Thread: The “you can’t go wrong” .223 load

Originally Posted by omark

The fact you can still neck size them is not an indication. That load is way over maximum.

No, it's one grain over maximum, and in my rifle it gets less pressure than the book max does. I have a good chronograph and consider such things. Some people act as if book maximums are like a brick wall, but they are many variables and are more like saying what a collective safe driving speed is.

The 70g load is half a grain over, and same situation.

You aren't getting less pressure than book max. Book max will be within the SAAMI limit of 55,000psi. But the CIP limit for 223 is 62,000psi which you are just within according to GRT.

Thats a cool program. I do it with my chronograph - I get less velocity for the same loads with that powder in that rifle than the reloading guide does.

I'm responding to this statement:

it's one grain over maximum, and in my rifle it gets less pressure than the book max does.

You're saying that 28.5gr in your rifle is giving you less pressure than 27.5gr gives in ADI's test rifle. I'm telling you that that is not the case after inputting your chrono readings into GRT.

I'm not saying it's unsafe nor am I suggesting you stop. I ran some pretty damn spicy loads in my 223 too. Just making sure you are aware.

sure, just talking pressure: If I am getting less velocity then ADI, then how could it be otherwise? (Ignoring your program for a second)

For example if my rifle has a bigger jump to the rifling than theirs I will be getting less velocity (less pressure) regardless of the same loads. This will not be predicted by the program.

You have 4" less barrel than ADI.

If I up your barrel length to 24", it suggests your load would be giving you 3450fps.

Yes I remember working it out taking the barrel length into account. Their max was 3380fps supposedly with a grain less. I was happy with 3300fps in a shorter barrel.

I take your point though, when you work it through there is not going to be much in it

3384

Just changed it.

You guys are going to hate the way I load the 7mm Mauser

No, ADI got 3384fps with 27.5gr from a 24 inch barrel, not 3480fps.

Speed and pressure go hand in hand. You are getting more speed than ADI would have gotten if they had been using a barrel as short as yours. And you would be getting more speed than ADI if your barrel was as long as theirs. Therefore it's pretty obvious that your pressures are higher too.

Look, I hereby retract that statement, which I made in a carefree happy moment, and which I now regret.


(I forgot I had a shorter barrel to be honest, it was a couple of years ago I did it)

Ugh. Would be great if you could stop editing all your comments.

I have time to kill. Want me to run the numbers on your 7mm so we can see how silly your load for that is?

Originally Posted by BillyDixon

Just changed it.

You guys are going to hate the way I load the 7mm Mauser

presumably you put powder in through the top then a bullet after that, to keep it in

I have to get what I want to say right!

You will hate the 7mm loads, but, they all have vastly different throats, so there is great variety in results of the same loads. But try:

50 grains H4350 and a 139 grain interlock for 2925 fps (24 inch barrel) This is a modern rifle though, not a rolling block...

Originally Posted by gimp

presumably you put powder in through the top then a bullet after that, to keep it in

You are stealing my methods?