Calculated velocity change caused by a single granule of Varget in a .308/175gr.

[BoydAllen]

On the neck cleaning thing, I know of a Hall of Fame (NBRSA 100-200 yd.) shooter that determined by testing that cleaning his PPC necks was counterproductive, so he does not...at all. Currently he owns four world records, both single group and aggregate. So often people assume and reason out things rather than test.

 

[fguffey]

http://bulletin.accurateshooter.com/2009/05/ken-brucklacher-sets-1000-yard-score-record-100-8x/

Brucklacher used Norma .300 Weatherby brass “right out of the box”. You read that right… Ken set the record with brand new Norma brass with no case prep whatsoever. He didn’t touch the flash holes or primer pockets — in fact Ken didn’t even chamfer the case mouths. This was brand new brass, not fire-formed. According to Ken, he “just added a primer, filled the cases with powder, and shoved in a bullet.”

I like the part where it says "You read that right…".

F. Guffey

 

[Steve Blair]

On the neck cleaning thing, I know of a Hall of Fame (NBRSA 100-200 yd.) shooter that determined by testing that cleaning his PPC necks was counterproductive, so he does not...at all. Currently he owns four world records, both single group and aggregate. So often people assume and reason out things rather than test.

[br]
Conversely, some folks (not you, Boyd) think that whatever works for the 6 PPC at short range with stubby bullets is correct for all cartridges. Long range competitors shoot bullets longer than the PPC case in freebores well over .25". It is worth noting that what works in one cartridge and discipline is not necessarily applicable to another.

 

[BoydAllen]

I absolutely agree. My friend made his choice after careful testing, which is always my recommendation. On the other hand, I think that there are some clean obsessed reloaders who have not done the testing for their particular situation. My point was to get them to question whatever assumption that they might be operating under, and consider an alternative approach.....for testing.

 

[aj300mag]

So often people assume and reason out things rather than test.

I've shot with and have scored the targets of the people I'm refering to. That's enough proof for me.

 

[Cujo]

I think case volume is has more of a difference then one kernel of powder.

FWIW, at my last F Class match, one guy was fire forming 6 BR into 6 Dasher. The first relay was at 300 yards and he shot a 200-9X. I wouldn't have believed it but I was the one keeping his score.

 

[fguffey]

If you had two extra kernels and the case had more volume would they cancel each other out?

Webster, good question, at some point in time someone has to decide why the case capacity/volume is different.

F. Guffey

 

[fguffey]

http://bulletin.accurateshooter.com/2009/05/ken-brucklacher-sets-1000-yard-score-record-100-8x/

Brucklacher used Norma .300 Weatherby brass “right out of the box”. You read that right… Ken set the record with brand new Norma brass with no case prep whatsoever. He didn’t touch the flash holes or primer pockets — in fact Ken didn’t even chamfer the case mouths. This was brand new brass, not fire-formed. According to Ken, he “just added a primer, filled the cases with powder, and shoved in a bullet.”

I like the part where it says "You read that right…".

F. Guffey

And that was it, no questions, nothing to add. Nothing about the bench resters shift to full length sizing as in all you have to do is do like the bench rest shooter?

F. Guffey

 

[Brians356]

And that was it, no questions, nothing to add. Nothing about the bench resters shift to full length sizing as in all you have to do is do like the bench resater?

My apology, a bit too early in the day for me to translate that. Perhaps too early on your end as well?

 

[fguffey]

My apology, a bit too early in the day for me to translate that. Perhaps too early on your end as well?

Translate? I was told all I had to do was reload like a bench rester, then I was told bench resters started full length sizing their cases. My response was 'FANTASTIC!'.

I like the part where it says "You read that right…".

Ken Brucklacher did nothing to prep his cases, testing? He did not purchases Federal GMM ammo, nothing is said about the difference between the chamber and case dimensions before firing. Nothing is said about measuring the cases before and again after firing. Nothing is said about the effect the chamber had on the case when fired. Nothing is said about neck sizing the fired cases, loading, then firing them again. No comparison was made. No forming, no fire forming.

If I cut a chamber I know the length of the chamber from the shoulder/datum to the bolt face in thousandths. When I chamber a round in a chamber I know the difference in length between the chamber and case from the shoulder of the case to the case head.

Back to the difference in dimensions between the chamber and case. It makes a difference and full length sizing with total disregard for the chamber dimensions is a bad habit.

F. Guffey

 

[Brians356]

My apology, a bit too early in the day for me to translate that. Perhaps too early on your end as well?

Translate? I was told all I had to do was reload like a bench rester, then I was told bench resters started full length sizing their cases. My response was 'FANTASTIC!'.

There, you're back with us. A good night's sleep does wonders.

 

[Rocketvapor]

For a 22 Nosler I get 10 to 12fps per tenth (with a Garmin) using SB6.5.
I wonder if that's close to what F-T/R .223 shooters get.

 

[fkimble@charter.net]

A 2015 thread back from the dead. There should be a big red display on the last entry in old threads advising the reader to check the date before replying!

Frank yea I've done it once or maybe twice!