Load development of the AI I have in classifieds.

[JamesnTN]

Here is some load development I done today with this rifle, the loads are listed along with chrono data.
I shot these using the mounted bipod and a rear bag, I'm a benchrest shooter so getting aquatinted with how a bipod handles is an all new experience.

This was the last group in the series, four shots went into one large hole and damn I pulled the fifth shot, so I loaded up another of the same charge and stacked it into the original group of four. Measurements are there for five and six shots, all in all five five shot groups under a half inch not too shabby for an old man off a bipod and virgin brass.

 

[JamesnTN]

Got back out today and played with different die bushing for neck sizing. The load is 42 grns IMR 4064 using Lapua case Fed 210m primers bushings are 335 TL 334 TR and 333 both bottom L and R as folks see with same load and just a difference in neck tension what difference it makes. I know these are 3 shot groups this time but if one knows what look for 3 shots tells much more than 5 for these tests. The bushing I will use is the 334 because.... the triangular group this is what one looks for when load development. If you have a load string horizontal or vertical as using bushing 333 you will not get rid of this and it shows its ugly face further out. I will now change powder charge and fine tune the load using the 334 bushing. I'm guessing 42.2-42.4 grns will be the key load.