future fopen chamberings?

Get or give advice on equipment, reloading and other technical issues.

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macguru
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Post by macguru »

I agree that number one you have to have an accurate rifle/load combo and know how to shoot. Last saturday in sydney there were moderate flukey wind gusts in our faces that were difficult to judge. Here are some results from 400m, ALL these shooters shot at least one possible at 300m the week before so the general setups are pretty good (names deleted :)):

Shooter 1 6.5x47 lapua 130gr VLD BC .552 119/120
Shooter 2 6mmBR 105gr VLD BC .493 115/120
Shooter 3 308win 155gr Bhybrid BC .483 112/120
Shooter 4 308win 155gr sierra BC .449 110/120
Shooter 5 308win 155grAmax BC .435 109/120

Does anyone else see a pattern here. I am NOT saying its the be all & end all i just think its interesting enough to post here. Conditions were consistently annoyingly unstable for over 2 hrs.
Brad Y
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Post by Brad Y »

macguru wrote:I agree that number one you have to have an accurate rifle/load combo and know how to shoot. Last saturday in sydney there were moderate flukey wind gusts in our faces that were difficult to judge. Here are some results from 400m, ALL these shooters shot at least one possible at 300m the week before so the general setups are pretty good (names deleted :)):

Shooter 1 6.5x47 lapua 130gr VLD BC .552 119/120
Shooter 2 6mmBR 105gr VLD BC .493 115/120
Shooter 3 308win 155gr Bhybrid BC .483 112/120
Shooter 4 308win 155gr sierra BC .449 110/120
Shooter 5 308win 155grAmax BC .435 109/120

Does anyone else see a pattern here. I am NOT saying its the be all & end all i just think its interesting enough to post here. Conditions were consistently annoyingly unstable for over 2 hrs.


Definitely see a pattern. And if the 6.5x47L shooter pointed his/her bullets it might have been another possible :lol:

Sorry couldnt help myself
Matt P
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Post by Matt P »

It wasn't that far out, just need to read the wind better, common problem really :lol:
Matt P
XCALIBRE
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Future F Open Chamberings.

Post by XCALIBRE »

I absolutely enjoy Wildcatting. Started with a 243 and then tweaked it down to a 6X, thought it could do better so shortened it to a 6X50 witha 1/2 inch neck, added a 40* shoulder and it increased the same bullet/powder load by 142 fps.! Opened it out to 6.5 and hey presto, the ducks nuts. Especially with the large primer pocket! (this was before Lapua) Then built a shortened (5/16") 6.5-284 and 6-284 but found it took an extra 4-5 grains/ powder to attain what the little ones could already do.. Realised then that there is a limit to effiecency level of bullet /powder weight. We have the capacity to shoot out to 1100mtrs. up here so one can really push the envelope as to what happens where. Two things I found required for accuracy from a rifle is a soft launch start and what I call bullet design speed. We all go for maximum performance but miss out on score. Why? because they don't go together. For years I chased my tail with multitudes of various powders, loads and bullets and recorded targets, speeds notes and cross checks and could not nut it out. Finally I came across a bloke in the US. who had spent a fortune in shooting thousands of rounds of most useable calibres that included bullet weights, loads and speeds. He made no claim, no opinion but just printed out his spread sheets of what he had found. All he did was was underline the most accurate bullet weight and speed for that paticular calibre. Surprisingly I observed they were mostly in ths 2884 fps. range. Now I take a step back and reduce loads after watching Peter Smith from North Qld. who takes great delight in catching people out by dragging his 6.5 Rogue rifle along the range by the butt or carries it by his home made rifles scope. He then lays down and wops the crap out of all 'F Open' contenders in most Qld. events. Guess what his bullet speed is?
So what I'm really saying is no matter what you shoot, back off a bit and concentrate on condition, then enjoy your shooting.
Or become a Wildcatter!!
F TROOP, SHOOTING F CLASS.
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