Home Forums Reloading Varmint Rifles 223 remington twist rates

At least chuckling and shaking their head...

Badass. Thanks.

IO, you ever fool with TAC/75amax/223ai? Just getting started with the AI and wonder if I'm on the right track.

True, but you didn't even have the grace to post a 10 mph wind......

The secant ogive, a throating contradiction, partly truth and partly fiction....

Nah, but I'm sure you can do it "gracefully" We were, after all, talking "flatter".

Not IO, don't even pretend to be, but this is my results.

In my 22 1/2", 8 twist rifle using WW brass, CCI400's and sans moly I got the following:

25.5 = 2970 fps
26.0 = 3020 fps and stupid small groups, as in 0.35" or so at 100 yards.
26.5 = 3090 fps but groups were a bit larger and pressures had to be getting up.

With the 26.0 grain load, primer pockets lasted forever so I called it load complete. That load, in your rifle, may of course blow your ass up so be sure to work up.

With the 50 I prefer H335, but with the 75 TAC wins. RL15 and H335 are good, but I got more consistent velocities with TAC.

Wow. I really need a chrony. The ramshot guys gave me 23.9 max for the ai.

Would you go with an 8" on a .22/250 re-barrel also?

Yup and go AI...
Rem 700 action squared and lugs lapped
24" Douglas chrome moly 1:8 barrel fluted Rem Mag contour
Matte Blued along with receiver
Trigger already adjusted by me
LVSF gray web tactical stock

Depends. What bullet weights do you want to be able to shoot? It you want the ability to go heavier, then yes. If the heaviest you will ever want to go is a 50 or 55, then a 12 is fine.

Truth is, there's no down side to the 8 twist though.

FF loads with 50gr V-max, no down side to 1:8 is correct...

I would not dream of building a centerfire .22 with a twist not capable of spinning the 75's. The 1-8" is just too flexible.

It's true, you don't buy long bullets to stop at 500. But I wonder about those numbers. The Pact Pro has a ballistic program built in. Running the two identically and changing only BC and velocity, mine come out very different.

6500', 80* temp, 225 zero, etc.....
Drop......
-----503825(223AI)...503640(.223)....753150
225 Zero..........................................................
300..... -3.2........................-3.6....................-4.2
400...... -11.3.....................-12.8..................-14.3
500...... -24.8..................... -27.9.................-30.0
600...... -44.9..................... -50.7.................-52.0
700...... -73.5......................-83.0.................-81.4

Those .223 case velocities aren't jacked up, they're accuracy, everyday loads through a Shilen/223 and a Schneider/223AI, both 14twist.....IMI brass, AA2015 and VV133 powder.

The 223AI chamber has 0 freebore, 1.765" long - .010" past case length, .250"nk.
I don't normally pay attention to COAL, but with 50VMax seated to lands it's 2.262" overall. You have quite a bit of freebore, shooting longer bullets you need it.

A 60VMax is .120" past the neck/shoulder and down into the case. I've no 75's and don't know how far down they'd seat. These guns usually shoot either TNT's or BlitzKings, mostly BK's. Depends on what the targets will be. The BK/BT/Vmax have better BC. At the lands a TNT seats only .110" into the neck, a BK goes about 2/3 way down.....that's with no freebore. Add freebore to get a 60VMax all the way up into the neck and the TNT wouldn't come close to finding any lands. The BK would be way out there. Long freebore with 40's there'd be no hope and going 4100-4200 those things shoot real flat.

Those numbers up there are drop only. I've never said lighter bullets are for longer distances or that they handle the wind as well.....I don't care to shoot varmints at even 500yds with a 223 cased round. I'm just questioning your numbers. And as I said before, people shoot what they want it doesn't matter. There's no one right way, even though some like to make everything into a mine's-better-than-yours-I'm-smarter-than-you pissing match.

And I'm not one of them, there's room for everybody's pet theories and toys in this game.

Those numbers came from the online JBM program, at 0 degrees and 0 sea level. Our altitudes and ambient temps are very different; except for one sheep I don't think I have ever hunted at 80 degrees.

I've wondered about that too. Maybe it's someone creating a false superiority complex to hide self hate or a miserable existence, maybe it's drugs or booze, maybe all of them, doesn't matter. As website owner or advertiser I wouldn't like some bigmouth a-hole posting 30 times/day, more than 31,000 times, monopolizing every thread, boasting how smart he is and how wrong/stupid people are who don't do as he does. You gotta wonder about someone like that.

I know you're not, and I wasn't referring to you.....it was about how so many threads wind up.



With 223-cased rounds we mostly shoot small critters and like to see them blow up.

Dummy,

At the 400yd line,the 75 already has the retained velocity advantage(from muzzle velocities: 3150 75's/3750 50's) and nearly 50% of the drift...as well as 50% more "energy"(1033 ft lbs vs. 685). The 75's terminal affects are already SMOKING the 50's,well inside 400 and it of course gets very ugly from there. In fact,the 400yd 75's WHACK,exceeds the 50's at 200 and by quite a margin.

Now I realize you are too stupid and in well over your head from start to finish,all the while busy making schit up at the same time,but them is FACTS.

They do nice things on Critters too and rest assured that ain't a guess either.................

IO, what powder do you like for the 223ai/75amax?

Yeah yeah. More from Often Irritated. More about you being so smart, blah blah. Guess I'm too dumm to know what the schit is that you say I'm making up. But not dumm enough to think it takes 1033ft lbs to kill a 2lb rodent.....and you're not quite smart enough to know that 685ft lbs will blow the crap out of it. Them is facts. So who's the dummy.

Your math's not quite there either.......50/3825 and 75/3150..... 400yd drift 50=12.5", 75=8.5.....that 4" for the 50 is 50% more....and 8.5 is 2/3 of 12.5. My 10yr old grandson knows that stuff but it's over your head. You're a joke.

Me bein' so dumm and all, maybe I should start imitating you. Yeah, grow a silly 70's style fu manchu mustache and be really cool. Then park myself on a forum and post 30 times a day. Tell people they're stupid. When the total reaches 31,000 or so, start being an ass under a different name. Imitate you.

Again.....doesn't matter what you shoot. Doesn't matter what anyone shoots. Knock off your adolescent bs.

Dummy,

It's "dumb" not dumm,though you're at the mercy of your IQ and that glaring lapse crosses over well into your 223AI "experience" and "knowledge".

Feel free to elaborate(as only can),in how increased impact velocity and rotational velocity,becomes a terminal "disadvantage". What is well beyond obvious,is that you've never seen or shot a single 75A-Max. To frost that cake nicely,you thoroughly botched all things pertaining the chambering proper and that from stem to stern. Pretty impressive that COAL,throating,speed,ballistics,the effects of twist and all else you've contrived in the darkened shadows of your empty brain,were poignantly amiss.

I know 50gr V-Max comeups a whole bunch better than exceptionally well and needn't guess,as you are forced to. All ears on how 8.5 divided by two(50%) isn't 4.25"...which is rather akin to 4"?!!? 4"+8.5" has been known to equal 12.5"...I now know where your grandson gets his "special" mathematical gift and the lineage is none too flattering.

Now you've got me wondering,how many of your eyes are crossed?.....................