Thread: 22lr Resizing/Hollow Pointing Tool

I did a little accuracy testing at 25y the other night.
The group sizes are outside measurement. All shot from a heavily modified Kriss DMK off bipod and rear bag. I dialed by scope down 1 Mrad to preserve my aim point while shooting large groups.



The gecko ammo I have 2 cases of has 2 distinctly different projectiles. One is darker, narrower with a finer nose and the other is a lighter color with a larger nose and more consistent diameter. The dark one is what I am having the most trouble with and is the one which varies widely in diameter.
I started with control groups of unmodified factory ammo, then shot a group of plain flat tip (the smallest flat I could do and still have the projectile size up correctly) and a group of the EPS tip (this is what I'm calling the Eley style flat nose with a tit)
I started with 20rd groups but was running out of time, so switched to 10rd groups for the second type of ammo.
I also ran some hollow points through but was shooting a semi and they weren't feeding correctly so a couple got munched. Same thing happened with the Type 2 EPS. Both of these had multiple damaged rounds fired into the group, so I would basically exclude them.
I shot a comparison group with CCI and this was coming off a barrel well fouled with different lube. If I ran a bore snake through and fired 20rds of CCI before shooting the group, basically all the horizontal would be gone from that group.
Long story short, there isn't the night and day difference I was hoping for with the darker projectiles, but there is a measurable improvement. I will play around with different driving band sizes and see if that changes anything. I am going out on Monday for some load development on other rifles and will take my bolt gun to test some hollow points at distance to see if they hold accuracy and whether it effects BC a measurable amount.