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Post by browning204 on May 8, 2006 13:25:05 GMT
hey, My AR has a twist of 1 - 9 (i think)
with that twist should I be shooting heavier bullets to get the accuracy?
I have been using 55 grain ball ammo on paper, and at 50 yards it is ok, they would all be kill hits.
at 75 yards it gets a little less accurate.
I know the ammo is probably not the best and I still need more practice with the sighting system, but I got some federal 55 grain hunting ammo to use in the woods, should I go heavier for better accuracy??? any input would be great!!!!
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Post by b4rifle on May 9, 2006 11:37:07 GMT
the 1 in 9 twist is the standard for 16in or 14.5in barrels. It was designed to fire heavier bullets(62gr), but should toss the 55 gr. bullets fine. At the ranges you are shooting, it would be hard to see the changes in different bullet weights. This will not be real noticeable until you get out to about 300m. If you stay in the 100-200 yd range the 55 gr will work fine, if the rifle likes it.
How is the rifle grouping? What are the group sizes and what are your expectations?
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Post by browning204 on May 9, 2006 13:02:01 GMT
when I shot it, I didn't measure my groups. I just shot 3 shot groups and adjusted the sight as needed. @ 50 yards i was pretty happy with a tight group touching the bulls eye. (no magnification) but at 75 yards, the groups spread out. all kill shots but a good difference in grouping. as I said, I need to get used to that sight a little more. (no magnification)
The Rifle is gonna be my "thick stuff" rifle and will be happy with 50-75 yards.
A buddy of mine told me to go with heavier bullets so I thought I would ask....
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Post by b4rifle on May 9, 2006 14:07:10 GMT
The coyotes can't tell if they are hit by a 55 gr or a 77 gr bullet.
The heavier bullets will have a better ballistic coefficient. But if you are shooting under 200 yds you would not know the difference.
The best you could ask for with that rifle is 1.5 - 2 in groups at 100 yds. That is with no shooter error. You have the right idea, if you can keep every round in the kill zone with in the limitations that you set on range it will be fine. Just practice with it as much as you can, that will make the difference.
The aimpoint is a tricky sight to get use to on a rifle. When you are zeroing it you have to have perfect mechanics and technique. Once it is zeroed you will be good to go. The site has zero parallax past 50 meters. So as long as you have a good zero and the dot is on the target when you squeeze the trigger you will hit the target.
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Post by browning204 on May 9, 2006 16:22:18 GMT
ok b4, thanks for the awesome info again.
I plan on shooting it alot! then I will start asking questions about changing barrels for different calibers..
that is something that I would like to look into in the future!!!
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