260AI roll call

[DogBuster]

Built one years ago

Savage s/shot…heavy 8 twist PAC-Nor

 

[Fast14riot]

I bought a Tikka T3x Lite Veil Wideland in 6.5 Creedmoor (heavy sporter D18 barrel) and I'm having my gunsmith rechamber it to 260 AI. His reamer will give me a no neck turn chamber dimensioed to use Redding 260 AI Type S Match Bushing Dies.
I'm going to use:
Alpha 260 Rem SRP brass
Vihtavuori N555 powder (H4350 burning speed but with de-coppering agent)
CCI 450 small rifle primers
Speer Gold Dot 140gr (rebated boattail and HBN coated) bullets -or- Federal 140gr Terminal Ascent bullets once they are released as components (currently only available in loaded ammo)

If anyone has developed either fire forming or finished loads with N555 powder and 140 grain bullets, please share.

For fire form loads, I suspect somewhere around 44gr of 555 should work well. And you can add a grain when starting your formed load work up. But, always double check and confirm before firing.

 

[Fast14riot]

As I sit here loading ammo for a club match tomorrow morning, I noticed my round count log was approaching 1 year. Thought some might find it interesting the rate a dad of 3 teenagers on a shoestring budget shoots his #1 match gun and will report back after tomorrow how accuracy is still doing at 1000y. It was good enough to win a score target in a 200y benchrest match last month!

Barrel is a Kreiger 1:8, 1.25" straight, 29.75" long, attached to a Kelbly panda, Sidhe trigger in a Southwest Action Works stock, DSB tuner.

My load is 44.8gr to 45.2gr N555 under a 153.5 Berger in Peterson SRP brass fired anywhere from 2x to 15x. Jumping .005ish

 

[Tangent]

What does your barrel look like after the N555 use? I hear some people suggesting it may be harder on barrels than N160. I'm using N555 myself but don't currently have a borescope.

 

[Fast14riot]

I can get some scope pics after the match. This barrel has been my main gun for the past year, so has often been shot fast and hot if the wind is cooperating. My other gun has about 1800 rounds through it but has shot H4831, RL23 and some N555, mostly RL23 though. That barrel still shoots well, too. Time to stock up on barrels soon.

 

[Fast14riot]

The barrel is still shooting acceptably well. I haven't cleaned it in 3 matches, and shot a 447-23x at 1000y today. Nothing indicating it's on its way out yet, still lots of life in it.

I haven't pulled it out to clean it yet, I'll bore scope it then.

 

[littlebuddybr]

Fast14-
Good post.
What size is the 9-10-× ring?

 

[Fast14riot]

Fast14-
Good post.
What size is the 9-10-× ring?

Standard LR FC target. 5", 10" 20" for X, 10, 9.

 

[mule]

Is there any more info on N160 shooting the 153.5 bullets?

 

[mule]

Is there any more info on N160 shooting the 153.5 bullets?

No one is shooting this combination

 

[Fast14riot]

No one is shooting this combination

Going back a couple pages you can find a post by me of a buddy shooting the 156eol and N160. Start around 44gr and work towards 46.5, carefully once you get to 46.0 gr.