Search found 91 matches

by !Peter!
Fri Sep 21, 2018 2:01 pm
Forum: General Forum
Topic: The Future
Replies: 99
Views: 2723

Re: The Future

This is great discussion, I hope it translates to the beginning of meaningful change. If I may add my perspective as someone who has shot at grass roots level in several countries other than Australia. It has been mentioned in a previous post that the strictness of Australian gun laws encourages par...
by !Peter!
Tue Sep 11, 2018 1:12 pm
Forum: General Forum
Topic: importing into QLD
Replies: 3
Views: 325

Re: importing into QLD

Thanks Roger, I should have been more specific in that I'm looking to import from outside of Australia.
by !Peter!
Sat Sep 08, 2018 5:48 am
Forum: General Forum
Topic: importing into QLD
Replies: 3
Views: 325

importing into QLD

Hi all,
I would like chat with someone offline about the details of importing firearms and related stuff into QLD. I'm familiar with the forms and process but want to chat with someone with recent experience so that I do and say the right things and avoid complications.

Thanks
!Peter!
by !Peter!
Tue Sep 04, 2018 11:38 am
Forum: Equipment & Technical
Topic: Does a plastic tip , mean I can get away with a slower twist ?
Replies: 17
Views: 641

Re: Does a plastic tip , mean I can get away with a slower twist ?

Graham,
The JBM screen shot you posted jogged my memory about a third paper from Courtney on twist, so I did some digging found it and a spreadsheet to calculate it. I haven't verified the spreadsheet.

Enjoy!
!Peter!
by !Peter!
Sat Sep 01, 2018 9:41 pm
Forum: Equipment & Technical
Topic: Does a plastic tip , mean I can get away with a slower twist ?
Replies: 17
Views: 641

Re: Does a plastic tip , mean I can get away with a slower twist ?

Graham, FWIW, I've attached some work on modifying the Miller stability formula for plastic tipped bullets by Michael Courtney & Don Miller. So, if you're now known as the Gman does this mean that where you're standing is called the Gspot? :-k Sorry couldn't help myself :lol: I really tried! !Pe...
by !Peter!
Fri Jul 27, 2018 6:25 am
Forum: Equipment & Technical
Topic: Silver Mountain SOLO ET's
Replies: 33
Views: 2350

Re: Silver Mountain SOLO ET's

Thanks again for posting that detail.
by !Peter!
Fri Jul 27, 2018 5:18 am
Forum: Equipment & Technical
Topic: Silver Mountain SOLO ET's
Replies: 33
Views: 2350

Re: Silver Mountain SOLO ET's

Thank you Daniel for that detail.

Am I correct in concluding that all external acoustic targets are going to be susecptable to lost shots due to the "deadtime" / "recovery time" inherent in the sensors?
by !Peter!
Wed Jul 25, 2018 8:26 am
Forum: Equipment & Technical
Topic: Using CLR to clean barrels
Replies: 7
Views: 834

Re: Using CLR to clean barrels

I posted this in the thread about carbon removal: I happened to have a rifle sitting on the work bench that I was about to use JB to remove a carbon ring so I gave CLR a go. Half a dozen strokes with a wet patch, let it sit for 30min, clean out and carbon ring gone. I should have taken photos from t...
by !Peter!
Sun Jul 01, 2018 11:40 pm
Forum: Equipment & Technical
Topic: Carbon cleaning methods curious after borescoping club barrels
Replies: 22
Views: 1632

Re: Carbon cleaning methods curious after borescoping club barrels

I saw over on accurate shooter about using CLR. I happened to have a rifle sitting on the work bench that I was about to use JB to remove a carbon ring so I gave CLR a go. Half a dozen strokes with a wet patch, let it sit for 30min, clean out and carbon ring gone. I should have taken photos from the...
by !Peter!
Mon Jun 18, 2018 10:38 am
Forum: Equipment & Technical
Topic: LabRadar Bluetooth app now available
Replies: 10
Views: 850

Re: LabRadar Bluetooth app now available

One little thing I noticed was that the Labradar gave no indication that the firmware had been updated other than new firmware numbers on the boot screen and the firmware files deleted from the SD card.
by !Peter!
Sat Jun 16, 2018 12:19 am
Forum: Equipment & Technical
Topic: What calibre?
Replies: 13
Views: 999

Re: What calibre?

John23 wrote:If you want a little more bang look at the 6bra
Same 6br die sets just the shoulder moved forward.

Do you mean 6BRX rather than 6BRA?
by !Peter!
Wed Jun 13, 2018 11:01 pm
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4737

Re: Barrel Behaviour Theory

Has anyone thought also about the negative pressure vacuum that is created which also causes mass turbulence as the projectile leaves the barrel? Or is this an unknown to you guys? After the muzzle blast there’s also a massive drawback into the muzzle. Don’t know if it will be relevant or if anyone...
by !Peter!
Sun Jun 10, 2018 11:59 pm
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4737

Re: Barrel Behaviour Theory

Peter sorry if my posts seem argumentative they are not intended to be. My written communication leaves lots of room for improvement. I have an electrical / electronic background and have dealt a lot with harmonics on the power grid. I understand the higher frequency has more energy for a given amp...
by !Peter!
Sun Jun 10, 2018 4:08 am
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4737

Re: Barrel Behaviour Theory

One more thing I should add, in the physics classroom they make an over simplification when they say the energy in a wave is proportional to it's amplitude. The energy in a wave is proportional to it's amplitude and frequency. So a higher frequency wave will have more energy than a lower frequency w...
by !Peter!
Sun Jun 10, 2018 1:13 am
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4737

Re: Barrel Behaviour Theory

.... It is why everybody is trying to design stocks that recoil directly back parallel to the aimed point. ... The barrel profile would be a consideration and why another reason why thick barrel profiles are preferred due to their resistance to bending forces. ... Depends what your goal and strateg...

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