The 2 grain rule between rem and wby brass is usually a good one but it didn't come into play much with retumbo. If I remember right there was a 40 fps diff between the two. I acutally found that my gun really likes the hornady match grade brass in 300 wby. It has about the same capacity as rem brass. The loads I quoted were hornady brass. The funny thing is if you get above 3250 with 180's (hornady brass) the primer pockets seemed to go really fast. Keep it at about 3220 and they stayed decent. I had bought a bunch of the hornady brass when it used to sell for about $25/50....now it's almost the same price as wby brass.
Also..the amazing thing with retumbo and the light barrel is I could keep shooting even with a hot barrel and it kept going to the same place....like I said...I couldn't believe anything as nasty as what I had could get so "likeable" with another powder.
Last edited by kraky111; 11/02/08.
