I too have a SP101 in .327, and a GP100 in .357.
I love the .327 rnd, six shots in a SP and 7 in a GP. The 85 gr load seems perfect in the SP, not far off the ME of a full load .357, and the 100 gr Fed is only 50 lb-ft shy. Pretty decent recoil in the SP, but probably fine with the GP (the...