6PPC to turn or not to turn?

[xr650rRider]

I guess that a prudent shooter would order enough cases from the same lot to last for a good while, , measure them, and then order a reamer.

I trusted that Manson probably knew more than I did and had reasons for a .276" neck for virgin Lapua brass.

 

[Shooter13]

My barrels are all .262, so I had no choice but to neck turn, but I'm considering having the necks reamed larger. I'm still going to skim them so there's not going to be an actual "no turn" for me, but hogging all that brass off in 2 steps and making them so thin that they get ruined if you look at them crosseyed is something I'm ready to get away from.

Mine were .268, I am now going to no turn, I will skim cut them but that is all, I purchased a reamer to my specs from PTG. It's called the "Crum Special" LOL .274

 

[jackieschmidt]

These are actual measurements and anything below .276" is a little tight for me for true no-turn, now if you want to clean up necks, then a .274" might be about right.

Blue box Lapua once fired. 68 Fowler FB
View attachment 1423686


68 Bart's Ultra FB
View attachment 1423687

That is strange.
With my bullet, the cases I am using, bought a few months ago, measure an average .272.
The base of my bullet is .2433.

 

[LHSmith]

Going with a no-turn neck leaves you at the mercy of the brass manufacturer to keep certain tolerances. Historically the manufacturers have trouble doing that.

 

[xr650rRider]

That is strange.
With my bullet, the cases I am using, bought a few months ago, measure an average .272.
The base of my bullet is .2433.

I threw the box away that brass came in but they had to be close to 10 years old. Probably some of the earliest blue box brass as the previous brass I used for .262" neck was gold box.

 

[Shooter13]

That is strange.
With my bullet, the cases I am using, bought a few months ago, measure an average .272.
The base of my bullet is .2433.

I have some new Lapua 220 Russian, I'll expand them and seat an Avenger and a Hillbilly and give you some measurements tomorrow just to see what I get.

 

[USMCDOC]

These are actual measurements and anything below .276" is a little tight for me for true no-turn, now if you want to clean up necks, then a .274" might be about right.

Blue box Lapua once fired. 68 Fowler FB
View attachment 1423686


68 Bart's Ultra FB
View attachment 1423687

how are you liking that ELS

 

[xr650rRider]

how are you liking that ELS

Works flawlessly. Nice to reach up and adjust the feed rate while your cutting. Find that sweet spot.

 

[jackieschmidt]

I have some new Lapua 220 Russian, I'll expand them and seat an Avenger and a Hillbilly and give you some measurements tomorrow just to see what I get.

Measure the average wall thickness too.

 

[Shooter13]

Here is the Hillbilly unturned just expanded, next post will be the Barts, Mikes @gunsandgunsmithing EZ Chkr in the background!

 

[Shooter13]

View attachment 1426054View attachment 1426055View attachment 1426056View attachment 1426057
Here is the Hillbilly unturned just expanded, next post will be the Barts

Showing the 0.0000 gauge because I know "someone" will say I didn't start from zero! ;-)

 

[Shooter13]

You can see the variance on the 2 pieces of brass.

 

[Clancy]

I should have never counted on neck wall thickness being the same from batch to batch. It has never been for me, and has gotten progressively worse over time. I’m talking spreads of several thousandths in some cartridges.

Lapua 6BR in the blue boxes hasn’t been far off of 268 loaded (I’ll give them that one) but I’d not chamber or have anyone chamber a no turn without my brass in hand these days.

 

[Shooter13]

I should have never counted on neck wall thickness being the same from batch to batch. It has never been for me, and has gotten progressively worse over time. I’m talking spreads of several thousandths in some cartridges.

Lapua 6BR in the blue boxes hasn’t been far off of 268 loaded (I’ll give them that one) but I’d not chamber or have anyone chamber a no turn without my brass in hand these days.

Well the ways these look my .274 neck should work perfectly, when I get one chambered I'll do some rounds with no skim and see how they turn out! I purchased 10 boxes of Lapua 220 Russian of the same lot number.

 

[gunsandgunsmithing]

I should have never counted on neck wall thickness being the same from batch to batch. It has never been for me, and has gotten progressively worse over time. I’m talking spreads of several thousandths in some cartridges.

Lapua 6BR in the blue boxes hasn’t been far off of 268 loaded (I’ll give them that one) but I’d not chamber or have anyone chamber a no turn without my brass in hand these days.

Hard to disagree but the 6BR change was what now...15 years ago or close. Now it appears we have just the opposite with new 220R brass. Still, if given the choice, Lapua is head and shoulders above 2nd best, overall. Maybe if you're loading fairly mild, there are other good choices but I've not found it for myself yet. Does it suck...yep. But I think they'll get it sorted out. Hopefully, Lapua isn't owned by Russia by then because we'll have a lot more important things to worry about before that happens, here as well. I bought 1000 pieces of the new Lapua 220R and I'm glad to have it. I'd rather not, but I can skim cut them or open the chamber neck before I waste money on brass that doesn't hold up like Lapua. Barrels don't last forever. This too shall pass.

 

[jackieschmidt]

View attachment 1426066View attachment 1426067View attachment 1426068View attachment 1426069View attachment 1426070
You can see the variance on the 2 pieces of brass.

That’s what I am getting too.