Exactly! And even tight revolvers can put a good flash out the gap between the forcing cone and cylinder, but that and the compensated blast is small compared to what comes out the front. You can sometimes find out which loads are going to be low flash by checking comments on line, but if you’re serious about it you need to test them in your gun in low light to make sure they’ll work for you.
Is the Corbon you’re talking about the stuff they recommend for snubbies?
Ya wanna talk about muzzle flash, fire the Blackhawk 30 carbine. The flash goes out 18 inches!
However they make a very nice I use it in my S&W 642CT carry Corbon make ammo for all makes and models.
Especially for defensive use
110g .38 Spl +p 1200fps using the DPX bullet.