260 improved

[Gibbshooter43]

Well said J E Custom and elkaholic. I have a 7:08, and it is on schedule to follow the 260. Now you don't happen to have any load data for a 6.5 Gibbs do you? I've got my 240 Gibbs pretty well dialed in but there's always room for improvement.

 

[elkaholic]

Well said J E Custom and elkaholic. I have a 7:08, and it is on schedule to follow the 260. Now you don't happen to have any load data for a 6.5 Gibbs do you? I've got my 240 Gibbs pretty well dialed in but there's always room for improvement.

I think I could get you close. The Gibbs is close to the Sherman capacity wise.

 

[Gibbshooter43]

I would certainly welcome any information you'd be willing to share. So far, most of my data is from load data and that usually doesn't give you a range - starting and max; along with some 15 year old figures from LRH.

 

[elkaholic]

I would certainly welcome any information you'd be willing to share. So far, most of my data is from load data and that usually doesn't give you a range - starting and max; along with some 15 year old figures from LRH.

I'll pm you so we don't hijack this thread.

 

[TX Badger]

I'm moving mine to a long action and having the throat extended. Then it should really sing

 

[Heavyiron]

I have always felt that an Ai was always an improvement. Every one that i ever dealt with was a positive experience. Am now using the 280 ackley, and really love it .

 

[Heavyiron]

260 imp should be equal to the 6.5 284. And close to the 6.5/06. Go for it. Your cases will last a long time.

 

[MkJose]

I was mainly thinking of the improved version to limit case lengthening and possibly throat erosion. It does have a 20 degree shoulder, doesn't it? Realize velocity gain is only 50fps or so. I would think you could get 2900 with 140's and a 30" target barrel with good life. Also, Lapua makes .260 brass and if you really wanted to push it, you could make brass from the .308 Palma brass with the small primer. Just something to think about.

 

[codyadams]

I was mainly thinking of the improved version to limit case lengthening and possibly throat erosion. It does have a 20 degree shoulder, doesn't it? Realize velocity gain is only 50fps or so. I would think you could get 2900 with 140's and a 30" target barrel with good life. Also, Lapua makes .260 brass and if you really wanted to push it, you could make brass from the .308 Palma brass with the small primer. Just something to think about.

40° shoulder, and velocity gain is more than 50 fps. With a 30" barrel you will easily get 3000, with the right powder I can get about 3100 with no pressure signs.