260 ackley improved load data needed

[MarkVaughn22]

I have been in reloading for a few years but nothing serious so im still new.I have never shot in a match and im not a sniper "just throwing that out there" I dont know all the lingo but some of it I am having trouble finding a load that works well in my 260 ackley any help will be greatly appreciated I have a 24in bartlen barrel semi heavy with a 1/8 twist on a savage 110 action i have 123sst, 120gmx,143eldx,140nbt, 140rdf, 130eldm,135a-tip,140accubond, 129sst i have R17,R19,R23,R25,R26, varget,h4350,imr4350,imr4831,h4831,imr4895,imr8208xbr,bl-c(2),h1000,imr7977,w760,benchrest, uniquie Large rifle reg/match fedral primers and mag reg/match fedral primers Thank you

 

[46and2]

Anyone shoot 260AI ?

I have a 26" Criterion 8 twist 260AI Match chamber/throat coming. I've had a few different Ackeys before, I have tried COW and Bullseye but never get more than 90% formed and I really don't want to waste primers at this time. So if I can get a load in the 4s or better I will be happy until...

forum.accurateshooter.com

It will be several weeks before my barrel is ready but as soon as I get my brass formed I'll be developing loads with you.

 

[Tommie]

I have been in reloading for a few years but nothing serious so im still new.I have never shot in a match and im not a sniper "just throwing that out there" I dont know all the lingo but some of it I am having trouble finding a load that works well in my 260 ackley any help will be greatly appreciated I have a 24in bartlen barrel semi heavy with a 1/8 twist on a savage 110 action i have 123sst, 120gmx,143eldx,140nbt, 140rdf, 130eldm,135a-tip,140accubond, 129sst i have R17,R19,R23,R25,R26, varget,h4350,imr4350,imr4831,h4831,imr4895,imr8208xbr,bl-c(2),h1000,imr7977,w760,benchrest, uniquie Large rifle reg/match fedral primers and mag reg/match fedral primers Thank you

Anyone shoot 260AI ?

I have a 26" Criterion 8 twist 260AI Match chamber/throat coming. I've had a few different Ackeys before, I have tried COW and Bullseye but never get more than 90% formed and I really don't want to waste primers at this time. So if I can get a load in the 4s or better I will be happy until...

forum.accurateshooter.com

It will be several weeks before my barrel is ready but as soon as I get my brass formed I'll be developing loads with you.

Mark - You’ll have better luck getting answers to this question by posting in the reloading section.

 

[Alex Wheeler]

RL22 and 140 bergers was always a good combo when I shot one.

 

[Fast14riot]

H4831 and RL23, start around 44gr and a 140 for fire forming. Start at 46.5gr in fully formed brass, work up to about 48gr. Probably find a node around 47.5. H4350, around 42gr fire forming and start around 44gr formed, working to 46ish.

 

[Will Henry]

Load a 140 just as you would in a standard 260 and shoot it. The case capacity increase is minimal and you want to use a snappy load to fireform. Do not use a mild load. If you do, you will end up with excessive head clearance on your fireformed brass. If it was me, I would load 47 of 4831 and the 140 of the day and shoot it. WH

 

[Burnt Powder]

My 7.7 twist Kreiger barrel tolerates nothing lighter than 130 gr bullets. 140s work well too. Use the heavy std 260 load as a starting place. 4831, 7828, 760, 4350, Re 22, Re16, to name a few.

 

[MarkVaughn22]

Mark - You’ll have better luck getting answers to this question by posting in the reloading section.

i just joined and not familiar with this site yet ill see if i can do that thank you

 

[MarkVaughn22]

Load a 140 just as you would in a standard 260 and shoot it. The case capacity increase is minimal and you want to use a snappy load to fireform. Do not use a mild load. If you do, you will end up with excessive head clearance on your fireformed brass. If it was me, I would load 47 of 4831 and the 140 of the day and shoot it. WH

i have read that a few people are not liking the RDF would that be the best to load to fire form just to get rid of the bullets like 47 gr of imr4831 with the 140RDF to fireform i have alot of mag primers would it be ok to use those for fire forming to save my large rifle primers for fine tuning?

 

[MarkVaughn22]

H4831 and RL23, start around 44gr and a 140 for fire forming. Start at 46.5gr in fully formed brass, work up to about 48gr. Probably find a node around 47.5. H4350, around 42gr fire forming and start around 44gr formed, working to 46ish.

thank you i really apreciate it

 

[wagonman]

H4831 and RL23, start around 44gr and a 140 for fire forming. Start at 46.5gr in fully formed brass, work up to about 48gr. Probably find a node around 47.5. H4350, around 42gr fire forming and start around 44gr formed, working to

 

[Fast14riot]

i have read that a few people are not liking the RDF would that be the best to load to fire form just to get rid of the bullets like 47 gr of imr4831 with the 140RDF to fireform i have alot of mag primers would it be ok to use those for fire forming to save my large rifle primers for fine tuning?

I use 44gr of H4831 under any 130-140 for fire forming. It shoots so damn well, its a standard accuracy load in 260 rem. I don't even worry about doing a load work up. I bought several hundred 130smk pulls and it will shoot 1/2" 10 round groups at 100 yards with them. I don't typically fire form beyond 600 yards, though, mostly 200-300 yards.

Do yourself a favor and either sell the RDF or relegate them to fire forming at short range. Ive shot some groups in the 1s at 100y with them, but I've also had some really wild upwind 6's at 1000y with them. I went through about 600 trying to make them shoot without the Random Damn Flyer.

 

[wagonman]

the brass your going to use will determine your powder charge, rem, win, brass have more internal volume than lapua, peterson even less. 43 gr h4350 in formed lapua cases, 142 sierra mk @2.940 is max in my rifle the load runs 2925 in a 28in barrel, work up to loads your finding here, when your bolt lift gets stiff or ejector marks show up drop back on your charge my self I run vv n-160 142smk,

 

[Fast14riot]

the brass your going to use will determine your powder charge, rem, win, brass have more internal volume than lapua, peterson even less. 43 gr h4350 in formed lapua cases, 142 sierra mk @2.940 is max in my rifle the load runs 2925 in a 28in barrel, work up to loads your finding here, when your bolt lift gets stiff or ejector marks show up drop back on your charge my self I run vv n-160 142smk,

Thats a good point. All my data is from lapua and Peterson SRP brass. In several 260AI ive seen around 48gr of H4831 and RL 23 being about the max, but as always shooter beware and load smart.

 

[wagonman]

I ran 48gr. h4831 in lapua cases with 142 sierra before I ran out, took a chance and bought a jug of n-160 the ES and SD were better, my vertical @ 1000 really came together, blind luck on my part.

 

[STOMP442]

H4350 or R16 has worked best for me in the .260 Ackley. Somewhere around the 44gr mark depending on your brass being used should get you into that 2950fps node. Fantastic caliber.

 

[littlebuddybr]

First I would find out what the fb is. If it is real short. Use lighter bullets. If it is long, use the 140 class bullets.
I have seen 260ai with a really short throat
And no matter what it wouldn't shoot those long bullets stuffed way down in the case.
Once I extended the throat. It was instantly shooting bug holes w 140 class bullets.

 

[MarkVaughn22]

I use 44gr of H4831 under any 130-140 for fire forming. It shoots so damn well, its a standard accuracy load in 260 rem. I don't even worry about doing a load work up. I bought several hundred 130smk pulls and it will shoot 1/2" 10 round groups at 100 yards with them. I don't typically fire form beyond 600 yards, though, mostly 200-300 yards.

Do yourself a favor and either sell the RDF or relegate them to fire forming at short range. Ive shot some groups in the 1s at 100y with them, but I've also had some really wild upwind 6's at 1000y with them. I went through about 600 trying to make them shoot without the Random Damn Flyer.

thank you i appreciate your advice

Thats a good point. All my data is from lapua and Peterson SRP brass. In several 260AI ive seen around 48gr of H4831 and RL 23 being about the max, but as always shooter beware and load smart.

Good info thank you

 

[MarkVaughn22]

First I would find out what the fb is. If it is real short. Use lighter bullets. If it is long, use the 140 class bullets.
I have seen 260ai with a really short throat
And no matter what it wouldn't shoot those long bullets stuffed way down in the case.
Once I extended the throat. It was instantly shooting bug holes w 140 class bullets.

fb? not sure is that free bore?

 

[MarkVaughn22]

the brass your going to use will determine your powder charge, rem, win, brass have more internal volume than lapua, peterson even less. 43 gr h4350 in formed lapua cases, 142 sierra mk @2.940 is max in my rifle the load runs 2925 in a 28in barrel, work up to loads your finding here, when your bolt lift gets stiff or ejector marks show up drop back on your charge my self I run vv n-160 142smk,

thank you for the advice as well