AusVarmint

macca wrote: ↑Sat Oct 26, 2019 5:42 pm Says Goulburn,hmmm might have to check this out.
A $620 potential tomato stake or a great pleasant surprise.
cheers

mistit wrote:

macca wrote: ↑Sat Oct 26, 2019 5:42 pm Says Goulburn,hmmm might have to check this out.
A $620 potential tomato stake or a great pleasant surprise.
cheers

Trev
You try an ibi and let me know if it makes tomato stake grade and Macca you be the rest pilot for cheetah
I like the sound of this

kickinback wrote: ↑Sun Oct 27, 2019 6:35 am

mistit wrote:

macca wrote: ↑Sat Oct 26, 2019 5:42 pm Says Goulburn,hmmm might have to check this out.
A $620 potential tomato stake or a great pleasant surprise.
cheers

Trev
You try an ibi and let me know if it makes tomato stake grade and Macca you be the rest pilot for cheetah
I like the sound of this

I have 2 ibi barrels and will be getting some more


Sent from my iPhone using Tapatalk Pro

mistit wrote:

kickinback wrote: ↑Sun Oct 27, 2019 6:35 am

mistit wrote:

macca wrote: ↑Sat Oct 26, 2019 5:42 pm Says Goulburn,hmmm might have to check this out.
A $620 potential tomato stake or a great pleasant surprise.
cheers

Trev
You try an ibi and let me know if it makes tomato stake grade and Macca you be the rest pilot for cheetah
I like the sound of this

I have 2 ibi barrels and will be getting some more


Sent from my iPhone using Tapatalk Pro

Gday kicken
How accurate is accurate I am genuinely interested to here more about them

Tony Z wrote: ↑Sun Oct 27, 2019 10:53 pm As for performance, i can't speak for IBI or Cheetah, but my Bergara 6mm at the inaugural Mackay Fly in March won HG score at 256.x, high card at 57.2 along with a bunch of good groups, the smallest at 1.4xx" in switching winds and dreadful mirage. My error in the first target (35) in the very best conditions of the day cost a 270+ score. I put that down to not shooting a Fly match for over ten years and poor sighter management that cost me rather than blame barrel performance. Either way, the latest Bergara barrels, those since Ed Shilens' involvement are as good as i have seen and this current one i have is limited only by my ability. Both barrels were $400 each delivered, 6mm, 8 twist, 28 inches long at 1.25" parallel. Groove was 0.2430", bore was 0.2369" measured using Deltronic pins. Both were identical from end to end and are testimony to the CNC honing quality used by the factory.
They are a bit more expensive now and are still very good value but what is brought into the country is somewhat limited in profiles and calibers when i last looked.
The first barrel i had shot tiny groups from its very first outing as can be seen in the thread i put up about it. The second barrel shoots as well but has still not been fully sorted due to time. It showed enormous potential at a recent 600 match where it looks like it will perform better than the first barrel. To be fair, the first barrel was a learner barrel.

If you search the thread, there is a pic of 5 bullets shot at 600 yards with the first barrel. SMKs, Bergers, RDFs, Copperheads and BIBs. No group was over 2 inches with the one powder charge weight of Re15. That is about as good, or friendly, a barrel gets.

Load at the Fly was first barrel in the 636 with 105 RDFs, 34.5 grains Re15, RWS Sinoxid 4033 primers in Lapua cases. The load at 600 is considerably different in the second barrel with 36 grains of Re16, 103 Copperheads and the 450 primer in Lapua cases.
Below is one of the Mackay Fly groups showing exactly how mirage splits groups. Part of life up here.

Tony Z wrote: ↑Tue Oct 29, 2019 7:37 am Yes it's not about the tooling or the machining or the skill of the machinist. It's about the lapping when it comes to barrels. To this day Neville laps every barrel that MADDCO sells and i believe no-one else does it or knows how it's done.