Thickness of Newer Lots Of Lapua 220 Russian Brass vs Older Lots.

[jackieschmidt]

If you look up the definition of “getting ass handed to ,him on a regular basis”, you will see my picture.

 

[Shooter13]

You are wrong

I too thought I was wrong once but I was mistaken.

 

[BartsBullets]

Ain't we all?

Not according to the guy who posted on #75 Dave.

 

[liljoe]

But why does it matter, other than they were different? Did they shoot? Did their brass go in the gun? Did the brass have the proper sine wave. If so it doesn’t matter.

Do you think shooters brass actually measures what they think it does? Usually not even close. All of this gets back to… the only thing that matters is how it shoots.

I’ve run over .005 clearance and the gun still shot. It’s when it’s too tight you get into trouble.

Bart

This was a discussion about neck clearance. One of the guys was very strongly opinionated that you absolutely had to have .0018" clearance, absolutely no more than that or you were going to finish dead last. I then asked if he had ever actually measured what the diameter of his actual chamber was.
After checking his barrels he had closer to .003" clearance.
I totally agree with you Bart about testing. You can make all the spread sheets you want but will it shoot.
Joe

 

[D Coots]

Not according to the guy who posted on #75 Dave.

Be careful of having people switch to no turn. You only beat me by 9 places in the 3 gun, with my lowly .262 neck......

Might get a lab radar also......

And a nice blonde chick to clean for me in a bikini with big ta ta's....that'll throw the guy's off their game.

 

[BartsBullets]

Be careful of having people switch to no turn. You only beat me by 9 places in the 3 gun, with my lowly .262 neck......

Might get a lab radar also......

Well don’t Cherry pick Dave! It kicked the crap out of everyone in the HV Grand and all but 1 in the HV 100. We will leave the 2 Gun out of it

I’m not campaigning for people to switch to a no turn. Im just reporting what I shot. In our world of short range and turned necks no one would say a no turn neck would shoot let alone be competitive.

For the record
The only thing I do to the cases besides working on the primer pockets is trimming for overall length.

Bart

 

[D Coots]

Just giving you the business Bart. But still thinking about the blond. I shouldered the gun on my 5th shot 4th target on the 100HV, turned an .088 into a .275....OR, but like they say, every shot makes someone happy!!!!!!!

I applaud you for sharing your knowledge here. I understand you are just stating how your program works for you also.

Catch ya next year somewhere....

Later
Dave

 

[rwj]

And a nice blonde chick to clean for me in a bikini with big ta ta's....that'll throw the guy's off their game.

But still thinking about the blond.

All good hearted kidding aside, I was a RO at a USPSA Area match that had a team shooting whose sponsor was an adult content media company. They arrived “equipped” with a team of range girls… that squad had the largest crowd following them!

Now back to the thread topic!

 

[D Coots]

Sounds good to me....

 

[Lucky Shooter]

Anybody on here that shot the no-turn version of the 6mm Beggs ?

I wonder what the print showed for the neck ID.

I have an early version of the no-turn 220 Beggs and print shows
.257" for the neck ID.

Maybe .224 +.015 +.015 +.003 ?

It would be interesting to learn what Gene's thinking was on his
no-turn 6mm.

A. Weldy

 

[Shooter13]

Be careful of having people switch to no turn

There is no doubt that @BartsBullets can be an influencer (you know Bart you always wanted to be on tictok! LOL) but the decision for me to change or try no turn is frankly I'm tired of turning necks! Especially when you can't beat him with the infamous .262 neck, I'm not good enough to worry about .0001, Yes it appears I'll be skimming but heck I already skim and it is so much easier to take .0015 off rather than .007! That's just me.

 

[Will Henry]

Do you think the case capacity is much reduced in the new brass, and could that be an issue as well? WH

 

[PRR1957]

Try calling Lapua/Berger @ 660-460-2802.

I had a slight, actually more annoying problem with 100 Lapua 22-250 virgin case that the necks outside where scoring around the full circumference when I sized the necks to round them as they where dented/out of round. First thing I did was scrub and patched the neck sizing die with Hoppe’s Bench Rest thinking there could be a brass accumulation in the neck region of the die. Didn’t fix the scoring. So I switched to a full length sizing die, but still had the same problem. So I call Lapua and the tech I talked to, (can’t remember his name) discussed every possible reason. I hate to say that nothing was solved. I ended up skim turning the necks after neck sizing which it took off .0014” to remove the scoring.

What I observed was the necks had a slight flat discoloration on the necks in relation to the case body. This could had been a residue from the annealing during manufacturing. In hindsight I should had run the case in my vibratory polisher first, but I had already scored nine case necks, so at that point I was committed to turning the necks to keep the 100 case consistent.

Anyway. Try calling Lapua. They mite know what is going on regarding the OP’s question regarding the 220 Russian cases necks thickness.

 

[jackieschmidt]

Ok, I went to my Gun Club today and tried out this no neck turn .273 neck 6PPC.

I fireformed 12 cases and then fired them again. The barrel I used was pretty old Krieger, maybe vintage 2007. But I had written on it…,”good barrel”, so it is the one that I used the neck reamer to take my .269 neck chamber out to a .273 neck.

After the 2 firings, I used a .271 bushing with my Flat Base 68 grn bullet. The loaded round had exactly .001 clearance in the neck.

This did concern me, by they were chambering easy, so what the heck.

I worked up a load with this barrel, a front had come through, humidity was really low for our area. This meant shoot it hot. Working with the load and my tuner, I got things going.

I then shot these four 5 shot groups for record, all in a switchy left to right quartering condition.

I had zero problems. Extraction was flawless. Everything worked just the way it is supposed to.

The Targets speak for themselves. I only had one shot get away on that first group, missed a let up.

The only thing you might consider if you want to shoot a “no neck turn” is maybe a .274 neck. The base of my Flat Base measures .2434, some are a tad fatter. Boat Tails are generally dead on .243.

Anyway, the no neck turn seems to work pretty darned good.

 

[Shooter13]

That looks good @jackieschmidt, I'm have a reamer built and may change it to a .274 and not turn.

 

[gunsandgunsmithing]

That looks good @jackieschmidt, I'm have a reamer built and may change it to a .274 and not turn.

That's what I'd do. A little more sizing is no big deal. A little too tight is.... It's working for Jackie but no guarantees the next batch will be a tad thinner, or thicker. No real down side one way.. but there is with the other. The trend of late is for more clearance than it used to be. I've found this to be correct, but just IME.

 

[Dusty Stevens]

I need to order a few more neck reamers anyway. 273 works good for br brass but i need a 274&275 to go with it to be safe

 

[gunsandgunsmithing]

I need to order a few more neck reamers anyway. 273 works good for br brass but i need a 274&275 to go with it to be safe

Your BR is a .272...works great, no turn. The newer blue box(or there abouts) BR brass is a little thinner than the previous lots but .272 works good with both. Apparently, we just have to keep a little better eye on brass as it comes out of the box. I'm running .274 in my no turn 6 Grendel stuff and .271 if you want a light turn.
I have zero complaints with how either of these reamers were set up from the get go and both have what I'd call a remarkable record. I'm gonna order a new 6 Grendel reamer next week with some changes to try. I'll shoot it and I have zero concerns with accuracy. I think I'll set it up around 220R brass and fire forming it due to not knowing when or really if Lapua will make Grendel brass again. I think they will and that all will be good again but I'm hedging my bets so that I can do either/or method. Talk to your smith buddy.

 

[txdan]

Ok, I went to my Gun Club today and tried out this no neck turn .273 neck 6PPC.

I fireformed 12 cases and then fired them again. The barrel I used was pretty old Krieger, maybe vintage 2007. But I had written on it…,”good barrel”, so it is the one that I used the neck reamer to take my .269 neck chamber out to a .273 neck.

After the 2 firings, I used a .271 bushing with my Flat Base 68 grn bullet. The loaded round had exactly .001 clearance in the neck.

This did concern me, by they were chambering easy, so what the heck.

I worked up a load with this barrel, a front had come through, humidity was really low for our area. This meant shoot it hot. Working with the load and my tuner, I got things going.

I then shot these four 5 shot groups for record, all in a switchy left to right quartering condition.

I had zero problems. Extraction was flawless. Everything worked just the way it is supposed to.

The Targets speak for themselves. I only had one shot get away on that first group, missed a let up.

The only thing you might consider if you want to shoot a “no neck turn” is maybe a .274 neck. The base of my Flat Base measures .2434, some are a tad fatter. Boat Tails are generally dead on .243.

Anyway, the no neck turn seems to work pretty darned good. View attachment 1396702

Pretty cotton picking good. Especially for Tomball.

 

[jackieschmidt]

Last night, (actually about 2:00 AM this morning), I chucked up one of my new Bartlien Gain Twist barrels and established the .273 neck in it’s chamber.
We went back to the range early this morning and fireformed 15 new cases, yhen fired them again. Since the humidity has come back, (70 degrees and muggy), I went with my regular 30.4 grns of 133. A few tuner adjustment brought the barrel in, and I then shot these three five shot groups.

Heck, I’m not sure I can even shoot this good. This combo is going in the gun case and not coming out untill The Texas State LV/Sporter at New Braunfels.
here are some pictures of this mornings range session.