Need help in measuring chamber.

[mikeinco]

as long as you want details..
the other shooters were all in other CLASSES, higher up than me, i would expect them to beat my entire class, they did.
i was in the entry level class.
you failed to mention the other guy in my class is a national record holder in long range and a long range gunsmith .
he was shooting a custom target rifle, his choice of cartridges, i was shooting a copy of a mil sniper rifle.
a class win in a national contest where possible rain scared some shooters away.
it is in the record books as a win,
you fail to mention that yobuck and company said on several forums that i could not shoot/hit at 2000 yards with a 300 win mag .





Now Now Mike. I am in your camp on annealing and I believe you put the work in, but there may be a cartridge or some brass that does not need the annealing as often.Im not a bench rest shooter so I don't know.

As far as smoke goes, the 2000 yard win was against one other competitor. 2 people battling to hit a target at 2000 yards. You competed against one other rifle that was a 6.5 Creedmoor. If you include the other competitiors you were next to last. It is about time that you stop calling that a win. The chest pounding and punching on the resident old folks (yobuck) is unbecoming...especially when your claim to fame was outgunning a 6.5 Creedmoore at 2000 yards.

[Texas10]

If you read the write up on the Secrets of the Houston warehouse you'll find that Virgil never sized or annealed his brass, but used the natural springback on the brass to his advantage. He began by turning the outside and INSIDE of his brass, then hand polished the inside to get the finish he needed. He seated bullets by hand and developed a feel for the gas check ring seating into the case. He was shooting 6ppc and getting consistent groups in the .025 range at 100 yds.

By not overworking brass during sizing, or shooting, annealing becomes less important.

For my Criterion 8 twist barrel in 223, I find only neck sizing and let the brass harden to where spring back works to my favor is a good combination.

Regardless to what you do, consistent neck tension is of paramount importance, and how you achieve it is part of the fun of falling down the reloading rabbit hole.

[nksmfamjp]

Sorry about the bump, but this is an important conversation.

in the past, I was a measure and bump the shoulder 0.0015-0.002” from the fired size. This worked ok, but I think it could of been slightly better. So, I started following this to find max length I can fit.


https://youtu.be/WfWS7R1CdZI

Now I back ofF 0.002” from the longest length that will close.

[Iowa Fox]

That's just making a simple task complicated. You don't need to remove any parts on the bolt, or even go by feel. Simply measure a fired case with a shoulder comparator, and resize .002" shorter.

You won't go wrong with this advise.

Maybe use a once fired case and a twice fired and measure with a comparator. The key is 0.002 bump.

[bigedp51]

I have a Hornady cartridge case headspace gauge pictured below. The best part about this gauge is it will work with any case and you do not need to buy a gauge for every caliber you have.

Below is a once fired Lake City 5.56 case that was fired in my AR15 rifle in the Hornady gauge. I then set the resizing die up for .003 shoulder bump. As far as I'm concerned using a comparator like the Hornady gauge is all that needs to be done. Meaning the bolt does not need to be dissasembled and the Hornady gauge keeps things simple.

https://i.imgur.com/OJqNmQH.jpg

Below is what happens during full length resizig, the case is squeesed by the die and the shoulder moved upward. And its up to you to adjust the die for the correct amount of shoulder bump.

The general thumb rule is .001 to .003 shoulder bump on a bolt action and .003 to .006 for a semiauto.

https://i.imgur.com/wm05ArY.gif

In the old days before measuring gauges you would start with a .010 feeler gauge between the shell holder and die. And then use thinner gauges adjusting the die downward until the bolt would close without and resistance. It wasnt rocket science and you wanted to give the loaded cartridge a little wiggle room.

https://i.imgur.com/7FfXhJ7.jpg


One of my favorite full length resizing sayings is "The cartridge should fit the chamber like a rat turd in a violin case"

https://i.imgur.com/Y3IiYL5.jpg