BH209 charge and Nikon Omega BDC Scope

flybub · 12-09-2008, 09:36 AM

Hey all. While I'm waiting on my scope to arrive I figured I'd do some searching on what kind of charge to use. I have both BH209 and 777 loose. I know every rifle is going to be different but my question is what amount of loose powder will get me close to that 150 gr. charge that the Omega scope requires. I know I can always use a lower charge and adjust the reticle on my target accordingly depending on my groups. I am using a 240 gr. HP/XTP bullet out of my Pro Hunter. I have only been able to shoot with open sights and the farthest I've shot is 50 yards and that was with 90 gr. BH209, Win. 209 Primer, and the 240 gr. XTP. What is considered a magnum charge with loose powder? 3 50 gr. pellets is considered 150 gr. but I also know that loose tends to burn hotter and gives you more of a balanced charge than pellets. I'm bored at work and thought I'd throw this out to all you gurus. This is for hunting only and I have considered going to pellets simply for the speed of the reload but what fun would it be to sight in using a premeasured pellet

revpilot · 12-09-2008, 09:49 AM

flybub

I would drop bigdadjk a pm, he has that bdc mastered with 90g of bh209 out to 200yds. I wouldnt ofbeleived the groups he was gettingout to200 yds until i went and shot with him. He has it on top of a triumph.

flybub · 12-09-2008, 09:55 AM

I'll do that rev. Thanks for the info.

SWThomas · 12-09-2008, 11:05 AM

I wouldn't try to dictate things with the powder. I would just use the amount of powder that allows your rifle to group well and then use range time to tell you which marks are used for certain yardages.

spaniel · 12-09-2008, 12:18 PM

More important than the charge is the bullet. That reticle is set up for the 250gr Shockwave only. Changing bullets will mess things up and you won't get a match to the reticle. At least the powder you can substitute anything you want as long as the muzzle velocity matches, not so with the bullet.

lemoyne · 12-09-2008, 04:09 PM

My rifle [Triumph] happens to shoot one hole groups with the 120 gr charge it also shoots very close to DC on the BDC of the Nikon Omega scope. The components in case you would like to know
120 gr bh209 by the TC clear view measure
Short Black Harvester sabot
250 Shock Wave
Win 209
I have shot some very good groups with this load, the average is slightly under a minute of angle.
Lee

gleason.chapman · 12-09-2008, 07:20 PM

Quote:

ORIGINAL: SWThomas

I wouldn't try to dictate things with the powder. I would just use the amount of powder that allows your rifle to group well and then use range time to tell you which marks are used for certain yardages.

+1. Well said. Chap

dmurphy317 · 12-09-2008, 10:11 PM

If your wanting to duplicate the load conditions that Nikon used for the BDC scope you need to find the powder load that puts a 250 bullet with similar characteristics to the SW out the muzzle at about 2050 fps. That is the velocity range they used when developing the reticle.

For me, I would just find the most accurate load for the bullet and powderyou prefer and then verify at the range at what distance each aiming point matches up to.