Reloaders, help!

I'm not an expert at all lol, but have been learning and doing lots of research myself. I reload 260 for my Tikka T3. I full length sized for my first loads, then neck sized after fire forming.

As I understand it, neck sizing is desireable in that it works the brass less, leading to longer brass life. I guess the con to neck sizing is reliability. Leaving the brass fire formed gives very little to no clearance for debris, dirt, etc.

I've read that for range/competition shooting neck sizing, hunting FL sizing. Also, seems like more people neck size for bolt guns, where as I've seen more people FL size for semi auto mag fed rifles.

I'm sure someone else with more knowledge and experience will chime in soon, but that's what I got lol.

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The rounds will be used for long range shooting, out of a savage stealth. So it sounds like neck dies is the way to go.

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Even when neck sizing for the same chamber, you'll eventually need to full length resize. After each firing, the brass grows a small amount so that it eventually will need to be full length resized. How long that will take no one can tell you; I've got some 22 Rem BR brass I've neck sized only and has been loaded 8 times, but some day I'll have to FL resize them. If you want top notch dies that will maximize your accuracy potential, I'd suggest getting Redding full length sizing dies w/ adjustable neck bushing (Type S die). In addition, I like to full length resize brand new brass prior to loading it.
Redding Neck Bushing Dies

I'd also suggest a micrometer seating die. Again, I'm partial to Redding. The micrometer die is more accurate than others and makes it easier to change bullet seating from one bullet to another.
Redding Type S FL Sizing Die
Redding Competition Seater Die

Best quality brass is Lapua, although Norma is up there also. Yes, Lapua is expensive, but it's worth it.

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Looks like I need to bring back these full size dies I got.

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Dont do this. You can only neck size so much before the shoulder has to be pushed back. My 270wsm will only let me neck size about 4 times and then teh bolt wont close on the case. You NEED both if you plan to neck size.

Or you can FL size by pushing the shoulder back the minimum .002 required and you wont need to neck size. You have to have a way to measure that headspace off the shoulder to set a FL die though.