I found an older (pre-Remlin) 700 ADL .30-06. I already have a custom long range .30-06, so it's going to be something else. I have spare .264" and .284" barrels sitting around. I have an idea for the .284" barrel for a project down the road, so I'm leaning towards using the .264" and building a 6.5X55mm, 6.5-06, or long action .260 Rem.
I have a .260 rem and have had a 6.5x06, of the three you mentioned I would go with the 6.5x06 (see my story on the longrange hunting thread). My 6.5x06 had a 30' barrel and I could get 3050 fps with a 140 grain bullet. But you couldn't go wrong with any of the calibers you mentioned.
What is your .284 project? I have a 6.5x284 but needs a longer barrel to get the needed velocity. I would go with the 6.5-06
“If you want to know all about a man, go camping with him. Probably you think you know him already, but if you have never camped on the trail with him, you do not”. Eldred Nathaniel-Woodcock. “Fifty Years a Hunter and Trapper.”
Since you have the long action the 284 case is very strong and can handle some stiff loads. Go 6.5 x 284. Other hand seems like you cant find Winchester 284 brass have to spend the extra buck on Laupa, etc. If you could find reasonable 30-06 brass could be the ticket than.
The 6.5X55 BJ AI is definitely a front runner. Unlike the 6.5mm-06, I like that I can find 6.5X55mm locally to shoot if I don't have AI handloads with me.
Originally Posted by bigben
What is your .284 project?
I haven't decided for sure, but may go with a 7mm-08 since my donor will be a 40X repeater. I have a .280 Winchester 70 Featherweight and a couple 7mm Rem Mags, so I stock 162gr. A-Max bullets already.
The only drawback I see to the .284 Win compared to .280, 7mm-08, or even 6.5X55, is the cost of factory ammo in a pinch. .280 is $30, 7mm-08 is around $21, 6.5X55 is $17, .284 is $50. All but the .284 are usually on the shelf at my local sporting goods shops, even throughout the ammo shortage of the past year or so.
From what I have read, it is a step down in case capacity/velocity from all of the others. Being even shorter than a .308 case, it might have problems feeding in my long action, too. The biggest benefit I see to the 6.5X47 is the Lapua brass, but Lapua brass for 6.5X55 is one of their best priced calibers. Unless something drastic changes, I am pretty sure I'm going to go with 6.5X55 BJAI.