Originally Posted by Ackman
Originally Posted by RickF
I don't always agree with IO's delivery, but he knows exactly what he's talking about here.

The throat required for a 75 A-Max vs a shorter bullet? Here's a thousand words with the 75 A-Max and the 50 V-Max seated to touch in my rifle. The mag box may require massaging to run a 75, but not the throat.

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As far as long range trajectory, go back and read what IO said again.

In my 1-8 twist 223AI, I get 3050 with the 75 A-Max and 3600+ with the 50 V-Max. Want an education? Run those numbers in your trajectory program and see which one shoots flatter.

And frangibility of the 75 A-Max? You have to see it to believe it, it will seriously mess stuff up.


My .22's all have 0 freebore. In the .223/.223AI case....... a 50VMax seated just kissing the lands is one boattail length below the neck/shoulder junction. I don't use 75's, but I'd guess in that chamber one of those bullets would be seated pretty well down into the case.

You said to run the trajectory numbers and see which shoots flatter, so I did. In my .223, velocity is 3640 with a 50....velocity in the .223AI is 3825. Trajectory under conditions where I shoot.....6500', 80*F, with 225yd zero......the 75 drops -4.6300, -15.4400, -32.3500.......the 50 from a 223AI drops -3.2300, -11.3400, and -24.8500. At 700yds the 50 has 14" less drop. Wind drift is a different thing, but you said "flatter."

I'm not saying 50's are a good bullet for targets at 700yds, or even good for 500yd targets. And arguing about what bullet to shoot is pretty silly. People should use whatever they want. Doesn't matter to me, shouldn't matter to anyone.



3825fps with a 223AI,is a 50gr PIPE Dream...though I like my 75's at 3150fps...............