I need a little advice. I'm loading .357 rounds using a Speer manual (the latest version) which calls for 6.9 grains of Unique as a starting load for a 158 grain bullet. So far so good. Here's the problem - I'm using 158 grain RN Berry's plated bullet. The Speer manual calls for the 6.9 grains of Unique for the Speer bullets which are TMJ or Hollow points. The manual also calls for 6.0grains of Unique if using a 158 grain Lead SWC.
So, which is it? Do I go with the 6.9 grain starting load since the Berry's are plated? The Berry's are .357 diameter. The lead bulet mentioned in the manual has a .358 diameter. I hope I'm not confusing eveeryone, but the Berry's bullets I would think are the same as FMJ even if the plating isn't as think.
Any ideas guys? Again, it's a 158 grain RN Berry's plated bullet .357 diameter using Unique powder.
Thanks for the help....
So, which is it? Do I go with the 6.9 grain starting load since the Berry's are plated? The Berry's are .357 diameter. The lead bulet mentioned in the manual has a .358 diameter. I hope I'm not confusing eveeryone, but the Berry's bullets I would think are the same as FMJ even if the plating isn't as think.
Any ideas guys? Again, it's a 158 grain RN Berry's plated bullet .357 diameter using Unique powder.
Thanks for the help....