Shot some iron-sighted (front tunnel) 50m groups with a variety of powders, starting with a Trail Boss control group. As much as I'd like to claim it, this 3-shot flouling/warmup group is not indicative of long-string, hot-barrel accuracy:
- 50m cold clean barrel
- tb_01.jpg (423.69 KiB) Viewed 1721 times
Adjusted my sights: no denying it likes TB loads - as you can see, this group would have been much tighter had it not have been for that pesky flyer.
- 50m
- tb_02.jpg (514.48 KiB) Viewed 1721 times
Then I moved on to some AR2205. 2205 didn't shoot as well as TB or AP70N.
- 50m
- 05_01.jpg (542.82 KiB) Viewed 1721 times
This is actually a 5-shot group - one of the shots is completely high and off the paper...
- 50m
- 05_02.jpg (523.62 KiB) Viewed 1721 times
Not very impressive...
- 50m
- 05_03.jpg (512.71 KiB) Viewed 1721 times
Then on to some promising AP70N loads; I could tell right away AP70N was shooting better than the AR2205...
- 50m
- AP_01.jpg (490.7 KiB) Viewed 1721 times
Best load of the day, a tad over 2moa - superb stabilization, negligible recoil. This will be my PC silhouette load.
- 50m, 2.2moa!
- AP_02.jpg (483.72 KiB) Viewed 1721 times
4.0gr opened up a little. In case you were wondering I adjust my sights a whisker to account for the hotter load.
- 50m, sights down a bit
- AP_03.jpg (527.17 KiB) Viewed 1721 times
In summary, I'm happy AP70N shoots better than the AR2205 for two main reasons 1)it's more economical than AR2205 2)it's cleaner that AR2205 (which is advantageous in a 92 action)