Saturday evening!
I have the 4 5/8 Single Seven. 3 gr of Universal or even 4.3 gr of SR 4756 will suppress most of the fireball and a lot of the offensive crack.
But 21 gr of H110 will light up the front porch when I touch it off at night.
Not questioning your veracity but is that a typo? 16 or 17 grains of H110 is a max load in a .357 Magnum with 158 grain bullets while 21 grains H110 is near top end in a .357 Remington Max. Could that be 11 grains?
GOOD CATCH!
Wow, that was a total brain fart. I run 21 gr H110 in the 41 mag.
Let's try 12.8 gr H110 with a 115 in the 327. I had some good data that the 327 would run up to 13.5 gr H110 with the 115, but it was too hot in my single seven. I did not get smooth extraction until I got down to 12.8 gr.