Thread: 280 AI loads

Hi ya'll. Been doing some development on my 280 AI. Have worked up some loads and got to 55gn 2209 (half gn over adi book max), 150gn LRAB's. Speeds a bit slow at 2830fps but shooting really well. The fallow at 325 didn't seem to care too much . Anyone care to share their loads or experiences ( its a Tikka 22"barrel and 9.5" twist). Will be fun to have a tinker with. Cheers

One of my mates loads 280AI, with 162 amax and 150 ttsx, I'm sure he'll be happy to share info.

Thanks GWH that would great!

Pm Chainsaw. He knows a fair bit about said round

Speeds not everything (says the man with a slow load! )

I'm currently shooting 162 amaxs at a very low 2750fps using imr7828. Furthest shot with that load was 399yds and a very dead deer. I've the same pill going 2930fps with ar2209 but ran out and havent bothered to get more as I have other powders to burn through. using Vihtivouri n550 ive had 140gr accubonds going 3200fps and 150gr BTips going 3150fps. All sub moa loads. Waiting on some eld-x to turn up in the post.

G

Thanks guys for the replies.

Will pm chainsaw.

Started with 2209 as that's what I had in the cab. Totally agree that speeds not everything and pleased that got a good starter, but can always be betterer. Will try a 162/168gr projectile and possibly a powder change. Impressed how nice the 280 is to shoot. When are the eld's supposed to be available??

Thx, M

ElD-x are in the shop now

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@Dr. Watson ?
I would be real interested to hear what he got out of his forbes.

Originally Posted by Munsterlander

Thanks GWH that would great!

With the 162 Amax he runs 59 grains 2213sc in the nosler brass. Only 58 in the lapua brass, for 2890 in the Nosler, and hasn't chrony'd in the Lapua but expects about 2850.

7828ssc gave higher velocity but not as accurate.

Originally Posted by GWH

With the 162 Amax he runs 59 grains 2213sc in the nosler brass. Only 58 in the lapua brass, for 2890 in the Nosler, and hasn't chrony'd in the Lapua but expects about 2850.

7828ssc gave higher velocity but not as accurate.

Barrel length?

Originally Posted by Shearer

Barrel length?

Sorry, 24 inch

Just been in and picked up my adi powder order, and noted the 162 eld-x are on the shelf.

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barrel length is very important to get best velocity and benefit from 280AI. I'm running RL22 w 162AMAX in 24in bbl and getting 2850 fps at the accuracy sweet spot (0.3moa). Went up in load dev significantly above that (up to 2950 fps from memory) but groups opened up. 2850 fps gets me to 800 yrds for ethical impact velocities , which is more than I need in most situations.
RL22 is just about as hard to get as RL17 at the moment ... but the new temp stable version RL23 is available in some Sth Is stores. ADI2217 would also be good alternative.

Standard 280 Rem with long throat 59gns N560 for 2910fps and very accurate.....Shoots better than I can

24 inch barrel

Was down at 2750fps with pressure signs with ADI powders

Thanks for all the info. Really helpful. Keep em coming. Will report back with some results in next few weeks.

On an aside had gunworks do the machining and really happy with their work. Also Darren at Dpt. While he sold me the suppressor he recommended gunworks do all the work to save on logistics.

M

280 Ackley
168 VLD
N560 @ 60.0
Fed 210

2900fps

Out of a Tikka conversion.

This is hot ***beware***