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22-250 shooting left with reloads

6328 Views 41 Replies 16 Participants Last post by  raptor5618
I am fairly new to reloading but wonder how this could have anything to do with the bullets I loaded. Lots of variables because gun is new Savage varmiter with a Weaver Grand Slam 4.5x-14x 40mm scope. First round, I shot Remington factory loads with hollow points 50 gr.

I got it to shoot OK but newness of gun and especially the trigger led me to think most of the error was of my own doing. I checked the scope for level and found it to be a bit off so adjusted that.

Went to the range with Rem ammo and first shot understandable was off from the adjusting I did. Dialed in the change and fist shot just a bit right of center dot. Second shot touching on the high side. Satisfied it was dialed in properly.

First shot with reload of 36gr Varget using hornady v-max 50 gr head a bit low but almost two inches left. The wind was pretty strong and had shifted some from in my face to maybe 2:30. Fired again and this bullet hit at the same height abut a little bit more left maybe 1/4 or 1/2 inch. I thought it had to be the wind.

Then tried same bullet and head with 36.5 Varget. This bullet hit at the same height as the factory loads but once again was left. Second one left a bit more.

I gave up thinking the wind was just too much and it was cold as **** too.

When I got home went to the Winchester site and to their ballistic table. At 100 yards the wind pretty much has no impact at all.

I weighed each charge with two scales to make sure I was exactly on the number. I mic'd each case to make sure it was at the COL. The barrel is a very thick barrel so I do not think the heat was going to make it move. I did take time after each shot to check where the shot hit so there was at least 1 minute between shots and it was pretty cold. I had a thin barreled 243 that would start moving around if you shot it too much but do not expect this, especially on the 4th shot.

If I had any reason to believe that the movement was not the wind I would have fired another factory round but regrettably I did not.

I read that boat tails could be a bit finicky in the 22-250 so is this what I could expect. Oh shotting the 36 gr load the two hits were pretty close but left. The 36.5 was spread out a bit more. So I am thinking of loading some more with 36 gr but want to have a good handle on what happened before I do that. Any ideas, or experiences would be greatly appreciated.
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"I only said I like to know why things happen. But I think that it only makes it more interesting that you cannot ever really predict what is going to happen. Sort of a learning process which is right up my alley. I think if you could say add this and then that you will get perfectly shooting bullets then this would just be a way to shoot less expensively and even that is in my mind subject to debate. I like reading about quantum mechanics and you cannot predict things there either so I think I will be fine.'

The answer to your original question is:
The reason that the bullet impact was left of the original aiming point is due to the oscillation of the barrel as the bullet travels down it, the barrel moves around in a circle from it's central axis creating a 'whip' like motion. Your bullet is exiting the barrel at a time when the muzzle is pointing to the left of this axis, whereas your previous load was exiting when the barrel was pointing true along it's axis.
This is also known as "barrel time", this can be adjusted by moving your bullets closer or further from the "lands" in small (.005") increments until you find where the bullet exits exactly true, or in other words, where the barrel has stopped it's motion. I would not adjust your bullet to be in the lands, start .010" from the lands to begin with and move the bullet further into the case with each .005" increment. This is how you find the 'sweet spot' for your particular rifle and load. Ladder testing is the easiest and least expensive way to do this, it is explained in detail in this section of the board.

If your barrel has shown no signs of shooting to one side or the other in the past with factory rounds, then your bedding is NOT causing this. Just adjust your scope for the desired zero and go shooting!
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