[Leftysmokum]

My brother just bought a new RCBS Grand--we can not find a powder bushing chart for Promo--he will be loading 11/8--fig. 8 in STS with Fiochi and Promo what powder bushing for 1200 f.p.s.--I will use a powder scale to check 19.0--Thanks Jim

 

[gridlock]

Leftysmokum,
There is no powder bushing chart specific for Promo. Promo varies from lot to lot so you may need several different bushings to arrive at your desired charge.I would suggest that you use your powder scale when you get a new container of powder.

 

[XP100]

Start with the listings for Red Dot and use your scale to go up or down in bushing size from there. . Then check weight with every new jug of powder. It varies a in density from lot to lot.