What is the length of the .223 SF magazine with block installed?

[nsaqam]

I searched to no avail. Seems like mag lengths would/should be in the FAQ's.

Anyone have a .223 SF and a caliper handy?

[LabRat2k3]

If no one answers before then I can get you the measurement tomorrow afternoon.

[Skunce]

Mine measures 2.400"

[nsaqam]

Thank you!

[devildogandboy]

i got 2.408 on one and the other measured 2.420.

[sharpshooter]

It would depend on how old the box is. The original .223 box is 2.325". After the .204 Ruger came out, the block was reduced to take a longer cartridge, and it is 2.425"

[nsaqam]

Thanks Mr. Moreo!

I'll need to inspect one soon at my LGS to ascertain whether the block can be machined thinner or removed and replaced with a Delrin block.

[groaner71]

Ok, just thinking aloud here... Could a magazine be modified to handle longer .223 bullets by replacing the follower with one from a .243. Would the bolt have to be modified a well? Thinking about loading 75 amax in a magazine.

[drybean]

much the same , i got 2 420 on my spare

drybean

[vulcan]

Thanks Mr. Moreo!

I'll need to inspect one soon at my LGS to ascertain whether the block can be machined thinner or removed and replaced with a Delrin block.

I have an old 112 bvss in .223. I removed the sheet metal spacer at the back of the magazine and made a thinner block out of delrin. I can run up to 2.5" oal.