280 Ackley and 162 A-max

[ray toy]

Hi everyone ,
I am hoping to have a 280 ackley built on a Sako 75 action next year.
The barrel will be a senduro contour and finnished at 28 inches.
I will be having the chamber cut to use the Nosler custom 280 ackley brass and my Newlon dies will be cut with same reamer too!!
I plan to run the 162 A-maxs in this rifle and my question is what powders do you recomend please???
Thanks ...
Ray.

 

[MSLRHunter]

I have a 280AI with a 24" barrel and I shoot the Berger 168vld. I use H4831sc in mine, other powders are H1000, RL22, RL17, and many others. You should get great velocity out of the 28".

 

[TOM H]

I've had pretty good luck with 160gr AB and R-17 in my 280AI also shot some IMR-7828ssc with 160gr AB load out of Nosler manual and my barrel is 27" long.

 

[Sennaspeed]

Magpro worked best for me. Highest speeds, great accuracy, and fantastic metering.

RL22 works great too.

 

[ray toy]

Thanks for the replies guys!!
It seems that reloader 22 is quite popular!!
Any others out there using the 280 Ackley??

 

[JayR]

I have always used H4831sc with the 140s and had great luck. I just loaded up some 168 VLDs with H4831sc and IMR7828ssc, but haven't been to the range. What load and velocity are you guys getting?

 

[TOM H]

Thanks for the replies guys!!
It seems that reloader 22 is quite popular!!
Any others out there using the 280 Ackley??

One advantage I found with the longer barrel like in my 280AI loading powder like IMR-7828ssc using Nosler data start load is 57.5gr @ 2856fps and max is 61.5gr @ 3043fps. I load 58.5gr/IMR-7828ssc @3038fps with 160gr AB and 56gr/R-17 same bullet @ 3046fps. I had my 280AI throated little longer and if I went to max loads using IMR-7828ssc I'd be well over 3100fps same with R-17.

Don't get me wrong I'm pushing powder I using and I'm sure anyone putting 28"long barrel would understand advantage to doing that. I started couple grs under start loads.

 

[mtnwrunner]

ray toy----I actually have a sako built 280 ack with a benchmark barrel. I shoot the 168 berger with rl 17. Very accurate rifle and with 54.8 grains I get 2950.

Randy

 

[woods]

I have a 280AI built on a Sako 75 from a 270 winchester. It was done by Hart and has a 26" factory contour 1 in 8.5 twist barrel .313" neck

I am with Tom H on powders and bullets. Have had the gun for a few years and have tried

IMR 4350
IMR 4831
H 4831SC
RL 19
RL 22
RL 25

and finally RL 17

My load is 56 agr RL17 with the 160 gr Accubond. IMO the Accubond is as accurate as the AMAX and is a hunting bullet. The RL17 gets you to the velocity you want long before you are at max and gives me very consistant velocities with low standard deviation and excellent accuracy

One thing on the Sako 75 action that happened to me and may have to be addressed with yours. That is a 3 lug action and the lug that was lowest on ejection would hit the top edge of the shoulder/case body. It would still eject but would leave a mark on the cases and was irritating. Gunsmith beveled the edge of the lug and fixed problem

 

[ray toy]

Hi Lads ,
Thats magic and a big thanks for your replies!!!
If anyone else wants to add their experince please do!!! , just want to get the big picture for when i pick her up in the new year!!!
All the best ,
Ray

 

[lhouston78]

I have built two of them on remy actions. The first one I shot rl-22 and 162 amax's and the second I did rl-17 and 168 bergers and both shoot great and are scary accurate. Not sure on the first ones speed but the second one runs 3020 with no problem and shoots 3/8" on a regular. And just for your info I have shot a 16" rock at 1760 yards with no bullet flight problems.

 

[ray toy]

Thats great and thanks for your replies!!
Happy Christmas and best wishes for the New Year to you all..
Ray.