6 mm ARC Brass
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Looks like some Peterson 6 Dasher brass new there also.
I find the narrow cost savings between reloading and new has me buying new 105 black for practice, then reloading the once fired with 103 ELDX for carry. I shoot more work less and acquire brass as I go.
I do the same with brass I don't intend on loading for pure accuracy. Mostly for semi-auto duty.
I try to buy Winchester brass because it lasts tons of reloads ( I have a batch of 300 pcs of Winchester 308win brass on it's 31 st reload. Annealed every 5 or so and trimmed once it reaches 0.010" of the end of the chamber ).
Bought them new all same lot # back in 2012. I also bought Lapua 308win brass and accuracy didn't change and the Lapua brass didn't last more than 5 reloads. Maybe I was pushing the Lapua brass too hard, but I also have 243win and 7mm08 Lapua brass and it doesn't shoot any better than Winchester brass in those same cartridges.
For what it's worth,.. I'm not a BR competitor so my accuracy needs are more than satisfacotry with 1/3 rd to 1/2 moa with the odd 5-shot group in the 1/4 moa range.
Did not do a H20 test. Looking like slightly more capacity in the Starline offering, to me. Just tested with CFE223 powder to the top of the case. Starline held right at .2 grains more CFE 223. Same load in Starline brass & Hornady brass with CFE 223 under a 105 grain BTHP. Hornady was right at 30 FPS faster in my sample groups. This is virgin Starline VS 2 x fired Hornady Brass.
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Retired shooter
Gold $$ Contributor
If you would please,
What is the neck wall thickness.?
Thank you
Have a great day.
What is the neck wall thickness.?
Thank you
Have a great day.
Sampled 5 pieces. Results on the Starline is .012" neck wall thickness +/- .0005 due to runout in some instances. After deburing, this is measured with a pin micrometer or some may refer to this mic as an anvil micrometer.
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Retired shooter
Gold $$ Contributor
Thank you.
Retired shooter
Gold $$ Contributor
Just by chance does anyone know the neck wall thickness on 6.5 grendel Lapua brass.
I am looking into changeover to bushing die and mandrel for resizing in a attempt to bring down S/D
Wanted to get spare bushings if I ever get fortunate enough to snag Lapua brass.
Probably better chance of winning lottery!
Thank you.
I am looking into changeover to bushing die and mandrel for resizing in a attempt to bring down S/D
Wanted to get spare bushings if I ever get fortunate enough to snag Lapua brass.
Probably better chance of winning lottery!
Thank you.
Mine are all sized down and neck turned so I can't really tell you for sure but I am guessing right around .015 because I needed to neck turn all of mine because I have a tighter chamber and I noticed right away that when I fired a case I could not slide a bullet into the fired case because I was not getting enough neck expansion due to my chamber. So, I now just do a light skim turn on all my necks.....
Lapua 6.5 G neck thickness B4 being sized to 6mm ARC = .013"
After being sized to 6mm ARC = .0135
Hornady 6mm ARC neck thickness = .0125" +/- .0005
VS Sami print
Measuring a 25ct sample of out of the box Lapua 6.5G bought maybe 5 years ago at three points around each neck, I got a range of individual readings of 0.0128-0.0138", most in the low to mid 13s. Variance around the neck across the three readings on any one case ranged from 0.0002-0.0008", mode at 0.0005/.0006 (13 cases out of 25).
What I have found is that the shoulders are set back too far for my Howa factory chamber (8-10 thou' on the comparator against a fully fireformed example), and I've taken to fireforming new cases with a jam-seated bullet. This of course is a plus when reforming to 6mmARC. I've noticed others commenting on this and as this is IME unusual with Lapua brass, it seems to be deliberate in this case. (Safety cushion since most cases will end up in ARs built by a wide range of individuals/outfits with variable standards?)
What I have found is that the shoulders are set back too far for my Howa factory chamber (8-10 thou' on the comparator against a fully fireformed example), and I've taken to fireforming new cases with a jam-seated bullet. This of course is a plus when reforming to 6mmARC. I've noticed others commenting on this and as this is IME unusual with Lapua brass, it seems to be deliberate in this case. (Safety cushion since most cases will end up in ARs built by a wide range of individuals/outfits with variable standards?)
Retired shooter
Gold $$ Contributor
Thank you Gentlemen!
Now if I may ask from you what type of dies are you using , bushing dies, full length resizing dies, mandrels.?
My reason for asking is more consistent SD / ES , and minimal working of the brass after firing.
Not shooting competition.
Thank you again.
Now if I may ask from you what type of dies are you using , bushing dies, full length resizing dies, mandrels.?
My reason for asking is more consistent SD / ES , and minimal working of the brass after firing.
Not shooting competition.
Thank you again.
Retired shooter
Gold $$ Contributor
Thank you.
Been using Forster full length sizing die with expander ball. Forster Micrometer seating die in CoAx press .
Son and I changing to arbor press. Purchased this afternoon Whidden Micrometer arbor die, and full length sizing die, can be used with expander ball, or used with bushings. Will be researching mandrels, and die tomorrow.
Absolutely amazing what we do looking for a little better performance.
Thanks again.
Been using Forster full length sizing die with expander ball. Forster Micrometer seating die in CoAx press .
Son and I changing to arbor press. Purchased this afternoon Whidden Micrometer arbor die, and full length sizing die, can be used with expander ball, or used with bushings. Will be researching mandrels, and die tomorrow.
Absolutely amazing what we do looking for a little better performance.
Thanks again.
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