05-10-2015, 06:45 PM
MountainCur Wrote:So here I am thinking this Grendel is the baddest thing to hit my world since invading Iraq. I was wrong. I can not find a load to save my life. I have tried 6 different powders and 3 different bullets. I have gone through this machine thoroughly trying to find if there is some little thing preventing it from producing a repeatable group. I have switch scopes, breaks, and even tried no break. I can get a group(3/4 to an inch at best), always with a flier, though. I run back in the house re-zero my scale produce more test loads go back out and I have a 3-4" group. I've called gunsmiths and respected competitors looking for advice and I have scoured the internet for some inkling on what the hell I'm doing wrong. I have found, possibly, I got Saturned.
It is an 18" 1-8.75 twist stainless Saturn barrel. It seems they have a reputation for f'ing up grendels. My major problem now is I have a competition this next weekend. I was planning on using this Grendel for it. This comp has 3 parts. A tactical with regular carbines (I have that covered), a static LR course out to 1200 (I have that covered with my custom bolt rifle), and a dynamic LR course where you and your partner go out ! with a bolt rifle and the other with an semiauto (this is where the Grendel was going to come into play).
Yesterday I tried my wife's Mark 12 out to 8 and 900 and on my smaller steel targets it couldn't maintain. Its great to six, but it seems no further.
I need help. I can over night a brownell's 24" Grendel barrel and work my butt off to get it ready for this coming weekend or chance the Mark 12 or my buddies rack grade m1a, which shot a 3 inch group of m118 ammo at a hundred and as soon as it got warm it started wondering.
I'm out of options and quickly running out of time. Any useful advice would help.
Mountain,
We really need more info about your loads you've tried (powders, bullets and charge)?
pds