Thread: Rifle Double Grouping

Well, just got back from the range.
Had a go shooting from sandbags instead of the bipod. All shots fired at 100m.
Straight away the groups were very tight. Fired a few factory rounds to see what was happening then switched to my reloads.
Definately the stock which caused my original double grouping problems. Obviously too much flex when using a bipod causing pressure on the barrel etc
With shooting from sandbags this time, it has reinforced the need to throw the Hogue stock away and fit a much better stock.

Had to do a ladder test as I'm just working out the loads for the rifle now. Using 140g Nosler BT and ADI AR2208 powder. Seated the pills a bit further out (2.90") which is just Ok for feeding from the mag.
Started at min load (39.5g) and worked up to 42.0g which was just below max load (42.2g).

Fired 3 shot groups apart from a couple of 4 shot groups (just because I loaded up a couple of spares). Left the barrel to cool down in between groups.
No pressure signs at all, but the bolt was a bit firmer to open on last few rounds.
Very happy with the min load so far. Was the tightest of the groups. As the powder load increased so did the spacings.
Best was 39.5g and 40.0g so I might do some fine tuning around those loads.