I went out and shot my 300 RUM with the 180g btips loaded with Retumbo. I am using 95g, with an OAL of 3.690", Fed 215 primer. Velocity is right at 3300fps. Groups are .75 MOA. Not the greatest, but I'm on limited supply of bullets/powder. I wanted to try this load at 1150 to see how close, or consistent I could hit my 14" gong. I had 10 shells with me. My program told me to be xxx clicks, it was off by about 11 clicks. So me thinking the BC is not .507 like NOsler states. It took 2 shots to get the elevation right. The wind was also blowing 10-15 mph. That made things a little tricky. I ended up hitting the gong on my 5th and 9th shot. So I was 2 for 10. I thought it was decent considering its a factory rifle, pretty much a shot out barrel, wind was blowing, and its a hunting bullet, not a target bullet. The 180's sure dont hit it as hard as my 210g VLD's. The 180's sound like a plink, the 210g VLD's sound like a whop. Anyways, I just thought I would share my shooting I did today. I'm going to take this coyote hunting this weekend just incase 1 is standing out there 600-700 yards.