Drop at 200 yards?

krashmania said:

Say I wanted to shoot for giggles at 200 yards with my bulk ammo, cci blazer, but wouldn't have much time to sight in on the 200 yard linr, but much more on a 50. With a 16" barreled mark ii fv-sr, what kind of hold-over would you say for that kind of drop? The scope happens to have mil-dot, if you can use that as a guide. I'll try and post pics of the results...

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damifinowfish said:

You also need to add in the barrel.
A plain jane .22 barrel my not be constant enough to even get close to your target at that distance with bulk ammo.
I have seen several people constantly hit a 6 inch steel target at 200yrds but they all were using heavy barreled .22s and match grade ammo...

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E.Shell said:

I use a 50 yard zero for my match grade 14" 10/22 (20" barrel -6" of suppressor guts) and shoot beyond 300 with it.

At 200 yards, drop with 40 grain sub-sonic (match grade ammo IS subsonic) is about 26 MOA.

26 MOA at 200 is about 55", so you would hold 4-1/2 feet above your desired impact point.

26 MOA is also about 7.4 mils. If you have a mildot scope with a normally configured mildot reticle, you only have 5 mils below your main crosshair intersection. This means you cannot directly hold for this amount of drop.

If you are zeroed for 50 and can only shoot at 50 and jump to 200, you can dial up the 26 minutes and see a change in impact point at the 50 yard target equivalent to about 13" or so.
Very true. Most .22s will deliver good accuracy if they are properly fed, but unless the barrel has potential, long range results will be disappointing.

Match ammo is a necessity for long range accuracy with a .22. Don't be fooled by the high velocities and reduced drop advertised for the hi-speed and hyper velocity ammo, the trade off is precision. Without precision, drop is completely unimportant.

There are two issues with the high speed ammo when compared to good, accurate ammo:

1) it is loaded for velocity (energy and expansion), NOT accuracy.

2) .22 rimfire bullets are extremely sensitive to the turbulence associated with passing through the transonic velocity zone as they decelerate on the way to the target. Match ammo is held to sub-sonic levels, so it starts out below the speed of sound, stays there, and never experiences this turbulence.

As quickly as .22 rimfire bullets lose speed to drag, the higher speeds are often wasted. Another thing not obvious is that the lighter bullets have a reduced ballistic coefficient, so any initial gains usually equal out by the time the bullet has gone a couple hundred yards.

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krashmania said:

Alright, so probably not very reasonable to zero at 50 then. What would it be like if I zero'd at 100 yards then? And the barrel is heavy, if that helps. I dont plan to shoot for precision frequently, this is just something I'd like to try tomorrow if the range is dead, like it was last time I shot.

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Half-cocked said:

I can't add much useful info beyond Ed's info, but when I was regularly shooting at 100 yards for the fun of it, I counted the number of clicks it took to move back to a 25-yard zero after zeroing at 100. I wrote this down and stuffed the note inside my scope cap (along with the ammo type so I wouldn't forget). At the end of day, I would re-zero at 25. So the next time out, if I wanted to shoot at 100, I'd just move the scope the pre-determined # of clicks and I'd be right there (more or less).

For me, this was a lot easier and more accurate than holding over by a certain amount, etc.

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