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I turned my 0.25 moa rifle into a 12 moa rifle - Help!!!!

Common sense would dictate that you cut the screw seats at the same time. As they have very little purchase to begin with.:rolleyes::rolleyes: All he need is a few thousands of movement

and he has big trouble. IMHO.:D

Paul

www. boltlfuting.com


That's whey we have engineers to get beyond things that sound good. Check the bottoms of the screws and you'll be lucky to find one that is that flat. --jerry
 
12 MOA movement at 100 yards is a bunch, much more than some some screw head not quite being at the same angle as the scope rail.
Something catastrophic has happened and it's probably rather obvious. Take a deep breath, regain your composure and look at each part of this
objectively.
 
Thanks for all the good info folks. I spoke with Gary too. He was a great help. I'm going to opt for bedding with JB weld. By matching the base I opened it up to some slop in the mounting slot. While it seems tight, there is actually some space with the screws heads for movement in the horizontal plane. I just don't get how it could move enough for 12" of vertical at 100 yards with two different scopes but there is no other explanation.

I'll post results next week. I'm going to sacrifice two goats and a chicken before I bed it just for good luck.
 
What is common sense ? They don't seem to make it anymore. Larry
I know what it feels like to have gun problems but, I can't resist. I was explaining something to my grandson and told him, "it only takes common sense". He said, "grandpa, they haven't taught us that in school yet"!!! I turned my head so he couldn't see me smiling. True story.
 
I know what it feels like to have gun problems but, I can't resist. I was explaining something to my grandson and told him, "it only takes common sense". He said, "grandpa, they haven't taught us that in school yet"!!! I turned my head so he couldn't see me smiling. True story.
Not funny but is the truth . Larry
 
12 MOA movement at 100 yards is a bunch, much more than some some screw head not quite being at the same angle as the scope rail.
Something catastrophic has happened and it's probably rather obvious. Take a deep breath, regain your composure and look at each part of this
objectively.
I never have seen a gun shoot that bad. Without something being loose .
Larry
 
Thanks for all the good info folks. I spoke with Gary too. He was a great help. I'm going to opt for bedding with JB weld. By matching the base I opened it up to some slop in the mounting slot. While it seems tight, there is actually some space with the screws heads for movement in the horizontal plane. I just don't get how it could move enough for 12" of vertical at 100 yards with two different scopes but there is no other explanation.

I'll post results next week. I'm going to sacrifice two goats and a chicken before I bed it just for good luck.


12" of vertical is 12 moa or 1/5 of a degree. The tangent of .2 degrees is .0035 so movement of .00175 in 2" would give you that. --Jerry
 
These four paragraphs explain the "fix" to my rifle. After three range trips and 100 rounds of Ammo testing various mounts, scopes, etc., the gun is fixed. I drilled two holes through the mount into the receiver and pinned the mount with 1" X 1/8" roll pins. I also loaded up another 100 rounds of ammo, 50 with nosler cc 107 grain, and 50 107 g smk's.

Within three shots with the smk's I was out to 240 yards and testing for groupings. Nothing out of the ordinary. 5 shoots slightly less than 1" apart, with three shots touching. I shot another group about the same for a second group. So far so good!! Maybe the pinning did the trick!!

On to the noslers. First two shots 1" apart, third shot 6" high, next shot 4" high and 4" wide!! Man o man, it was the bullets all along. I loaded the rounds to exactly the same oal, same case prep, primers, annealing, etc.

More shooting bore out the noslers couldn't do better than around 14" at 238 yards. WTF?!? Noslers are great bullets, but apparently not with this load and at the oal on my gun.

Back to the loading table but at least I know the mount is working!!

Any ideas what is going wrong with the Noslers???!?!



 
How many rounds through your barrel? Maybe the nosler bullets are having jacket issues. I've been told when barrel starts to wear out that the thicker jacket smk bullets can give a little more life to a barrel. This was info I got for a 6-06 though
 
I am probably pushing 2000 rounds in the barrel. I am not sure what the first owner shot, but he said maybe 500. I am going to slow the load down a bit to see if that doesn't help. Right now I am at 2910 fps with 29.5 grains of Varget
 
I am probably pushing 2000 rounds in the barrel. I am not sure what the first owner shot, but he said maybe 500. I am going to slow the load down a bit to see if that doesn't help. Right now I am at 2910 fps with 29.5 grains of Varget
Save your money and get a new barrel .
But bore scope should tell . Larry
 
Measure the diameter of the Noslers. I have the 105 CC's, mine measure .2423. They shoot very well in my 6br, but they are definitely undersized in comparison to SMK's.
 
Measure the diameter of the Noslers. I have the 105 CC's, mine measure .2423. They shoot very well in my 6br, but they are definitely undersized in comparison to SMK's.


I can't measure to the 0.0001 but I can kind of guesstimate.


The smk's are 0.2431. Some might push 0.2433.

The noslers vary from 0.2398 down to a few 0.2395. Very few, but they're in the box.

The noslers are very consistant in ogive to base. The smk's not as much. Some of the smk's are noticeably not concentric as you rotate them in the micrometer jaws, and the difference can be around 0.0002.

I learned a valuable lesson through this little screw up.
 

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