Search found 711 matches

by Barry Davies
Wed Mar 20, 2019 11:22 am
Forum: Equipment & Technical
Topic: Sierra or Berger
Replies: 10
Views: 576

Re: Sierra or Berger

Yes, Lot # to Lot#. Within a Lot# about 5 thou Base to ogive with the same variation for length of parallel. That's probably acceptable and in itself does not cause problems, as with the correct measuring gauges you can batch them. The big problem is when you get large variations from Lot to Lot -- ...
by Barry Davies
Mon Mar 18, 2019 7:11 pm
Forum: Equipment & Technical
Topic: Sierra or Berger
Replies: 10
Views: 576

Re: Sierra or Berger

I have a couple of batches of Berger 155.5's with .053" ( yep 53 thou ) difference in Base to ogive. Do they shoot the same ?( all other things being equal ) no, they do not.
Worst I've had in 2156 Sierra's is .015" batch to batch, with in box variation a couple of thou.
by Barry Davies
Mon Mar 18, 2019 6:28 am
Forum: Equipment & Technical
Topic: Sierra or Berger
Replies: 10
Views: 576

Re: Sierra or Berger

My finding is less variation per box and less variation batch to batch with Sierra than Berger. Not to say one is better than the other, just less time spent retuning with Sierra. And that applies to both the 2155 and 2156. I happily use both.
by Barry Davies
Sat Mar 09, 2019 10:45 am
Forum: Equipment & Technical
Topic: If ballistics is a science ....
Replies: 42
Views: 1599

Re: If ballistics is a science ....

If you must lubricate the inside of case necks, ( I never do ) use a 308 mop impregnated with graphite powder. Leaves a light coating of graphite and powder will not adhere to it. You will probably wipe most of it away when you seat the projectile anyway but it does stop welding of projectile to cas...
by Barry Davies
Fri Mar 08, 2019 7:17 am
Forum: Equipment & Technical
Topic: If ballistics is a science ....
Replies: 42
Views: 1599

Re: If ballistics is a science ....

And therein lies the difference between what we do and what others do. We are worlds apart --to each his/her own.
by Barry Davies
Sun Feb 10, 2019 1:15 pm
Forum: Events
Topic: 2019 LRWC AND PALMA
Replies: 11
Views: 631

Re: 2019 LRWC AND PALMA

The NRAA should publicly milk this win for everything they can get.
Get Aussie shooting sports back in the limelight of sporting achievements where they belong and F*** the anti firearm lot.
Will this happen????
by Barry Davies
Sun Jan 13, 2019 4:26 pm
Forum: Equipment & Technical
Topic: throat angle
Replies: 55
Views: 2990

Re: throat angle

Do projectile designers actually perform tests with various shapes and various C of G's or do they simply design a projectile that " looks good " shape wise etc and say " well that should shoot " I am still convinced that the Sierra 2155 is more accurate than some of the later so...
by Barry Davies
Mon Jan 07, 2019 6:27 pm
Forum: Equipment & Technical
Topic: Abrasive cleaners and copper fouling
Replies: 31
Views: 2028

Re: Abrasive cleaners and copper fouling

That's why you " run in " a barrel -- to get rid of those micro scratches that are put in by lapping. If you do the run in and follow up properly, you smooth off any ( micro ) scratches that are in the barrel --result -- no, or minimal copper pick up. After " run in " and smoothi...
by Barry Davies
Mon Jan 07, 2019 5:13 pm
Forum: Equipment & Technical
Topic: Abrasive cleaners and copper fouling
Replies: 31
Views: 2028

Re: Abrasive cleaners and copper fouling

Any abrasive paste ( even the finest ) will put micro scratches on the barrel, which in turn pick up copper.
Solution--don't use abrasive paste --except in a case of " have to " ie a badly fouled barrel.
by Barry Davies
Tue Dec 25, 2018 10:16 am
Forum: Full-bore/Target Rifle
Topic: HBC 155.5
Replies: 20
Views: 4455

Re: HBC 155.5

G'day Phil.
15 thou off in one rifle 10 thou off in another.
Barry
by Barry Davies
Mon Dec 24, 2018 12:52 pm
Forum: Full-bore/Target Rifle
Topic: HBC 155.5
Replies: 20
Views: 4455

Re: HBC 155.5

Anecdotal evidence is not worth the paper it's not written on and requires taking with a grain of salt. If I had to fault any aspect of the HBC it would be the Base to ogive dimension, which to my way of thinking is a little too long, resulting in a more than necessary amount of the projectile withi...
by Barry Davies
Mon Dec 24, 2018 9:34 am
Forum: Full-bore/Target Rifle
Topic: HBC 155.5
Replies: 20
Views: 4455

Re: HBC 155.5

The HBC is of excellent quality. Having loaded many 1000's I found less that 1.5 thou variation in dimensions that matter with around 0.5 gn variation in weight, which is of little or no consequence. There is some ( up to 10 thou ) variation in ogive to base dimension from batch to batch, but again ...
by Barry Davies
Fri Nov 23, 2018 9:25 am
Forum: Equipment & Technical
Topic: Problems with CCI 450s
Replies: 49
Views: 3963

Re: Problems with CCI 450s

Insufficient striker energy and/or striker protrusion or too much head space.
by Barry Davies
Wed Nov 21, 2018 2:03 pm
Forum: Equipment & Technical
Topic: which would you recommend
Replies: 12
Views: 1157

Re: which would you recommend

If you are going to seriously shoot F Class and you cannot get something longer than a 26" barrel, then neither.
by Barry Davies
Fri Nov 02, 2018 1:45 pm
Forum: Equipment & Technical
Topic: New Barrel
Replies: 29
Views: 3543

Re: New Barrel

Had a few barrels in my career and run every one in. Consider -- almost without exception the first shot thru a new barrel will produce copious amounts of copper --and it's not all from the newly cut throat. It is evident at the muzzle in streaks. As the number of shots increases the amount of coppe...

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