400+yards on paper with .22 Impact

Last year I had a goal for shooting consistent sub MOA groups at 300 yards and shared some of that adventure here on AGN.

I joined our local range so that I could take advantage of shooting off a rock solid bench and have better wind conditions vs the mountain conditions and my portable bench I'd been used too. 

It worked out well for me and I was able to return to the range earlier this year and picked up where I left off. I shot 10 groups of 5 and had only 3 out of the 50 shots blown out of MOA. Mission accomplished.

The next thing I wanted was a sub MOA group at 400 yards to hang next to my work bench. Unfortunately that meant going back up to mountains and using my less than rock solid portable bench. 

I did find a much better location than shooting across the drainage I used before at 400+. I knew it would be possible at the new location but still be extremely difficult with a 28 grain slug covering that much distance. So I did a quick session one evening with plans of returning early the next day to get to the serious work.

Long story short is I got my group and discovered I've gotten my Impact to be about as consistent MOA as the conditions will allow, well past 400 yards. Tested week after week for a couple months now.

Screenshot_20210801-132302_Gallery.1627858343.jpg


Screenshot_20210801-125804_Gallery.1627858373.jpg


20210511_175625.1627858555.jpg


20210502_065352.1627858611.jpg


Of course Shoot and See's can be manipulated so I knew that wouldn't fly.

20210801_125012.1627863680.jpg
20210801_125005.1627863704.jpg




20210801_124947.1627859170.jpg
20210801_124923.1627859171.jpg
20210801_124916.1627859172.jpg


This one doesn't count because its only 4 shots. Lost count.
20210801_124941.1627859340.jpg


And some non cherry picked but under good conditions. Of course there are plenty of shotgun patterns as the winds kick in like on the left (or worse), but those aren't as fun to look at.



20210522_065540.1627860075.jpg


Some "score" shooting.
20210511_175315.1627862047.jpg
Dropped another 5 in there just cause.
20210508_074522.1627862227.jpg
I've read that rimfire still holds the crown at close range 50/100 yard stuff but I can not find anything where any rimfires are doing this at ELR. Maybe I missed something?




 
@swish 

I've read that rimfire still holds the crown at close range 50/100 yard stuff but I can not find anything where any rimfires are doing this at ELR. Maybe I missed something?

———————————————————

Super impressive shooting and consistency from your Impact and your ammo! As far as .22 LR there are many clubs across the country stretching out to 300+ yards, but I haven’t seen over 400. At the recent NRL-22 Nationals they had one stage with gongs out to 350 yards. Look at the NRL-22X competition format. These longer shots are usually taken prone supported...
 
Great shooting. At what point do you have to either install higher scope mounts or add shims to do this? I have never even tried to shoot that far.




Im curious on what @Swish is using as well. Cheapest way is adjustable rings. 


as far as at what point one would need additional elevation is a fairly easy calculation. Most scopes in 30mm tube configuration have less than 20 MRad or 60MOA. Keep in mind that’s total and most people would zero at or near optics center which reduces the elevation down to half, this is where 20MOA rail or mount comes in handy but at best you can still only get about 50MOA or 13MRAD. You can zero out further but still not going to make too big of a difference after 50 yards. 



Even with high BC slugs shooting @1000 FPS 400 yards still need almost 100 MOA or just under 30MRad. Same everything at 200 yards will need 9.5 MRad or 32 MOA which is probably limit of most scopes even with 20 MOA rail and might still need to hold over a little. These numbers increase quickly as speed lowers or BC of the slugs lower. With adjustable rings one can get easy 40+ mils of elevation so you can zero near top of your adjustment range but keep in mind optical quality might decline depending on the scope. If you upgrade to 35mm tube scopes then some might have up to 120 MOA or 30 MRad of internal elevation. Even with expensive ELR scopes 400 yards is near the edge of limit, props to OP on great shooting and setup.