230gn Sierra Matchking & 300 win mag

Feb 16, 2017
225
12
18
North Bay Area
#1
Anyone out use these bullets in their 300 mag yet? I bought 100 to try out but haven't gotten around to loading any yet. I did notice they're long as hell, about 10 thou. longer than the 230 Hybrids. I also noticed they look like they've been tipped at the factory. They recommend 1:8-9 twist but I'm gonna give em a shot in my 1:10. 230 Hybrids are $ in my mag so we'll see. If anyone has tried these please let me know what you thought. Thanks
 

BurnOut

DDOJSIOC
Nov 24, 2013
1,092
155
63
Dallas
#2
Definitely keep us in the loop... I have been running the 230 gr Bergers and been really impressed, but like you, I have a 10-twist barrel, so I'm curious to see how the Sierras perform.
 
Feb 16, 2017
225
12
18
North Bay Area
#5
I did try them in my 28" 1:10 twist .300 wm. My rifle will shoot the 230 Hybrids just fine. Accuracy and speed is really good. I was worried at first about that bullet and the twist rate but I've had no issues. However when I tried the 230 SMK, they were all over the place. Accuracy was shit! Like 4" at 100 and worse at 300. I tried a bunch of different loads and seating depths but I just couldn't get them to shoot. The twist has to equate to the problem. That's all I could come up with. I'm have a 1:9" twist barrel spun up for my mag and when that's done I might try em again. I'm sure someone could get em to work, it just wasn't me. They are long, about .210" longer than the 230 Hybrid. I can get numbers later today, cause I'm at work now, and try to post them up