Plated Bullet Load data?

[Chief Running Water]

I am new to the Forum and would like to say hello. Hello! I am loading for 10mm using Proofmark 155 gr. flat nose copper Plated, and Accurate #9.
I have had conflicting advise about the load data. Some have said to just load to jacketed specs, but others have said that I must load to cast bullet specs. I can see some validity in both arguments but am not sure. Glade to be a part of the Forum!

[Thecyberguy]

If nobody gets back to you.....try the bullet website and see what they say.
TCG

[Chief Running Water]

"try the bullet website and see what they say."
That is the strange thing I can't seem to find the official data.

[Thecyberguy]

This from Berry's plated bullets website:
FAQ: How fast can I shoot these bullets?
Velocities depend on the caliber, but as a rule of thumb, we recommend you don't shoot our plated bullets over 1250 feet-per-second. Our 44's actually shoot best around 1150 fps. 45's are generally good at 850-900 fps. Our bullets are not recommended for magnum velocities over 1250fps unless the bullet description denotes a thick plated bullet with a higher listed maximum for velocity.
http://www.berrysmfg.com/faq-q10-c1-...e_bullets.aspx

TCG

[Thecyberguy]

Welcome to the board......

[Chief Running Water]

"When loading plated bullets we have found best results using low- to mid-range jacketed data in the load manual" (from link)
sounds good to me. Thank you, and Thank you for the welcome.

[Chief Running Water]

Also for good measure "Do not exceed mid-range loads. Do not use magnum loads. "