6.8 SPC bolt from 223/5.56 bolt

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6.8 SPC bolt from 223/5.56 bolt

LR1955 Offline

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#21

01-15-2018, 01:01 PM

bj139 Wrote:Does anyone have any idea if a 223 bolt can be opened up slightly in a small lathe to function with a 6.8 SPC case?

bj:

I actually got a 5.56 bolt that was opened up to Grendel diameter. It was a prototype from Olympic Arms. Surprisingly, it lasted longer than the Colt 7.62 X 39 and Grendel bolts of that time (not today), before it sheared lugs. I am not sure if they hardened it or not.

So, I know it can be done. The question is if it is worth destroying two perfectly good 5.56 bolts for something that you can be guaranteed will shear lugs.

LR55

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Messages In This Thread

6.8 SPC bolt from 223/5.56 bolt - by bj139 - 01-14-2018, 03:48 AM

6.8 SPC bolt from 223/5.56 bolt - by Tex Nomex - 01-14-2018, 02:39 PM

6.8 SPC bolt from 223/5.56 bolt - by NugginFutz - 01-14-2018, 07:05 PM

6.8 SPC bolt from 223/5.56 bolt - by bj139 - 01-14-2018, 07:15 PM

6.8 SPC bolt from 223/5.56 bolt - by Tex Nomex - 01-14-2018, 07:22 PM

6.8 SPC bolt from 223/5.56 bolt - by NugginFutz - 01-14-2018, 08:15 PM

6.8 SPC bolt from 223/5.56 bolt - by Randy99CL - 01-14-2018, 08:31 PM

6.8 SPC bolt from 223/5.56 bolt - by bj139 - 01-14-2018, 11:18 PM

6.8 SPC bolt from 223/5.56 bolt - by StoneHendge - 01-14-2018, 11:57 PM