100grain .223 ammo?

Savage with a 1 in 9 twist I shoot just is unbelievable with 69 gr Sierras.Coyotes or Wolves handled out at 300 yards. 100 grains are much too heavy for anything less than 1 in 7.
 
I don't think there is any 100 grain .223 factory ammo available. This was something that was experimented with for military use a few years ago. The problems with it were that it was marginally stable out of a 1:7 rifled barrel and a high trajectory.
 
a 1 in 9" twist will not likely stablize a heavier bullet. In fact your rifle will probably shoot 55 grainers well enough... Having said that, you could try something a little heavier but I wouldn't expect any miracles.

I have a Tikka with 1 in 8" and while I've tried some heavier bullets up to 62 grains I found out quickly that they wouldn't group as well as I wanted them to group. Oddly, the winchester 55 grainers were so accurate I didn't search for anything else and still use them today.

I don't consider the 223 as a primary deer cartridge, but it could do the job if I really needed it to. However if you consider stepping up to a 243 in a 100 grainer, then you've got it made for deer and wolf.

The main issue with a lighter cartridge is getting one's shot in a vital place to bring down larger game. With a coyote, a 223 is more then adequate tho...
 
I shot 100 pound + kangaroos with a 223 and 55 gr Hornady soft points. Exit hole was the size of my fist. Range about 150 yards.

A 55 to 65 gr soft point in 223 would be accurate and do the job. 95% is shot placement.
 
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Up north when we used to snare wolves, the boys used .22lr to the head if they were found alive from about 25-50yds away with no problems. A 223 with standard 55-75gr will do just fine, all in shot placement in my opinion.

I now use my 7mm rem mag with 100gr hp's pushing 3400fps if I remember right. Does a heck of a job on wolf and coyote. Only reason I use this is I am pretty limited to my rifle options at this point. We use 223 at work all the time, but still wanting a personal one :) Soon hopefully
 
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I dont think the guys who use the heavy stuff use the 100s anymore if they ever did. Also the 88s and 90s I think most are using 1:6.5 twist rates, at least thats what my NRA high power build book says. I use 1:8 for Sierra 77s with good accuracy.
 
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