I'm thinking that the hand-chambered top round was opening up the groups, because each and every one had four pretty reasonably clustered rounds with a fifth shot hell and gone from the other four.
For instance, the first group of the 147gr FMJ, fired at the bottom right bull, had a cluster of four rounds in 3.6" just below the bull, and the fifth must have gone clear off the bottom of the paper.
And so it went for all the FMJ:
- four rounds into 5" with the fifth opening the group to 10.25"*
- four rounds into 3.5" with the fifth opening the group to 6"
- four rounds into 5.5" with the fifth opening the group to 6.5"
- four rounds into 5.6" with the fifth opening the group to 9.8"**
**This fifth group I shot freehand unsupported.
After the FMJ, I cracked open a container of the Duty/Carry ammo with its XTP JHP projectiles, and tried again, using the same method. There was still the fifth-round phenomenon, but not as pronounced.
- four rounds into 5.25" with the fifth opening the group to 8"
- four rounds into 4.4" with the fifth opening the group to 6.2"
- four rounds into 3.25" with the fifth opening the group to 3.8"
The first shot, unfortunately, is that one high and slightly right, not the one at six o'clock on the bull below the one I was aiming at. That one was cranked off toward the end of the string before I'd cleaned up my sight picture. I might have cussed some, because even with the first round being high-right, those four went into 2.2", which is about as good a freehand standing group as I've fired at 25 yards, and then I blew it.
|Boresight Solutions frame would look cool in an a-ha video.|