Originally Posted by nr8l
Hey all, I'm looking to see if any of you have/are willing to share a really good load for 300 rum in a sendero.
I am also trying to build a lightweight rem 700 in 7mm. I dont expect to get as good a groups due to it not being a bull barrel, but I am hopefull to get moa to maybe...600???
Anyway any info would be greatly appreciated
I can't help with the 300RUM, but I've had great results with my 7mm Rem mags over the last 30yrs. My Rem700 only has a 24" thin barrel (a takeoff from an ADL). Over the years, I've tried just about every powder/bullet/primer combo you can imagine. I used H4831 with the Hornady 154gr spire point flat base at aroud 3100fps in 26" barrel for a lot of years, a long time before boattails were common and cheap for hunting bullets.
Now, I use RL-22 and 160gr Nosler Accubonds driven at 3015fps. Incredibly accurate! Sub 1/2 moa at distance.
One important thing that I've noticed over the years, is that I've had better accuracy with standard large rifle primers (for the 7mm) than the mag primers. I seat the 160AB at about .020" jump or slightly less and use rem 9 1/2 primers.
My 7mm weighs exactly 8 lbs ready to hunt (bipod,scope,sling,shells).