Starline 458 SOCOM Brass Cases

Only one company makes 458 Socom brass, and I'm glad it's Starline. One note with the 458 Socom: Do NOT trim your brass until after at least one firing. One quirk of this chambering is the brass shrinks the more you fire it.

I have three different brands of brass now, other than Starline. This brass actually weights just a little more than the average, and it lasts longer! I get 2 or 3 loads before I have to trim or otherwise reshape the brass. The starline came to me a little long in my opinion, so I trimmed to my spec. 5 loads now on my first hundred brass and not one has stretched or changed shape requiring full length sizing. Amazing! I am not that experienced with a lot of calibers, I only load .223/5.56, .308, 7.62x39, .458 SOCOM, and 30-30 in rifle. I am moving completely over to starline brass! It just lasts longer!