6.5 Creedmoor, 260, or 6.5x55...

[LongRange]

I think I've settled on 260. Seems the most versatile and has tons of data. Also I can juat resize the hornady match 308 brass Ive got but dont use.

yes but like stomp said youll need to outside neck turn because after sizing down your necks are going to be to thick and may not chamber and if they do the thick necks will cause high pressure.

[upSLIDEdown]

Well I'm looking to di a build. Ended up getting my boy a H&R 44mag so the 250 savage project has taken a back seat.

I've always liked a Creedmoor but I'm afriad its just a fad and will fade away where components will be unavailable. 260 is another choice. Not incredibly common component wise but is simple to make with 308 brass, which I have a good bit of 308 brass to feed my savage 10 308. Then theres the subtle swede. Have a m96 but only 20 pcs of brass. Brass is available but pricey.

It'll be a general purpose rifle for target and hunting. Ranges will not exceede 500yds. Either way I will have to get a new action.


I think I've settled on 260. Seems the most versatile and has tons of data. Also I can juat resize the hornady match 308 brass Ive got but dont use.


I'm really not sure what the point of this thread was... lol Seems to me you had settled on the 260 from the get-go. :noidea:

[Robinhood]

Don't let the 6.5 SLR get in the way.

[stomp442]

Why stop at the 6.5SLR? Go all the way improved and get the most for your buck and the case.

[scope eye]

What case is the SLR based on.

Dean

[stomp442]

Same just has a 30 degree shoulder and instead of a 40.

[stomp442]

There is really no performance difference between the 6.5SLR and the .260 Ackley at least in what I have seen and read. Supposedly easier to feed from a magazine but I have never had any trouble feeding an Ackley case from the magazine.

[LongRange]

Ive seen a lot of debate over the 260 vs 260 ackley....other than less case stretch and a small gain in case capacity what is the advantage of the AI? other than its an AI...and is case stretch REALLY that much less?

[scope eye]

10% extra case capacity and an average increase of 150 fps, is more than a small gain in my book anyways.

Dean

[stomp442]

Increase in case capacity but also makes the 260 much more efficient. With 42gr of H4350 I'm am able to get 2940fps out of my 260AI. For comparison sake I am running 43.5gr of H4350 in my standard 260 to achieve 2860 fps. Both 26" barrels and I know a lot of the difference in velocity could be attributed to a fast barrel but not all of it.

[upSLIDEdown]

You guys are making me want to make my next barrel a 260AI instead of a Creed... lol

[LongRange]

10% extra case capacity and an average increase of 150 fps, is more than a small gain in my book anyways.

Dean


Increase in case capacity but also makes the 260 much more efficient. With 42gr of H4350 I'm am able to get 2940fps out of my 260AI. For comparison sake I am running 43.5gr of H4350 in my standard 260 to achieve 2860 fps. Both 26" barrels and I know a lot of the difference in velocity could be attributed to a fast barrel but not all of it.

interesting...some day when i get over the sticker shock of the new car i just bought the wife and my obsession with the 6x47lap ill have to re-barrel in 260AI....or should i say in december or january.

[Robinhood]

There is really no performance difference between the 6.5SLR and the .260 Ackley at least in what I have seen and read. Supposedly easier to feed from a magazine but I have never had any trouble feeding an Ackley case from the magazine.

I am betting that the 6.5 SLR/S improved will hit 2950 plus with a 142 smk with under 44 grains of powder. Longer neck, COAL 3.845 typical pita to make brass. That closing in on the 6.5-284 with more barrel life. Basically a Mystic with a longer neck. I think I may have to be the crash dummy.

[scope eye]

The 6.5 WSM is also a viable option, plenty of UMP, I can send those 140s @ 3500 +

Dean

[mwells72774]

Well snagged a nice 260 barrel from a kind gent on here so just waiting for it to get here.

[stomp442]

I am betting that the 6.5 SLR/S improved will hit 2950 plus with a 142 smk with under 44 grains of powder. Longer neck, COAL 3.845 typical pita to make brass. That closing in on the 6.5-284 with more barrel life. Basically a Mystic with a longer neck. I think I may have to be the crash dummy.

I have had my .260AI a little over 3000fps but it just didn't shoot well enough for me pushed that hard. I have built quite a few .260AIs here in the last couple years for my self and a few friends of mine and everyone of them shoots the best right around the 2950 mark. There is a nice thread over on coueswhitetail.com that a guy built a 6.5SLR and he documented very well step by step all the way through load development.

[LongRange]

Well snagged a nice 260 barrel from a kind gent on here so just waiting for it to get here.


You will be very happy with the 260.

[LongRange]

I have had my .260AI a little over 3000fps but it just didn't shoot well enough for me pushed that hard. I have built quite a few .260AIs here in the last couple years for my self and a few friends of mine and everyone of them shoots the best right around the 2950 mark. There is a nice thread over on coueswhitetail.com that a guy built a 6.5SLR and he documented very well step by step all the way through load development.


Ive shot my plain jane 260 at 3076fps with 142g smks with a pretty nice 5 shot group but the brass wasnt happy...5pcs of twice fired lapua brass went in the recycle bin.

[upSLIDEdown]

The 6.5 WSM is also a viable option, plenty of UMP, I can send those 140s @ 3500 +

Dean


Well that sounds fun.

[Hotolds442]

Well that sounds fun.
It is!!