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These days there are factory big bore snubbies. . . back in the 70s and 80s N-frame snubbies did not exist so Jovino, Belhert and others steeped up to the place and gave the public what it was craving.
Here is my Belhert. It has a 2 3/8" barrel. Custom snubbies of the day were between 2 5/8" and 2 3/8".
Today you can buy Night Guards with their 2 1/2" barrels.
Then there are the 2" barreled N-frames. Here is an 8 shot 357 Magnum
In 45 S&W offered these in 45ACP or 45 Long Colt like the pair below.
I like the 45 snubbies so much that I grabbed 4 extra barrels so that I could build a few with adjustable sights.
I also grabbed a 3" for a future project. I wish I could have gotten more than one of these as well.
Then there are the snubby made by other manufacturers. Here is a Astra Terminator
Taurus has/had an entire lineup of 5 shot big bore. These are about L-frame size.
With all of that going on it is far more practical to buy one than have a gunsmith cut one down for you. However if money is no option and you really want what you want, you can have anything made.