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Doug Bowser
12-20-2008, 02:56 PM
I have inherited 2 8 pound bottles of surplus powder.

1. Thunderbird Ctg CO.
PO Box 302
Pheonix, AZ

Powder #1870

2. River Valley Ordnance
Harvester, MO

Powder RVO-57

I have no reloading data
Slowpoke
12-20-2008, 09:11 PM
RVO-57 is 50BMG powder in 1992 8 lbs was $26

RVO- 62 is 20mm powder
Doug Bowser
12-21-2008, 12:05 AM
RVO-57 is 50BMG powder in 1992 8 lbs was $26

RVO- 62 is 20mm powder


Is there any reliable data for these powders available?
Maven
12-21-2008, 02:25 PM
Doug, I used to use RVO-62 in my .30-06 and 8mm Mau. In essence it is WC 860: It weighed/measured the same as 860 and chronographed the same, but it may vary a bit more (burning rate, density) than cannister powders do. In either the '06 or 8 x 57mm, I used 48grs. with a LR mag. primer and CB's of 170grs. or greater. There should be loading data for WC 860 on Castpics (bottom of screen) and our archives.