Home Forums Reloading Big Game Rifles Load Data 280 Ackley

Gentlemen,
Not sure where I found this combination or who I heard it from but I am shooting 61 grains of H4350 (worked it up) in my 280 Ackley. It has a 24" barrel. I have not checked it with my Oehler and was wondering if anyone has experimented with this particular load and would share their findings.
I am thinking it isn't a load to shoot in temps over 60 degrees. Base of the brass looks clean and the bolt lifts easy and it is real accurate with this combination.
Headed to hunt Muley's next week and am running out of time and weather here in WV to setup and check it with the Oehler.

Thanks,
Dave

That load sound like you will be shooting the 140 grain class of bullets, and seems on the warm side to me. Like you mention, cool weather load!!

QL predicts just over 65K.

A quality rifle in good shape can handle 65K all day long.

Going off of memory, but I think I used to shoot 61.5 with 120's.

Just something to think about if you want to make your .280AI really perk.

MAGPRO!!!

I use RL 22 with both 140 and 160 gr bullets for sub MOA accuracy.

JD338

Second vote for RL22. With 140 TTSX and slight compression of powder, awesome velocity and accuracy

How much RL-22 are you fellas using for 140 grain bullets?

Also, what kind of velocities are you getting?

62 grs of R22 under the 140 TTSX for 3315 out of mine with superb accuracy. Book max so as always work up to it.

quote=j_elky]How much RL-22 are you fellas using for 140 grain bullets?

Also, what kind of velocities are you getting?

[/quote]

140NBT coated with hBN maxed at 65gr RL22 (best precision at 63)
140GMX/hBN maxed at 62.5 (best precision at 62)

Using R22 64 grains and 140 grain BT in Nosler brass and WLR primer at 3390 from 26" tube. Hart Barrel

I run 61.0 grains of H4350 and the 120 Nosler BT out of my .280AI. Its clocking around 3325 out of a 23 inch barrel.

Hillbilly
I checked them before I went out west and they are running 3275 out of my rifle. 24" tube. Did not take it with me but hunted with it here at home. Using the 120 grain TTSX it is way more than it takes to put a whitetail down and accomplished the deed easily.
I clocked it with my Oehler 35. Going to work with it and some 140 Bergers. Gotta seat them .150" back to get full caliber contact in the neck. If RE22 works like it sounds like it does a guy will have to give it a try for sure. Over 3300 as one of the previous posters has experienced with a 140 is awesome. I would be very impressed if my ULA will clock that fast. I cannot wait to run those numbers on my ballistics program!

Dave

Interesting...a 280AI juggernauting 140's at STW and Mashburn velocities;and from the same length barrel that Nosler says gives,at best,100 fps less velocity.

And people wonder why I think 280AI users are the biggest wishful thinkers on the planet,and greatest purveyors of dis-informatiion.

Any fool can keep adding a double based propellant like R22 until the chronograph screams,just to make a cartridge look good.

That's as humerous as quoting Quick Loads as evidence of pressure in your rifle....another joke of the uninitiated.

+1

Yet Bob you continually cite 7RM speeds not reached by any manual other than Nosler 6.

I know what I got with my 280ai by using published and pressure tested loads and they meet or exceed every 160 class load from Hodgdon among others.

As Shod pointed out in another thread some folks claim that loading a 280ai to SAAMI MAP is stomping on it but loading a 7rm past SAAMI MAP is fine.
Pressure matters and the 280ai operates at higher pressure.

My 280 Ack works it best with 160 gr bullets and Hod 4831SC

Do you have a better way than QL to estimate pressure available to you?
Didn't think so.

Do you have Pressure Trace?
Didn't think so, I do.

Have you ever owned and tested BOTH a 7RM AND a .280AI?
Didn't think so, I have.

Seems the real life experience I have with the .280AI gets your dander up as if I were goring your sacred ox.

You told me in another thread to try the 7RM, 7 or 8 of them actually. (I've owned 2 and loaded extensively for another)

I'll turn that around on you. Try the .280AI, 7 or 8 of them actually.

At least I've first hand experience with BOTH of these cartridges.

What was that about baseless conjecture and speculation again?

Unless it's a 7 Remmie.....