Shot 175Yards today with Omega

frontier gander · 08-08-2008, 08:07 PM

Found a great place to do 175 and 200 yard shooting. I set my target out there and marked the 175yrd spot and set up my stuff and shot off of my shooting sticks. 2 shots was more than enough to know that the big 405 Powerbelt is dropping pretty good at that distance and the 80 grain charge i use.
They grouped excellent. Right at 2 1/2" @ 175 and using shooting sticks!

I plan on trying 2 more shots at 175 with winchester 777 primers tomorrow. Today i was using remington kleanbores.

Drop, #1 shot was exactly at 13" low @ 175yrd.

POA was the 6 o'clock spot on the small circle. (big circle is for 100 yard Mountain rifle shooting)

So now my question. 3 clicks up to move it up 4" or leave it where its at? An elk has a huge side so 13" may seem like a lot but when the elk is in your scope, 13" to be is doable.

4" high @ 100 puts me 4" high at 50 and 75 yards. Its weird how that works out but its right on the money at the shorter ranges.

burntmuch · 08-08-2008, 08:21 PM

Thats some good shooting. Id leave it right there. I would think you,d be able to hold it right on the elks back, that would drop it right into the vitals.

frontier gander · 08-08-2008, 08:24 PM

exactly what i was thinking.

200yards would be if i were hunting big open fields but my area is a small field thats boardered by pines.

I'll try 200 yards tomorrow.

Underclocked · 08-08-2008, 08:54 PM

Leave it where it is and get ready for substantially more drop - use a taller target.

frontier gander · 08-08-2008, 08:57 PM

I'll switch to the 777 primer and see how it does with that one. I should be able to squeeze off 2" from the 13" drop that i have with the kleanbore primers.

gleason.chapman · 08-09-2008, 04:02 AM

http://www.powerbeltbullets.com/docs/PBB28inchballistics.pdf has this for thedrop with 150 yard zero using 100g of 777, you were using 80:

If you know the MV of your load we can drop it into here:
http://www.sav10ml.com/pages/load_data/traj_basic_dat.html

According to this chart you with 100g of 77 you need to be 5 1/4 inches high at 75 yards to get the drop in this chart. I am gonna say with 80g you bullethas the drop of 200 yards at the 175 yard point. So according to the chart you should have been-11.5 inches low at 175, which was about what you were.Anyway if you have a chrony get the ML and we can figure it outpretty close, range tests like your doing it the best. shoot 3 shots.
Chap

Rifle Loony · 08-09-2008, 06:33 AM

Quote:

ORIGINAL: frontier gander

2 shots was more than enough to know that the big 405 Powerbelt is dropping pretty good at that distance and the 80 grain charge i use.

If a couple of inches of drop is a concern, why only 80 grain charges?

More propellant, less drop..............

cayugad · 08-09-2008, 07:46 AM

Chap - I would suspect that a 405 grain bullet with only 80 grains of powder might not make that kind of velocity. This is very interesting seeing these kind of results.

sabotloader · 08-09-2008, 08:40 AM

cayugad

I shoot 90 grains of T7-3f pushing a 460 grain BS and the results that FG got @ a 175 yards are pretty much the charted results if the gun is zeroed @ 100.

Here is a Barnes chart for that load load.

frontier gander · 08-09-2008, 10:45 AM

Quote:

ORIGINAL: Rifle Loony

Quote:

ORIGINAL: frontier gander

2 shots was more than enough to know that the big 405 Powerbelt is dropping pretty good at that distance and the 80 grain charge i use.

If a couple of inches of drop is a concern, why only 80 grain charges?

More propellant, less drop..............

Recoil, It gets uncomfortable for me with those big bullets with 90+ grains. If i had open sights it would be a little better as i would not have to worry about the rifle getting away and the scope hitting me in the face