Omark For F Open Calibre ?

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tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

Omark For F Open Calibre ?

#1 Postby tom1 » Sat Apr 16, 2022 8:38 pm

Hi I have an Omark that I rarely use as I use several other rifles for TR, one in 308 & one in 223. I have been thinking for awhile about getting this rifle set up for one of the F Class categories.
I have a new barrel adapter and given WA's licencing laws it would probably be easier to convert this rifle than to get another added to my licence. I also like to try different things out so going down the path of 308 or 223 doesn't excite me.
I realize that another calibre would require new dies etc , but I'm sure I could find those .
Also I'm not overly keen on recoil so something around the 6 or 6.5mm would satisfy me.
Now a couple of questions:
Will the Omark action be up to the pressures of a 6 or 6.5mm ?
Have any members of our forum done this ?
This project would only be used for club shoots and our range only goes back to 700 yards sadly.
Appreciate any advice given.
Cheers Brad Probert

ivan.wilson7
Posts: 11
Joined: Tue Feb 13, 2018 7:54 pm

Re: Omark For F Open Calibre ?

#2 Postby ivan.wilson7 » Sat Apr 16, 2022 9:58 pm

I have had an Omark in 260 rem running 120 gn pills with no problems, your 308 brass will re size to 260 rem in one pass through a full length 260 die. I have also shot the same rifle in 6.5x47 lap again using the 120 gn pills with great results. and if you are thinking of 6mm I have a good mate who has been running his Omark in 6 BR and its a tack driver. your shoulder will love you for it, go for it.

Weairy
Posts: 418
Joined: Tue Jul 17, 2018 1:43 pm
Location: Seymour, Vic

Re: Omark For F Open Calibre ?

#3 Postby Weairy » Wed Apr 20, 2022 11:03 am

6BR is a great choice; still a 308 bolt face, easy to tune, shares powder with the 308 (2208), components and dies aren't too extreme to get a hold of (except collet dies). I started off shooting a 6BR Barnard and it dominated the local F-Open Pennant for a couple of years. In decent conditions, it'll just about outshoot anything up to 600yd.

Coincidentally, I have a full 6BR setup for sale :lol:
Josh Weaire
Nagambie R.C.
I'm not Craig, if you want to contact him, email on c.weaire@bigpond.com

tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

Re: Omark For F Open Calibre ?

#4 Postby tom1 » Sun Apr 24, 2022 3:32 pm

Thanks for the replies, it has given me some idea of which calibre to go for. Would the 260 Rem have a bit more "legs" if I was to use it over the longer ranges ?
What is barrel life expectations with the 6BR & 260 Rem ?
Is a 6.5 x 47 Lap pushing the pressure limits of an Omark ?
Thanks appreciate any advice.
Brad

Mick_762
Posts: 235
Joined: Mon Sep 29, 2014 3:00 pm
Location: Darwin (again)

Re: Omark For F Open Calibre ?

#5 Postby Mick_762 » Sun Apr 24, 2022 8:08 pm

6mm S/LR could be another option - depending on projectile availability in Wait Awhile.
105gn pills at 3000fps is an interesting beast.
David Mickel
Darwin Rifle Club


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