Grendel bolt indentification

[FLshooter]

You'll get more utility out of a $50 better barrel than GO/NO GO gauges.

The chances of the gun blowing up in your face, even with this caliber where there are two possible bolt face depths is remote. $50 of gun-money is a lot to some so spending that on a better quality barrel is money better spent.

It's a reasonable risk and you can always fire the first round of a new barrel/bolt from the hip. Then use calipers and Hornady .350" headspace gauge (or a .357 spent case) and measure case stretch.

Or as A5 is saying, buy from a reputable manufacturer.

$50 can buy some ammo.Not much of a barrel upgrade.But,it can buy you a top of the line eye patch!LOL!