Starline and Peterson 6br brass coming

[mikeeg02]

@Stan Taylor
What's the capacity indifference between the two?
(from equal length cases / or near equal)

I will check the water weight tommorow an tell you the volume difference that's at 300 yards by the way.

Ill be curious to see what your results are, but I just turned two pieces of Peterson, annealed and fired them into my lucky stump.
Virgin oal was 1.552.
Once fired oal was 1.546

Both pieces held 38.34 grains of water. One flickered 38.32-38.34


The lapua piece has somewhere around a bazillion firings (probably closer to 16) Its also slightly longer. As I trim them to 1.5575"

It held 39.3 grains of water. Looking forward to your results.

 

[Stan Taylor]

Ill be curious to see what your results are, but I just turned two pieces of Peterson, annealed and fired them into my lucky stump.
Virgin oal was 1.552.
Once fired oal was 1.546

Both pieces held 38.34 grains of water. One flickered 38.32-38.34


The lapua piece has somewhere around a bazillion firings (probably closer to 16) Its also slightly longer. As I trim them to 1.5575"

It held 39.3 grains of water. Looking forward to your results.

I fired to set chamber my case isn't improved straight 6br I will weigh tomorrow it won't have all the extra numbers you have in your weight I don't own one of those expensive scales LOL.

 

[Dusty Stevens]

I have a neck reamer you can use to make that a Dasher long neck!

I got a 273 neck reamer. All i need is a throating reamer (seriously i do need a 6mm throater)
We can call it the 243 turtleneck

 

[Dusty Stevens]

I don't own one of those expensive scales LOL.

How can you even go to a match?

 

[Stan Taylor]

Ill be curious to see what your results are, but I just turned two pieces of Peterson, annealed and fired them into my lucky stump.
Virgin oal was 1.552.
Once fired oal was 1.546

Both pieces held 38.34 grains of water. One flickered 38.32-38.34


The lapua piece has somewhere around a bazillion firings (probably closer to 16) Its also slightly longer. As I trim them to 1.5575"

It held 39.3 grains of water. Looking forward to your results.

I weighed the once fired lapua at 38.6 grains of water and the Peterson was 38.4 grains of water my overall length before firing on the Peterson was 1.548 long and 1.550 after first firings.

 

[mikeeg02]

I weighed the once fired lapua at 38.6 grains of water and the Peterson was 38.4 grains of water my overall length before firing on the Peterson was 1.548 long and 1.550 after first firings.

Maybe I'll have to turn a new piece of lapua and see if maybe the new piece has less capacity before it stretches after a ton of firings. Thanks for posting your results !

 

[tom]

@Stan Taylor

You need more digits!




Tom

 

[mikeeg02]

@Stan Taylor

You need more digits!


View attachment 1128365

Tom

That's just too many. When a mouse farts outside your reloading room that scale would flicker.

Lol

The ones that are still alive.

 

[Stan Taylor]

@Stan Taylor

You need more digits!


View attachment 1128365

Tom

You can't donate to me for a early Christmas present.LOL

 

[benchrest]

oooooo, ahhhhhhhh!

results look promising so far on the Peterson.

next up, primer pocket longevity? will they hold up like the lapua?

if i was Peterson, i would've thrown these on the market with an intro price of $70ish per 100
(let people start to like them, then gradually build up to the lapua price)

 

[mikeeg02]

next up, primer pocket longevity? will they hold up like the lapua?

On first fit they feel a little different. I pushed 205s in and they felt good then like a snap. Not sure if the bottom opens up or what. Ill try to get a better feel for it. Just gotta go turn a few and shoot them a few times.

 

[urbanrifleman]

oooooo, ahhhhhhhh!

results look promising so far on the Peterson.

next up, primer pocket longevity? will they hold up like the lapua?

if i was Peterson, i would've thrown these on the market with an intro price of $70ish per 100
(let people start to like them, then gradually build up to the lapua price)

Obviously this is true. Wholesale for Peterson 6xc is something like 45 cents. Someone is being ambitious here. Probably the people like Grafs that are tired of making 10 cents on Lapua. It's not their fault.

 

[LitLBoy]

Have only fire formed, but my Peterson 6BR is VERY uniform.LitLBoy

 

[dmoran]

Let's see case dimension specs to them:

• case head diameter (micrometer)
• base/webbing diameter (widest measurement you get with a micrometer)?
• diameter at the shoulder? (caliper or blade micrometer)
• neck-wall thickness average (ball mic)
• primer pocket diameter (pin gage)?
• flash-hole diameter (pin gage)?
• average OAL?

I'll even provide a dimensions blue-print, you fill in the dimensions (attached below):



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[mikeeg02]

Let's see case dimension specs to them:

• case head diameter (micrometer)
• base/webbing diameter (widest measurement you get with a micrometer)?
• diameter at the shoulder? (caliper or blade micrometer)
• neck-wall thickness average (ball mic)
• primer pocket diameter (pin gage)?
• flash-hole diameter (pin gage)?
• average OAL?

I'll even provide a dimensions blue-print, you fill in the dimensions (attached below):

View attachment 1128618

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D@mn you ask a lot, and you're lucky I just got a set of pin gauges.

The .063 pin gauge measures .06260". My .064 did not fit, it measures .06370" (Flash hole)

The .172 pin gauge measures .17175". My .172 did not fit, it measures .17260" (primer pocket)

 

[dmoran]

@mikeeg02 .... SWEET ..... Thank You

Kind of figured you may be one to come through with specs !.!.!

PS: now talk that tight-ass @tom into getting a pin gage set to. He's been on the cheap for to long

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[mikeeg02]

You're just lucky I hadnt turned them all yet lol. Sorry I have such cheap pin gauges. But I do have a nice mitutoyo digital mic. Hense the pin gauge measurements.

One thing I did notice the first couple I turned, towards the edge they do seem to thin out a little bit. Maybe the last .065"

Off to fire form some tomorrow.

 

[mikeeg02]

Updated to add the fields I forgot. Was busy turning brass to form at the ground hog match tomorrow.

 

[dmoran]

^^^^^ Thanks very much Mike !.!.!

 

[Stan Taylor]

D@mn you ask a lot, and you're lucky I just got a set of pin gauges.

The .063 pin gauge measures .06260". My .064 did not fit, it measures .06370" (Flash hole)

The .172 pin gauge measures .17175". My .172 did not fit, it measures .17260" (primer pocket)

View attachment 1128628

I have ground pin guages an
.065 pin guage will go and .066 will not .065 is a snug fit.