On Thursday, August 2, 2018 at 11:43:42 AM UTC-4, Keyser Soze wrote:
On 8/2/18 11:25 AM, justan wrote:
Its Me Wrote in message:
On Wednesday, August 1, 2018 at 9:41:49 PM UTC-4, wrote:
On Wed, 1 Aug 2018 20:02:12 -0400, Keyser Soze wrote:

Hardest part was learning how to properly
headspace a barrel. Do it wrong and possible kaboom.

More like a failure to go into battery, causing a failure to fire or
failure to extract, causing a double feed jam.

He's talking about the AR-15 he "built", and there's really nothing to headspace on one. If the barrel and receiver are properly machined to spec, it has the proper headspace built into the design. When it becomes important is when you are fitting a more traditional barrel and receiver together, and are doing the machining yourself. Let's say you have a Mauser 98 action, and you're building a 30-06 with a Shaw barrel. Then you have to check and machine in the correct headspace, and even then it's not hard to do..


Another fabricated Fat Harry story?


Barrels in sporting rifles don't headspace themselves automatically, and
it is worth taking a few minutes to check it. If JackOff wants to take
the chance of a kaboom, it is fine with me.

I wasn't talking about a "sporting rifle", I was talking about an AR-15. If the receiver and barrel are manufactured to spec, then they simply work. The barrel has a flange that butts up to the receiver, and the castle nut holds it in place. You can get a go/no-go checker, but because of the design changing the headspace on an AR is a complex process, more complex than a sporting rifle that uses a conventional design. It takes a headspace that is severely out of spec to even think about going kaboom.

You should stick to writing jingles, fat boy.