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Old March 8, 2005, 01:30 AM   #1
PinnedAndRecessed
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Join Date: November 12, 2004
Posts: 449
Question about copper plated bullets

This has to do with .357 ranier reloads. My powder is Unique.

My Lyman loading book says for 125 grain HP the range is from 7.0 grains (minimum) to 9.6 grains max. I assume it's for jacketed HP.

The same manual says for 121 grain cast, the range is 7.2 grains (min) to 9.4 (max).

My Speer manual says, for 125 grain jacketed, 8.6 gr (min) to 9.1 (max).

So it would seem a safe range for any 125 grain bullet, jacketed or no, would be from 7.0 grains Unique up to 9.0 grains Unique.

But I use Ranier copper plated bullets. Their webpage ( http://www.rainierballistics.com/loaddataMW.htm ) says minimum for the 125 grain plated bullets is 5.5 grains Unique to a max of 6.9 grains.

I've already fired some Raniers ahead of 8.0 grains and 9.0 grains Unique, respectively, with no visible signs of excess pressure. That was before I saw Ranier's web page.

Two questions: 1) Why would plated bullets be more fragile than others, 2) Is it safe to go ahead and shoot the other bullets I've loaded with 8.0 and 9.0 grains Unique 3) why the extreme disparity in reloading info.

O.K. Three questions. But you get the point.


Thanx in advance.
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