.
Wind blew my slow fire Target off, and I did not bother retrieving it...but, it had a 10 shot group of around 3 inches.
I seem very natural with this one, even though it is very small for my Hands...and, given it was my first time shooting it, and was very Windy out, possibly I could better the results with practice.
Would I carry either of these?
Sure...(But, generally, I would prefer to carry something with a little more heft...)
Of the two, would I expect the longer Barrel to deliver higher FPS?
Yes...
When I said that ".38 S&W is considered below the threshold for defensive shooting'', I am simply restating what the general consensus has seemed to have been for quite awhile.
I am not saying it can not be an effective Cartridge for defensive shooting.
But probably I am saying, if a target is robust or willfully determined or beefy, or intoxicated in some way, it is not likely to be, unless shots are well placed, and, fortuitous.
Small, difficult to see, short-sight-radius-sights, also are a factor if wishing to place shots precisely at any distance.
Ideally, if one has a strong, well build Revolver, one could re-load to higher Ballistics, using more defensively-effective Bullet shapes (Wadcutter, say, but of right diameter of course) and, remain within the range of what the Revolver will handle, thus having more powerful Ammunition than the off-the-shelf Cartridges will deliver.
Probably, such re-loaded Cartridges could safely equal Standard .38 Special Ballistics in some cases, depending on the Revolver.