Two 308's

Suputin

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Finally got everything mostly together on these two rifles.

The Savage was bought on a whim when the opportunity to pick it up for a really good price dropped into my lap. I was actually going to convert it to a 30BR but the rifle shoots so well as it is that I think I will leave it alone for the moment.

In initial load testing with a different scope it routinely and easily produced 5/8" groups with 125gr Ballistic Tips at a book velocity of 3100 fps which should do nicely for pretty much anything out to about 500 yds or so.

The muzzle device is a modified NEA Phoenix Flash Suppressor. I changed the thread size to 11/16x24 to maintain as much meat around the crown as possible and then tweaked the prongs to eliminate the post shot tuning fork like ring.

All the rifle was waiting for was the Sightron scope, which came in the other day direct from Hirsch Precision. It is an SIII 16X Mil Dot. Haven't had a chance to shoot it yet but so far the scope seems a quality unit.

Sav308.jpg


Sightron16x.jpg



The second rifle has been a bit of a project rifle. It was initially built to test some ideas but has ended up being such a cool little rifle I think I will keep it. :cool:

It is a Rem 722 action with an 18.5" lightweight externally tensioned barrel. What that means is the barrel itself is a very lightweight profile but it has an aluminum tube over top that is squeezed between a shoulder machined into the barrel shank and the muzzle cap to put the barrel under tension. This helps to reduce harmonic vibration during firing. The end result is a very short, handy and lightweight rifle that maintains reasonable accuracy.

During initial testing I only had IMR4350 available which is a pretty slow powder for a short barreled 308. The result was a huge muzzle flash. The rifle is so light that I found it kicked pretty stoutly with heavy bullets as well. So the solution was a combination muzzle brake / flash suppressor profiled to match the outer tensioning sleeve.

QD308a.jpg


QD308b.jpg
 
Whats up with the barrel nut on the Savage? Why is it like that? How do you get it off?

Suputin, nice rigs. Love to hear more about those tensioned barrels.

K0na_stinky, Savage developed the Accustock line of rifles to appeal to the "Rem" type user complaints on barrel nut, side bolt release and bumpy lines.

so they came up with the smooth barrel nut, bottom bolt release, various bottom metals including a hinged bottom plate, etc.

Not sure how sales are but for a Savage fan, not my cup of tea.

If anyone has one of these rifles and wants to barrel swap, I now have slotted barrel nuts in CM and SS. That smooth nut is such a PITA.

Also, pinned match recoil lugs and reg factory recoil lugs so you don't have to deal with that Rem'ish PITA lug.

Jerry
 
If anyone has one of these rifles and wants to barrel swap, I now have slotted barrel nuts in CM and SS. That smooth nut is such a PITA.

No s**t!

When I bought the rifle it was in bits having been disassembled. I had to seek help to get it back together as I don't have a barrel wrench capable of that work. In the end it wasn't too bad but the old slotted nut is a lot easier to deal with.

If I ever pull this thing apart I will be seeking a replacement nut I can use with my Savage wrench.


Suputin, nice rigs. Love to hear more about those tensioned barrels.

Yeah, they both turned out really nice.

The Savage shoots amazingly consistent for a factory rifle. I hardly had to do any load development at all. And I love the PC trigger as it is set really light just how I like them. The whole package also looks really good.

Here is a technical explanation of the tensioned barrel concept. The difference being these guys fill the void with some kind of loose media which I didn't do, although that would be fairly easy.

http://www.teludynetech.com/technology/

To get a decent amount of tension on the barrel, I placed the barrel in the freezer before assembly. Then screwed it all together as tight as possible using my lathe chuck to hold the muzzle cap. It actually went together quite nicely and very tightly.


Weird brake but each to their own

I tried a regular sized brake at first but next to the large diameter exterior sleeve it looked really stupid. In person the large diameter brake-hider actually looks really good because of how it blends into the barrel sleeve.
 
Finally got to shoot the Savage PC with its new Sightron SIII scope. The thing that impressed me about this rifle is how it seems to effortlessly produce really respectable groups. From the moment I first tried it, it has produced these 5/8" 5-shot groups with boring consistency. This group was shot with 125gr Bergers at about 3200 fps. It produces the same kind of groups with Nosler 125gr Ballistic Tips as well.

SavPCGroup1.jpg
 
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