Thread: Best/simplest alternative to a ladder chart?

Now MD that's very uncharitable to take my shooting to task. I'd already covered this and previously shot two 5 shotters with my K Hornet of 0.6 and 0.4 - with the same target and a 7x scope. It wasn't the shooting, go teach your granny how to suck eggs.

However I do agree it's not too good, the rifle was shooting nearly MOA 5 shot groups with cheap factory ammo like PMC/ Fiocchi 55s, but blew out over to 2 MOA when I tried Federal GMM 69s. It was "patchy with my usually very trust Lapua ammo, it's had the FMJ pulled and replaced with Hornady SPs. Hmmm. It's had a good deep clean and didn't show excessive coppering. Rings etc have been checked.

What I think is happening here is a new barrel still seasoning, combined with bulk projectiles. I'd just opened a new bag and just now on a thought provoked by @Kiwi-Hunter I went and weighted some - 4 out of 10 with nearly a grain of weight range. So I'll reshoot the test with decent projectiles and look at going a bit "snottier" - GRT estimates I'm still well under max pressures for the velocities I'm measuring.

As I mentioned I don't want to thread hijack but often we can learn more from a problem rifle than an easy one and this rifle will show every weakness of relying on 3 shot groups!