Jump to content
Brian Enos's Forums... Maku mozo!

BDC Scopes


Vipers
 Share

Recommended Posts

Just a quick question about these types of scopes. I see that most are scaled to the 55 grain as compared to others. Is this a problem? Anything special you need to do to find zero or use higher grain? Thanks

Link to comment
Share on other sites

It is not necessarily a big problem, especially for typical 3 gun distances. I recommend first to find the moa or mil amount of drop for each stadia line in your scope, and then to run the numbers for your load through a ballistic calculator (such as http://www.handloads.com/calc/, many others available), and then finally doing some testing on the range to confirm what the calculator says.

For instance, I was previously using a USO SN4 with the Lund reticle. Its calibrated for the 69gr SMK @ 2850fps, but I found that my 55gr load matched up very closely out to 400 yards.

Link to comment
Share on other sites

Just a quick question about these types of scopes. I see that most are scaled to the 55 grain as compared to others. Is this a problem? Anything special you need to do to find zero or use higher grain? Thanks

You just changer your initial zero range. For example if its set for a faster bullet at 100 zero it with the 77 grainers at 200 and your 300, 400,500, 600 yard marks will line up. This is a generalization and you will need to get the actual reticle specs and chrono your load to find out for sure.

Pat

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...