Originally Posted by Long Time Long Ranger
If this rifle is for hunting purposes where you will be packing it or carrying it while hunting all day you will be much happier in the long run with a 26" barrel 338 RUM. Both it and the 338-300 RUM lose very little velocity per inch of barrel. 15-20 fps per inch maybe. The 338 RUM will do anything the 338-300 RUM will do with over the counter cheap products and no fuss necking up 300 brass and fireforming. Why go to all the trouble for the same end result.
My 26" barrel 338 RUM will shoot the 300 grainers to 2800 fps but my pet load is the 225 grain Cutting Edge bullet .64 bc at 3350 fps.
Depends on how you plan on using the rifle then build a rifle to suit that purpose. So let us know your purpose then we can tailor make you a rifle.
I am loading some 225 gr cutting edge d67s as we speak..out of a factory 338 rum, and also a full custom gun..custom gun has a mag of 3.820Wyatts...factory gun is 3.680....3.820 is perfect with the seal tite band...the factory gun is quite a bit deeper..Is that gonna be a problem...since the band is half way down the neck....should I change to an extended mag like the one mentioned earlier.around 3.90...Since you test these with my favorite caliber...you would know...also are you single feeding these, or do you have an extended mag...which would you recommend...thanks LTLR