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Do I need a canted base?

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  #1  
Unread 12-04-2013, 10:57 PM
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Join Date: Dec 2012
Location: Louisiana
Posts: 291
Do I need a canted base?

I've got an SWFA 6x42 headed my way and I need to get a picatinny base. According to the specs plus everything I've read on the scope, it seems there is an plenty of elevation adjustment in the scope, something around 100 MOA.

My question is, how far can I get WITHOUT a canted base? I'm shooting a 168gr match bullet at 2700fps in 308 Win. It seems like even with a 100 yard zero, this scope has enough elevation adjustment to take me out to 1000 yards.
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  •   #2  
    Unread 12-05-2013, 07:11 AM
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    Join Date: Aug 2003
    Location: NC, oceanfront
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    Re: Do I need a canted base?

    It's gonna take ~40moa from your zero, which is close, depends on where your zero puts the crosshair. But you can't hit anything with a 6x scope at 1kyd anyway.
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      #3  
    Unread 12-05-2013, 07:30 AM
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    Join Date: Jan 2012
    Location: Hot Springs, South Dakota
    Posts: 530
    Re: Do I need a canted base?

    Do you "need" it? No. If you haven't used a ballistics calculator you may want to start using one. Like the one in the banner of each page on this site. Realize that if your scope were to zero at the exact center of your adjustments, it would leave you 50 moa up and down.

    Depending on your intentions, a 6x may or may not be enough scope for your purposes. You will probably find that by the time you work yourself out to a 1000 yards you may wish you had more magnification.

    But to say, "But you can't hit anything with a 6x scope at 1kyd anyway." is very dependent on the person.
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      #4  
    Unread 12-05-2013, 07:53 AM
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    Join Date: Dec 2012
    Location: Louisiana
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    Re: Do I need a canted base?

    Thanks for the info, it's much appreciated.
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      #5  
    Unread 12-05-2013, 12:12 PM
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    Join Date: Jul 2008
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    Re: Do I need a canted base?

    Find out how many moa up you are to your 100 yard Zero. I have shot alot of 1000 yards with my 6.5-20x40 Leupold on 10 power successfully. I opt for more magnification these days, eyes are getting old. If you choose to use this 6 power for 1000 yards you should have enough travel without a moa base.
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      #6  
    Unread 12-05-2013, 12:20 PM
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    Join Date: Dec 2013
    Posts: 9
    Re: Do I need a canted base?

    It's also going to depend on your ballistics of your bullet. Some bullets will drop significantly further than others at 1k yards, meaning you will need to compensate more for that. You really need to see how much upward travel you have from your 0, and then plug your info into a ballistics calculator and see if it can do it.

    Good luck.
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      #7  
    Unread 12-05-2013, 08:36 PM
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    Join Date: Jul 2008
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    Re: Do I need a canted base?

    I ran a 168 SMK at 2700 fps on JBM. With a 100 yard Zero it will take 40.9 MOA to go to 1000 Yards. The 168 dips below 1.2 Mach around 760 yards.
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