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#5833124 - 07/15/15 02:05 PM My best 200yd ever... 6.5 grendel Wolf Gold ammo
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
I was using the the bottom duplex of the scope to shoot at 200yds and it looks like I forgot that for one round and used the normal crosshair (the 5th round at the bottom), anyways Im not this good of a shooter there had to be some luck here. I have some sub moa 100yd groups ill post because I have heard about boat tailed bullets going to "sleep" at longer ranges as this group was much tighter than my 100yd groups and was wondering if this may be it. Also can someone do the magic ontarget calc to the photos for me?



200yds






100yds





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#5833261 - 07/15/15 04:06 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
Gravytrain Online   content
THF Celebrity

Registered: 01/06/11
Posts: 16921
Loc: Rowlett, Tx
Which scope are you using, is it fixed parallax?

Good shooting at 200 smile

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#5833284 - 07/15/15 04:28 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
I threw an older burris signature 6-24x and adjustable paralax on there for testing ammo, when hunting I have a cheap primary arms 4-14x FFP scope that will be mounted.

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#5833655 - 07/15/15 09:27 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Nicely done!




Going to sleep? confused2
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#5833692 - 07/15/15 09:59 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
GasGuzzler Offline
Pro Tracker

Registered: 12/15/13
Posts: 1641
Loc: Cooke County, Texas
Loses RPM?

Great job!
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#5833699 - 07/15/15 10:09 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
jbd76266 Online   content


Registered: 04/17/09
Posts: 4365
Loc: Sanger, TX
I've heard it talked about before, never really gave it much thought myself.

Good shooting though and the ontarget software is free to download

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#5833785 - 07/15/15 11:17 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
kmon1 Offline
junior

Registered: 09/27/06
Posts: 20293
Loc: Texas
Good shooting with the Grendel, might have to try that ammo in one of mine sometime.
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#5833808 - 07/15/15 11:55 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
Ive hear some boat tailed bullets spiral a bit at closer ranges and stabilize and decrease the spiraling effect at a further distance. I have no idea if its true but have heard bench rest and long range people talk about it.

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#5833814 - 07/16/15 12:00 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: jbd76266]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
Originally Posted By: jbd76266
I've heard it talked about before, never really gave it much thought myself.

Good shooting though and the ontarget software is free to download


I have a mac so I have to find a copy of windows and run it in virtualbox, I used to have windows on hear but my hard drive died a year ago and never got it re installed

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#5833864 - 07/16/15 05:36 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: San Antonio FJ
Ive hear some boat tailed bullets spiral a bit at closer ranges and stabilize and decrease the spiraling effect at a further distance. I have no idea if its true but have heard bench rest and long range people talk about it.


The bullet can loses stability, yes. But it is at the trans sonic range, where the bullet drops below the speed of sound. Instead of a spiral that the bullet would drill a hole, it begins to yaw causing it to draw a circle. For a 6.5 Creedmoor with a 140 gr A-max, a Density Altitude of 3000', and temps in the 90's, that is around 1400-1500 yards.

I'd have to run the numbers for your Grendel, but it will be give or take 1000 yards.
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#5834197 - 07/16/15 10:25 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: FiremanJG]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
people on the grendel forum are saying that 123gr amax/sst will be super sonic to about 1400yds it think they are getting a muzzle velocity of 2600 or so with 24" in barrel.

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#5834223 - 07/16/15 10:38 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
Im shooting a 20" Black Whole Weaponry barrel with polygonal rifling which is supposed to give you some extra fps over conventional rifling. I dont have a chrono but im assuming im between 2500-2600fps for the 120 wolf.

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#5834269 - 07/16/15 11:00 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
Gravytrain Online   content
THF Celebrity

Registered: 01/06/11
Posts: 16921
Loc: Rowlett, Tx
I've heard the 1400y transonic number before with Grendel and never believed it.

I think you would need like a .9 BC to do that at 2600 fps.

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#5834277 - 07/16/15 11:04 AM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
San Antonio FJ Offline
Outdoorsman

Registered: 08/18/09
Posts: 73
lol I haven't tested it so I cant say anything. I think the BC on the 123 amax is like .51 or something off the top of my head

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#5834569 - 07/16/15 01:42 PM Re: My best 200yd ever... 6.5 grendel Wolf Gold ammo [Re: San Antonio FJ]
QuitShootinYoungBucks Online   content
THF Trophy Hunter

Registered: 11/01/12
Posts: 6481
Loc: Lubbock, TX
According to Hornady's factory load numbers, the Grendel 123gr AMAX leaves at 2590 and at 500 yds is down to 1804. So over the next 900 yds it only drops 700 fps after dropping nearly 800 fps in the first 500? Hmmmm, not sure about that.
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