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260 ackley improved really worth it?
- Thread starter Couch11b
- Start date
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JE & Lance...thanks...good clarification as the the restructuring to ai....
Clarification to the pressures on bullet depth seating.....
Lets say the boattail bullet extends to the shoulder/body junction in load 1..and boattail extends to neck/shoulder in load 2...and boattail extends to depth of width of bullet in load 3....
Everything else the same...
Which cartridge will have most pressure if a standard of .050" is used for jump....
Would it not take more pressure to expel the deeper seater bullet...
Thx
Clarification to the pressures on bullet depth seating.....
Lets say the boattail bullet extends to the shoulder/body junction in load 1..and boattail extends to neck/shoulder in load 2...and boattail extends to depth of width of bullet in load 3....
Everything else the same...
Which cartridge will have most pressure if a standard of .050" is used for jump....
Would it not take more pressure to expel the deeper seater bullet...
Thx
LongBomber
Well-Known Member
I had a 260ai done up this fall, rem ti action, wyatts extended mag box, 26" frozen fiber carbon barrel. Had it throated to seat the nosler 129ablr with the boat tail at the shoulder junction. I am running h4831, and the speeds seem pretty close to what my 6.5-284 can do. It is about the perfect case capacity for a 6.5, still breaks 3k with a 140gr bullet, but not overbore and finicky to load for like a 26nos.
Terry Scott
Well-Known Member
You will love it. With the shoulder you don't get much case stretch, additionally if you use Lapua brass you can still stand on them (Close to 3100 Fps 140 gr bergers)Yes it is!
and still get 3 to 4 firings. Really it is right up there as the most efficient of all the 6.5s
I have one and would like another.
longrangehunterII
Well-Known Member
It does what it does, down side is fire forming the round which depending on the use, will lower the barrel life. My last 260 Rem PRS gun barrel didn't last that long, but I didn't care either way. I was going to rebarrel it to the 6.5 Creedmoor last year, but decided to switch it up and go with the 6mm Creedmoor. Which has nothing to do with barrel life but recoil, and seeing the shots placed on target BTW.
Unless you're stuck with a .473" bolt face why not go with the new 6.5 PRS cartridge, 6.5 300/WSM or a 6.5 SAUM and avoid the fire forming? Or just go to the 6.5/284 or make a 6.5/06 and really bust past the whole AI thing in the speed department? Just sayin..... Not to throw a monkey wrench in your idea, I own a 280 AI, but that was because the brass was available already FF by Jarrett, 1990's ara, and years later Nosler made it available.... and now Hornady too! But I can't see that happening for the 260 AI.
If it were me, and I know your not and I wanted the speed in a short/long action std bolt face I'd go the 6.5/284 route, the really short fat mags will still beat the pants off the 6.5AI, and do it W/O Fire Forming but you'll need a mag bolt face or spend the money opening it up. I like to keep it simple though, but that's just me. The App and a twist of the turret will still place the bullet where it needs to go if you do your part no matter what you're using in reality.
Unless you're stuck with a .473" bolt face why not go with the new 6.5 PRS cartridge, 6.5 300/WSM or a 6.5 SAUM and avoid the fire forming? Or just go to the 6.5/284 or make a 6.5/06 and really bust past the whole AI thing in the speed department? Just sayin..... Not to throw a monkey wrench in your idea, I own a 280 AI, but that was because the brass was available already FF by Jarrett, 1990's ara, and years later Nosler made it available.... and now Hornady too! But I can't see that happening for the 260 AI.
If it were me, and I know your not and I wanted the speed in a short/long action std bolt face I'd go the 6.5/284 route, the really short fat mags will still beat the pants off the 6.5AI, and do it W/O Fire Forming but you'll need a mag bolt face or spend the money opening it up. I like to keep it simple though, but that's just me. The App and a twist of the turret will still place the bullet where it needs to go if you do your part no matter what you're using in reality.
Personally I've never understood why some people are so against fire forming. I've always looked at it as my barrel break in period. During that first 50 or 100 rounds you can also start to get an idea of what is the barrel is going to like as far as powder and bullets. Just my opinion, I'm not saying it's gospel....
longrangehunterII
Well-Known Member
I still FF 280 RWS, and Remington brass in my 280 AI since the Nosler brass is so soft. It still adds up to bullets/powder down the barrel, even with a FF load it shots bugholes I could hunt with, but haven't.
It's more about once I have a great load I hunt with the brass has been only fired once, or not at all since those shoot so **** well.
It's more about once I have a great load I hunt with the brass has been only fired once, or not at all since those shoot so **** well.
J E Custom
Well-Known Member
Actually, When I build any AI cartridge, I cut the chamber like PO Ackley intended us to do and realy there is no need to go through the fire forming process when the SAMMI ammo can be fired in that chamber with very good accuracy and hunting with standard ammo and fire forming to the improved case dimensions at the same time is normal.
If you buy new brass, it can be loaded with near maximum charges and used to hunt with. After that, the improved case is ready to load with the new case in mind. If cut properly, the parent cased ammo can be fired in an Ackley chamber with less than 1 MOA accuracy so you can take advantage of this feature and save time and money and not waste components. On good quality barrels break in normally takes 7 to 10 shoot and clean shots and at that point, hunting can finish the brake in, minimizing useful barrel wear.
If you shoot and clean often (After 3 to 5 shots) break in should not take over 30 to 50 rounds to reach the barrels potential. So why not do the brake in while hunting. Plus if you forget to take the AI ammo, you can buy parent cased ammo and not ruin your hunt. (You would be suppressed how many times someone has left their ammo at home.
J E CUSTOM
I had a 260ai built for me for deer hunting. I shoot the barnes LRX 6.5 127gr. deadly accurate even when fire forming the 260 rem brass. I have not lost 1 animal since I switched to Barnes bullets. By far my favorite caliber so far for hunting. My 243 and 308 sit in the back of the safe now.
What was your velocity with the 127gr bullets ??
I have a .308 barreled action that got very cheap. I've been wondering what to make with it. I finally made up my mind. .260 Rem AI, Wyatt magazine box, and a custom Manson reamer long throated to be able to maximize the use of the Wyatt box. I also think that I am going to use the ReMage barrel nut so I can make it a switch barrel rifle. I agree with those who say to fire form factory brass with normal loads. You need to break the barrel in any way. Accuracy is usually very good and velocity loss is not very much either.
That's probably the best idea i've heard all day!
jackthebear
Well-Known Member
- Joined
- Mar 12, 2013
- Messages
- 78
What velocities could a person expect pushing the 130 out of a 22" tube?
