300 PRC CHRISTENSEN RIDGE LINE 1-8

[azrumshooter]

Good Morning, I have a huge trouble story already with this gun , to make a short story I'll get to the point.
I have it grouping 215 Berger's really well at 100 yds, I zeroed at 200 and dialed it up getting above 600 it shoots high and right , has anyone had this encounter this issue ? I'll take any remedies or thoughts to correct my issues, thank you Gents !

 

[huntinfool18]

Sounds like a scope issue to me. Once the bullet leaves the barrel it's going to continue on that path(other the wind/spin drift) it won't just magically start shooting high and right.
Are you shooting over a canyon or valley at the longer distance? Could be a updraft

 

[azrumshooter]

Sounds like a scope issue to me. Once the bullet leaves the barrel it's going to continue on that path(other the wind/spin drift) it won't just magically start shooting high and right.
made you shooting over a canyon or valley at the longer distance? Could be a updraft

Good point, it was perfect conditions its point of impact is exact every time, I'll double check my scope level again, thank you

 

[Dmagna]

I have a traverse in 300 PRC, it's a pile. I also shoot 215s, haven't stretched the legs yet. But it was extremely difficult to find anything that would shoot. I can't stand these rifles, wasted over $4000 on two of them, rebarreled one already and the 300 is on the way out soon.

 

[BillNye]

The first thing I would check would be cant on the scope. Maybe do a tall target test to check the levelness and tracking of the scope and also make sure your rifle isn't canting at all

 

[azrumshooter]

I have a traverse in 300 PRC, it's a pile. I also shoot 215s, haven't stretched the legs yet. But it was extremely difficult to find anything that would shoot. I can't stand these rifles, wasted over $4000 on two of them, rebarreled one already and the 300 is on the way out soon.

That's where I'm at, Ive had it bedded, sent back for a barrel change, changed my loads, brass, projectiles, powder, primers, hell i could have spent half for the rifle and had better results , CA say they will only guarantee to one hundred yds. I'm going to try one more thing, then ya I'll let it go!

 

[Vol1975]

tall target test as mention before.
site in at 100 dead on. Take a level and draw a vertical line 20 inches tall On that target at 100
reshoot at hundred with at least 14 inches of elevation at 100. This will tell u if your can't is off on your bubble to cross hair on scope Is off.
last is twist on a gun will account for a little at extended distance.
cheers

 

[QuietTexan]

Have you really wrung out the scope tracking?

B2B Precision sells turret tracking target packs, it includes tall target tests and a grid:

Store - Box to Bench Precision

Target Sample Pack - Snipers Hide - Ultimate Hunting Target - MOA Grid Target - Stackable - Long Range Load Development Scope Tracking Target - Elevate your precision shooting

www.boxtobenchprecision.com

I make my own version of the tall target and MOA/MIL grids using a plumb bob and target dots, but if you've never done one before starting with a printed target might make you feel more comfortable in ruling out any measurement errors on your part.

The Ultimate Hunting Target is a fun game to play also, get's you spinning turrets and can really test return to zero.

 

[azrumshooter]

tall target test as mention before.
site in at 100 dead on. Take a level and draw a vertical line 20 inches tall On that target at 100
reshoot at hundred with at least 14 inches of elevation at 100. This will tell u if your can't is off on your bubble to cross hair on scope Is off.
last is twist on a gun will account for a little at extended distance.
cheers

Good points gents I appreciate you sharing your knowledge, I'm going to shoot it this weekend and I'll share my results with you, I hadn't done the elevation 100 yd test ,

 

[Eric Musgrove]

Reticle Perpendicularity

Reticle Perpendicularity By Darrell Holland Long range shooters go through great pains to properly set-up their rifles for long range shooting. Bipods, muzzle brakes, cosine indicators and a host of other widgets often adorn their newly created...

www.longrangehunting.com

take this with you so you don't waste ammo

 

[skipglo]

Good Morning, I have a huge trouble story already with this gun , to make a short story I'll get to the point.
I have it grouping 215 Berger's really well at 100 yds, I zeroed at 200 and dialed it up getting above 600 it shoots high and right , has anyone had this encounter this issue ? I'll take any remedies or thoughts to correct my issues, thank you Gents

That's where I'm at, Ive had it bedded, sent back for a barrel change, changed my loads, brass, projectiles, powder, primers, hell i could have spent half for the rifle and had better results , CA say they will only guarantee to one hundred yds. I'm going to try one more thing, then ya I'll let it go!

Yeah....sell it to some other poor un-suspecting soul!

 

[entoptics]

Not sure how thoroughly you've tested this, or how much offset your seeing, but here's some "Food for thought", based on a few quick calcs in Ballistic, shooting 600 yds with a 200 yd zero...

Spin drift is good for 1.5" right.

1 mph wind (essentially unnoticeable) is good for another 1.25"

Shooting due north/south will add another 3/4" to the right from coriolis

1° scope can't (almost imperceptible) will add another 1" or so.

In the above scenario, not accounting for some pretty subtle variables stacks up to about 4"-5" to the right.

You can add other similarly subtle variables, (e.g. B.C. variance, aerodynamic jump, scope cant, etc) and get a few inches high pretty easy too.

 

[QuietTexan]

Reticle Perpendicularity

Reticle Perpendicularity By Darrell Holland Long range shooters go through great pains to properly set-up their rifles for long range shooting. Bipods, muzzle brakes, cosine indicators and a host of other widgets often adorn their newly created...

www.longrangehunting.com

take this with you so you don't waste ammo

To build on this read a little bit and show how easy it is for your reticle to be canted, 2.5° of error can be caused by a 34mm scope tube being misaligned by 0.74mm. For a 1" tube it's half a millimeter. Most bubble levels are only accurate to ~3-5° even if you set them up correctly with a level or plumb line. Common rule of thumb for cant induced error is 1° is 5" off at 1000 yards, which works out to 3 inches of error at 600 yards per degree. Your scope could be off by as little as a millimeter, and be either negating or compounding the variables in this ^^^ post.

What are you using for ballistic solutions?

 

[azrumshooter]

Reticle Perpendicularity

Reticle Perpendicularity By Darrell Holland Long range shooters go through great pains to properly set-up their rifles for long range shooting. Bipods, muzzle brakes, cosine indicators and a host of other widgets often adorn their newly created...

www.longrangehunting.com

take this with you so you don't waste ammo

Great test thank you, will do