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View Full Version : Will 69 grain Sierra BTHP matchkings + a 24 inch 1:9 upper take me to 500 yards?


Solidsnake87
05-26-2008, 9:16 PM
Will 69 grain Sierra BTHP matchkings + a 24 inch 1:9 upper take me to 500 yards accurately?? Just want to be sure before I finalize a list of goodies to buy.

ocabj
05-26-2008, 9:19 PM
Discounting wind, there's no reason you can't shoot MOA or better groups at 500 with a 69gr SMK.

1lostinspace
05-26-2008, 9:28 PM
yes you still have not called me It hit the 600 plates at Angeles all day with 60Vmax so 69 is no problem

beast556
05-26-2008, 9:42 PM
You should have noproblems as long as you do your part. Even with lighter bullets you shoulnt have to much of a problem.

Blacktail 8541
05-26-2008, 9:49 PM
Discounting wind, there's no reason you can't shoot MOA or better groups at 500 with a 69gr SMK.

+1 / and if you learn to read the wind, you should be able to do it rather consistantly even with a stiff wind.

randy
05-26-2008, 10:37 PM
I watched bear308 hit a 14" target at 500 yards during a match from an awkward shooting position. He did it on two seperate runs and hit it with the first shot each time. Using 55 grain out of a 16" barrel with a Leupold Mk2?1.5 to 5 power scope.

Prc329
05-27-2008, 8:17 AM
Slightly different situation since it was a bolt gun but I had a 1-9 Savage 10fp that would throw the 69g SMKs to 600 yards with good accuracy from a 20" barrel.

Jicko
05-27-2008, 8:20 AM
Will 69 grain Sierra BTHP matchkings + a 24 inch 1:9 upper take me to 500 yards accurately?? Just want to be sure before I finalize a list of goodies to buy.

Theoretically yes. (had a similar setup, and was doing that a couple of days ago)

6mmintl
05-27-2008, 10:32 AM
Try hornady or Sierra 77 grain bullets, much better wind deflection value.

Prc329
05-27-2008, 10:35 AM
Try hornady or Sierra 77 grain bullets, much better wind deflection value.

YMMV with a 1-9. I have not had much issue but you may not be able to stabilize them in a 1-9. Try the hornady A-Max 75g.

Blacktail 8541
05-27-2008, 11:18 AM
Was shooting out at 700yds today with 69 nosler CC and had very little problem hitting cantalope size rocks consistantly. Consistantly to me is 8 out of 10 rounds or better.

NRAhighpowershooter
05-27-2008, 11:19 AM
Try hornady or Sierra 77 grain bullets, much better wind deflection value.

The 77's might not work with a 1-9 barrel..... I found out the hard way at the State HighPower Championships at the beginning of May at Coalinga, why all the HighPower shooters use 77's at the 300yd rapid prone stage.......

Jicko
05-27-2008, 11:27 AM
With a 24" 1x9 barrel.... 77gr is likely to work..... JUST becuz of the 24"... and the added velocity....

77gr will not likely to work on a 20", 18", 16" barrels tho...

ocabj
05-27-2008, 11:43 AM
I found out the hard way at the State HighPower Championships at the beginning of May at Coalinga, why all the HighPower shooters use 77's at the 300yd rapid prone stage.......

No kidding. Variable wind during 300 yard rapids can destroy you. You've got a 7" 10-ring (and 3" X-ring), and even with 77s @ 2750fps MV, you're looking at just under 1" of wind drift on target per 1mph of full cross wind. Sometimes your best bet is to crank windage for the weak side and play the odds that you are safesiding enough such that a pick-up in the wind during your rapid string keeps you within the 10-ring on the strong side.

NRAhighpowershooter
05-27-2008, 11:53 AM
No kidding. Variable wind during 300 yard rapids can destroy you. You've got a 7" 10-ring (and 3" X-ring), and even with 77s @ 2750fps MV, you're looking at just under 1" of wind drift on target per 1mph of full cross wind. Sometimes your best bet is to crank windage for the weak side and play the odds that you are safesiding enough such that a pick-up in the wind during your rapid string keeps you within the 10-ring on the strong side.

I had the wind called.. but with 69's My group was centered but it opened up to the 8 ring :(

Stormfeather
05-27-2008, 7:06 PM
as many here have said, yes, easily. 55 gr out of a 20" can hit accurately at 500 meters.

ar15barrels
05-28-2008, 10:28 PM
Discounting wind, there's no reason you can't shoot MOA or better groups at 500 with a 69gr SMK.

How do you discount wind when it's there?

We were holding nearly 10 MOA at 890yds at Pala last weekend.

ocabj
05-28-2008, 10:47 PM
How do you discount wind when it's there?

We were holding nearly 10 MOA at 890yds at Pala last weekend.

Theoretically, assuming a bullet stays supersonic at a specific distance, there's no reason it won't hold MOA or better groups at that specific distance assuming the barrel is good and the load is good.

Wind is an external factor and shouldn't be counted when talking about the inherent accuracy of a round.

The scope of the question is, will the 69 shoot accurately at 500 yards. A simple answer is yes. A simple answer could also be no.

A longer answer would have been, it can be accurate at 500, but it won't holdup well in real-life conditions. I could go into a long discussion of using a heavier bullet like an 80gr, but then that would delve into faster twist barrels.

There are people who will argue that a 16" barrel shooting 55gr M193 is accurate out to 600 yards and I've seen some targets that, assuming they are not being misrepresented, show that even a 55gr FMJ will shoot fine at mid-range.

But if we want to make the original poster feel bad, we can just say that the 69gr isn't enough and won't hold groups at 500 yards and that he'll have to get a new barrel with a 1:8" or faster twist rate and switch to 77gr BTHP Sierra/Nosler/Lapua/Berger, 73gr Berger, 75gr Hornady BTHP or A-Max, or 80gr+.