AA 28" GSR performance question

[BjornF16]

Does anyone have the AA 28" GSR (5S fluted)?

I'm looking for feedback on performance...

[bwaites]

In a word: Awesome.

Here's one of the groups I shot in the first 50 rounds through it. 107 SMK over XBR 8208, 5 shot group is right at .21"



All the groups from that load were sub .50"

[BjornF16]

When did you get your rig? I'm wondering if there is a different supplier now or if they still have some of those in stock...

How much improvement in velocity over 24" barrel?

[bwaites]

I've had it since April last year.

Barrel supplier has changed, but the new barrels are every bit as good, with QC probably even better than before. The 28" barrels aren't a high demand item, so I'm not sure exactly which will be supplied at this point. I can promise that they will shoot though! Bill Alexander recognizes that anyone ordering that long cut barrel has one specific object in mind, long range accuracy, so I suspect that those barrels probably get extra scrutinization,

Velocity depends on bullet and load, but with factory Hornady, (which shoots crazy good for factory ammo) I picked up a little more than 100 FPS over expected 24" velocity. I shot 5X at 1000 yards in some wind with mine, at an F Class match, the first time I ever shot it past 600 yards.