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texasmac
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Comparison of Starline, Rem & Win Brass
Feb 25th, 2015 at 3:27pm
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Hey guys,

Here’s everything I know about Starline, Remington & Winchester .45-70 brass. Based on the photo and dimensions you can see why Winchester carries more capacity. Note the difference in wall thickness and the relatively sharp transition from the solid head to the walls. Also note that Rem. has slightly thicker walls than Starline. The main reason why Starline has less capacity than Remington is the design of how the head transitions to the web region.  Since a Starline case weighs more than Rem. case but has slightly thinner walls, the weight difference is in the head.  

BTW, I always deburr the primer hole in my Remington brass. Based on what I found when sectioning the cases, I’d definitely recommend deburring Win. cases. I checked several Win. new cases and the burrs in all were significantly worse than Remington or Starline. Notice the ridge sticking up in the primer hole in the Win. case. It extended 3/4 of the way around the hole. Based on what I found, Starline may not benefit from deburring.

Wayne

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« Last Edit: Feb 26th, 2015 at 2:54pm by texasmac »  
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craigster
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Re: Comparison of Starline, Rem & Win Brass
Reply #1 - Feb 25th, 2015 at 6:10pm
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good post and info, thanks. all brass is not created equal.
  
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QuestionableMaynard8130
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Re: Comparison of Starline, Rem & Win Brass
Reply #2 - Feb 26th, 2015 at 9:28am
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I wonder if there are production lot to lot variations as dies and equipment wear?  if comparing different lots of the three might show other characteristic patterns?
  
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Schuetzendave
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Re: Comparison of Starline, Rem & Win Brass
Reply #3 - Feb 26th, 2015 at 1:57pm
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Interesting presentation.

Now I have to decide if I want improved life from my cases or more velocity by packing in more powder.

But I can only get Starline cases here in Alberta for my .40-65.

Data confirms it takes more work to uniform Winchester primer holes and flash pockets.
  
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texasmac
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Re: Comparison of Starline, Rem & Win Brass
Reply #4 - Feb 26th, 2015 at 3:09pm
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Schuetzendave wrote on Feb 26th, 2015 at 1:57pm:

But I can only get Starline cases here in Alberta for my .40-65.


Schuetzendave,

That's true for the USA also.  Shooters like myself that use either Remington or Winchester for .40-65, reform .45-70 cases using a standard full length resizing die.  The main advantage is it results in a longer case that can be trimmed to perfectly match the chamber length.  As an example, my Browning .40-65 requires a 2.128" case length.  The Starline cases are around 2.097" and will likely shorten a little after firing, resulting in about a 0.030" gap, possibly more.  So I reform Rem. brass and trim it 0.010" longer (2.138") since it will shorten about .007" to .008" when fired.  After fire forming the brass gets a final trim to 2.128".  It's never full length resized again.

BTW, all my BPCR shooting is for accuracy testing and silhouette competition.

Wayne
  
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texasmac
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Re: Comparison of Starline, Rem & Win Brass
Reply #5 - Feb 26th, 2015 at 3:14pm
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texasmac wrote on Feb 26th, 2015 at 3:09pm:
Schuetzendave wrote on Feb 26th, 2015 at 1:57pm:

But I can only get Starline cases here in Alberta for my .40-65.


Schuetzendave,

That's true for the USA also.  Shooters like myself that use either Remington or Winchester for .40-65, reform .45-70 cases using a standard full length resizing die.  The main advantage is it results in a longer case that can be trimmed to perfectly match the chamber length.  As an example, my Browning .40-65 requires a 2.128" case length.  The Starline cases are around 2.097" and will likely shorten a little after firing, resulting in about a 0.030" gap, possibly more.  So I reform Rem. brass and trim it 0.010" longer (2.138") since it will shorten about .007" to .008" when fired.  After fire forming the brass gets a final trim to 2.128".  It's never full length resized again.

BTW, all my BPCR shooting is for accuracy testing and silhouette competition and I'm a firm believer the case length should match the chamber length as close as possible, certainly no more than 0.010" shorter, for maximum accuracy.

Wayne

  
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Re: Comparison of Starline, Rem & Win Brass
Reply #6 - Feb 26th, 2015 at 5:08pm
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QuestionableMaynard8130 wrote on Feb 26th, 2015 at 9:28am:
I wonder if there are production lot to lot variations as dies and equipment wear?  if comparing different lots of the three might show other characteristic patterns?

Having used all three for some years, it has been my experience that they are quite consistent. And, at the moment, consistently difficult to find new. Only the new 40-65 Starline seems to be available and it is consistently short in OAL.
  
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Re: Comparison of Starline, Rem & Win Brass
Reply #7 - Feb 26th, 2015 at 5:13pm
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Wayne,
Could you take about 10 of the Remington brass and measure the wall thickness at various spots around the neck?  What I found with the Remington brass for my 40-70SS, (stretched 30-40 Krag) that the wall thickness varied more than .002".  I ended up neck turning all of them.  It may have been caused by the stretching process.
Winchester 45-70 brass varies a lot on rim thickness but I like the way the bullet seats uniformly every time.  I never anneal my Winchester brass. 
The 45-90 Starline has to be annealed every two firings and even then, some bullets seem to seat harder than others and I think it has something to do with vertical stringing at the longer distances.  Bob
  
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