Thread: 357 mag subsonic reloading data

38 spl data seems to be based on pistol length barrels and to 38spl OAL’s.
If i use this charge data with a larger case capacity, how will this translate? If I load to 38spl OAL from what i understand the jump to the lands becomes an issue.
I look at the recommended charge of AP70 and in my head it looks tiny. I’m wondering if that may be the cause of the ES increase and maybe I’m using the wrong primer?
I’m not scared of doing the work up but more wondering if anyone else has been here before. Also the shortage of the Powder/projectile choices forces 1 to short the process and not waste the items to come to similar conclusions others have crossed off.
I have Titegroup and 296.