75 grn Amax in a 1-9 .223?

X

Xs24-7

CGN Regular
Rating - 100%
71   0   0
Anyone running 75 grn Amax in a 1-9 twist .223? Just bought a 700 Tactical and am hoping these will shoot, but dont want to waste my time with them if the twist isnt fast enough.
 
Hornady suggests they may not. Having said that, it's a trial and error kind of thing too. Your rifle may not care for them. With the shorter 20" barrel, you may not generate enough velocity to properly stabilize the bullet. Power & primer choice will need to be optimal to achieve the highest velocity possible from that length of barrel.
 
I tried some in my Rem700 Tac 20" 1/9, with horrid results. 5 rounds at 100yd and I missed the target 4 times and keyholed the paper once. When I measured the twist, it was closer to 9.25

I know you're hoping for a better answer but that was my result. That was from 2 years ago and I still have 90 bullets. I made a few key chains. ;)

I'm not saying they won't work, but I saw what I saw and gave up. I used 60gr Noslers for a while, until I found Berger 70gr VLDs.
 
With a 75gr Amax in a ruger77 with 1:9 twist I was able to hit a target at 691 meters. Up 22.5 MOA, but i hit it repeatedly.

22.5 grains of H4895. 6 shot average velocity of 2658 fps.

the only thing to consider is that the round cannot be loaded to magazine length, so you'll have to run it single shot. (maybe some guys do, but the hornady book says not).

there is a 75gr BTHP that should be able to stretch out far too, and it can be loaded to mag length, but i haven't played with it yet.
 
I've had 75 gr AMAXs loaded up for me for my Rem700P with disastrous results. Tons of vertical stringing and many misses. We then switched to 69 gr something (I can't really remember, as I said I had them loaded for me) and it seemed to work pretty well.
 
I just tried some through my RA XCR (1:9 twist) and they showed great potential - about 1 MOA at 100 m. Mind you, that was only 1 - 5 shot group so not a very extensive test, but everything 55gr I've tried has been 2 - 4 MOA. Next best was MFS 62gr. SP at about 1.5 - 2 MOA so I was concluding heavier was better in this gun. Now the responses to this post have me confused. I thought faster twist was better with heavier/longer bullets... :confused:
 
The Baron said:
I just tried some through my RA XCR (1:9 twist) and they showed great potential - about 1 MOA at 100 m. Mind you, that was only 1 - 5 shot group so not a very extensive test, but everything 55gr I've tried has been 2 - 4 MOA. Next best was MFS 62gr. SP at about 1.5 - 2 MOA so I was concluding heavier was better in this gun. Now the responses to this post have me confused. I thought faster twist was better with heavier/longer bullets... :confused:
Click to expand...

faster is better for long bullets, 1 in 9 is middle of the road for twist in .223 some are as slow as 1 in 14 and some are as fast as 1 in 7 or 1 in 6.5 for 80 and 90 grain bullets

i think the fastest factory barrels are 1 in 7, someone correct me if im wrong
 
I have been using that combination in my Sportco with a Gaillard barrel for a few years. The results were always average, but I found if you drive them hard, they are a lot better. I am currently using 25.8 grains of Varget. This is a single shot rifle, so the the rounds are fairly long, and the barrel will also be longer than your Remington 700.
 
Amaxs are long...run them hard. Get them above 2850 and nestled closely to the lands and theyll treat you like gold.

My 22" barreled 9 twist Kimber Montana zings them around 3000 fps with RE15 and kissing the lands these will go SUB 3/4 MOA easily. I can land 25 in a row into a 12" circle at 450 yards. Have seen them print 4-6" 3 and 5 round groups at that distance too but am too lazy to walk up and snap pics.

I had them keyhole in my rifle until they got above the 2850 fps mark. Also a good pill to try is the 75 BTHP from Hornady. Theyre much shorter than 75 Amaxs and Ill bet my rifle that yours will spin them just fine!
 
Had a 9 twist 700 XCR Compact Tactical that wouldn't shoot them, my current 223 - a 9 twist Savage shoots them well
 
I think you'll find that if it's really hot/humid, or your at higher elevation they may do ok. 69 SMKs are about as heavy/long as i'd go with a 1 in 9 twist. If your from anywhere east of the Rocky Mtns you can't trust the results of those folks who shoot at higher elevations.
 
My Stevens 200 with its factory 22 inch 9 twist barrel, rechambered by Bill Leeper to 223 Ackley, does very well with the 75gr AMax, with three inch groups at three hundred yards.

I realize that is not what you guys consider precision, but they are very tough on coyotes, and passable on wolves.

Ted
 
You must log in or register to reply here.
Back
Top Bottom