What To Build Next

[rc508pir]

If I remember correctly Olympic arms went belly up a short time ago, or shortly will. Just working off memory for that info.

Warrantee work ceased back in January so think you're right. Website is still up and speaks of "Transition" so maybe they sold the company, but doesn't say much else

 

[rc508pir]

.243 WSSM is a screamer. @dennishoddy has one and all but talked me into making one myself. Just waiting on the winter months and it will get done.
Ballistic performance
Bullet mass/type Velocity Energy
58 gr (4 g) VMax 4,068 ft/s (1,240 m/s) 2,132 ft·lbf (2,891 J)
70 gr (5 g) BT 3,707 ft/s (1,130 m/s) 2,136 ft·lbf (2,896 J)
80 gr (5 g) BTSP 3,545 ft/s (1,081 m/s) 2,233 ft·lbf (3,028 J)
90 gr (6 g) SFT 3,280 ft/s (1,000 m/s) 2,151 ft·lbf (2,916 J)
100 gr (6 g) BTSP 3,136 ft/s (956 m/s) 2,184 ft·lbf (2,961

What magazine would that even fit into?

 

[D. Hargrove]

What magazine would that even fit into?

8 rounds fit in a 20 round 5.56/.223 mag.

http://www.snipercountry.com/Articles/243_WSSM.asp
pretty decent article with lots of good gouge, mags, fps, etc

 

[Defcon Shooter]

Build a Garand that's always fun build

 

[rc508pir]

8 rounds fit in a 20 round 5.56/.223 mag.

http://www.snipercountry.com/Articles/243_WSSM.asp
pretty decent article with lots of good gouge, mags, fps, etc

That's gotta put a lot of strain on a AR15 bolt though

 

[dennishoddy]

That's gotta put a lot of strain on a AR15 bolt though

How so?

 

[rc508pir]

How so?

I don't know the pressures on 243 WSSM but, 556 alone puts a lot of heat and stress on bolts inside the carrier (where the cam pin goes through the bolt)

Guess it would depend on the barrel length, gas tube length and the length past the gas port

 

[dennishoddy]

Oh yeah, lots of variables. The SAAMI specs allow for 65K pressures in the .243WSSM, and the bolt is not the same as the 5.56. It's parent cartridge is the .300WSM. The bolts have been designed to handle that. My gun has probably a thousand rounds through it with almost zero cleaning after the 200 round break in as suggested by the MFG. It shot sub moa when new, and shoots the same now.
I clean barrels when they start losing accuracy in all of my guns.

 

[D. Hargrove]

@rc508abn -Dennis knows the round far better than I. A build is in the near future for me. I am actually looking as we speak at components.

 

[rc508pir]

Oh yeah, lots of variables. The SAAMI specs allow for 65K pressures in the .243WSSM, and the bolt is not the same as the 5.56. It's parent cartridge is the .300WSM. The bolts have been designed to handle that. My gun has probably a thousand rounds through it with almost zero cleaning after the 200 round break in as suggested by the MFG. It shot sub moa when new, and shoots the same now.
I clean barrels when they start losing accuracy in all of my guns.

Other than the bolt face its still a standard 556 bolt and carrier right?