Just some initial testing. VERY cloudy day, so no chronograph readings.

These loads are for a 223 Ackley Improved chamber - do NOT try these loads in your 223!!!!!!!!

Using a 53 gr HP flat base Hornady Match bullet (never shot in this barrel previously), CCI450's, & Lapua brass previously fireformed.

Top left - 8 shots of H4895 0.1 grain increase of powder per shot 27.1 to 27.8 Previously chronographed loads in this barrel put the speeds in the 3600+ area.

Top middle and right - 5 shots each target of Benchmark. The node for Benchmark tends to be in the 27.4 to 27.7 area in all of my barrels. Previously chronographed loads in this barrel put the speeds in the 3600+ area.

Bottom left and middle - beginning loads of XBR8208. As you can tell by the POA (point of aim), the beginning loads for XBR8208 is slow in comparison, but is definitely coming up as the powder charge increases.

Bottom right - this is a fireform load I use. Very good accuracy when fireforming brass!!

Next time out, I will shoot the loads over the chronograph to collect the data.

[img width=600 height=450]http://img.photobucket.com/albums/v245/dcloco/223aiBull.jpg[/img]