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Posted: 9/23/2018 6:26:18 PM EDT
[Last Edit: Redbirdxx]
I have another thread going about a 1500 Howa I just put together. I'll update that in due time but suffice it to say it was not a good day. Got the gun home and went over everything and found this-
 Attached FileI know that crown is critical when it comes to accuracy, does this translate to brakes as well? Because if it does it would explain the absolute crap day I had at the range today. Otherwise I need to keep looking for what went wrong... |
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Posted: 9/23/2018 6:34:03 PM EDT
[#1]
I'd really doubt it. The actual crown is before the brake.
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Posted: 9/23/2018 6:44:56 PM EDT
[#2]
I'm aware of where the actual crown is.
My question is would the unevenness in the exit of the brake possibly be enough to induce some yaw and screw with my groups? The gun should have been easily sub MOA, what I saw was 2-2.5. It was my first time out with it and am trying to eliminate potential problems, because there's definitely a problem. |
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Posted: 9/23/2018 6:51:49 PM EDT
[#3]
Again, I really doubt it.
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Posted: 9/23/2018 6:52:13 PM EDT
[#4]
Yes!
I was getting even lighter baffle strikes on the end cap with my .22 thread on suppressor, so light you couldn't even see a mark, and l had sideways strikes on the target at 10'. With huge groups. Ran a 1/4" bit through the end cap and no more sideways bullets and groups shrank. The bullet can not touch anything! |
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Posted: 9/23/2018 6:54:03 PM EDT
[#5]
Quote HistoryOriginally Posted By Bumblebee_Bob:
Yes! I was getting even lighter baffle strikes on the end cap with my .22 thread on suppressor, so light you couldn't even see a mark, and l had sideways strikes on the target at 10'. With huge groups. Ran a 1/4" bit through the end cap and no more sideways bullets and groups shrank. The bullet can not touch anything! |
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Posted: 9/23/2018 6:56:24 PM EDT
[#6]
Originally Posted By goldeyeslayer:
Again, I really doubt it. Originally Posted By Bumblebee_Bob:
Yes! I was getting even lighter baffle strikes on the end cap with my .22 thread on suppressor, so light you couldn't even see a mark, and l had sideways strikes on the target at 10'. With huge groups. Ran a 1/4" bit through the end cap and no more sideways bullets and groups shrank. The bullet can not touch anything! |
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Posted: 9/23/2018 6:57:11 PM EDT
[#7]
That hole should be bigger than your bullet by quite a bit, also I'm not seeing the problem? It's a bit rough?
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Posted: 9/23/2018 7:01:09 PM EDT
[#8]
Quote HistoryOriginally Posted By goldeyeslayer:
do you think that's a strike? Quote HistoryOriginally Posted By goldeyeslayer:
Originally Posted By Bumblebee_Bob:
Yes! I was getting even lighter baffle strikes on the end cap with my .22 thread on suppressor, so light you couldn't even see a mark, and l had sideways strikes on the target at 10'. With huge groups. Ran a 1/4" bit through the end cap and no more sideways bullets and groups shrank. The bullet can not touch anything! Easiest way to find out is to remove the brake and shoot the gun for groups. If the accuracy is what one would expect from the gun then there's something funky about the brake. |
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Posted: 9/23/2018 7:13:26 PM EDT
[#9]
Originally Posted By BoxofRox:
That hole should be bigger than your bullet by quite a bit, also I'm not seeing the problem? It's a bit rough? Originally Posted By Bumblebee_Bob:
It does look like it to me. Easiest way to find out is to remove the brake and shoot the gun for groups. If the accuracy is what one would expect from the gun then there's something funky about the brake. |
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Posted: 9/23/2018 8:16:25 PM EDT
[#10]
Shoot it brake less and you will know whether it’s the brake or not.
If it isn’t the brake, I’d start with the action screws (which you might want to check before you shoot next.) Then scope mounts. Then action bedding and barrel bedding or free float. Then the scope itself. Might try some different ammo early as well. I had one rifle that was MOAish with most ammo but hated one bullet, and I have a 30-06 which is gtg with everything except 165gr cored bullets. |
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FL, USA
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Posted: 9/23/2018 8:23:17 PM EDT
[#11]
If it's your first time running it, you may be using ammo or grain that it doesn't like. Sub moa is usually not every brand, weight etc.
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Posted: 9/24/2018 12:01:09 PM EDT
[#12]
If that was a strike you wouldn't even be seeing 2.5 MOA. It would be throwing bullets all over.
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Posted: 9/24/2018 12:26:21 PM EDT
[#13]
Originally Posted By JPK:
Shoot it brake less and you will know whether it’s the brake or not. If it isn’t the brake, I’d start with the action screws (which you might want to check before you shoot next.) Then scope mounts. Then action bedding and barrel bedding or free float. Then the scope itself. Might try some different ammo early as well. I had one rifle that was MOAish with most ammo but hated one bullet, and I have a 30-06 which is gtg with everything except 165gr cored bullets. Originally Posted By 12bhunting:
If it's your first time running it, you may be using ammo or grain that it doesn't like. Sub moa is usually not every brand, weight etc. Originally Posted By TeeRex:
If that was a strike you wouldn't even be seeing 2.5 MOA. It would be throwing bullets all over. |
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FL, USA
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Posted: 10/13/2018 3:25:45 PM EDT
[#14]
I’m a little late to the party, but also make sure the brake is not over-torqued.
Running a route-cause by eliminating variables is how I’d work the problem, starting by eliminating the brake and shooting for groups. |
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Posted: 10/13/2018 4:45:01 PM EDT
[#15]
I eliminated the brake as the problem last weekend and just got back from a relatively successful outing with the brake installed, so I can now definitively answer my own question- no, that machining error is not enough to significantly effect accuracy.
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TX, USA
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Posted: 10/23/2018 10:05:01 PM EDT
[#16]
Quote HistoryOriginally Posted By BoxofRox:
That hole should be bigger than your bullet by quite a bit, |
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Posted: 10/24/2018 7:41:47 AM EDT
[#17]
Quote HistoryOriginally Posted By Redbirdxx: Everything seems rock solid on the gun but it will get broken down and everything retorqued this week. The brake has been removed and will stay on my workbench until this is sorted out. I really hope that's not the case as I already have 200 of the same bullets waiting to be loaded. I thought the 140 grain ELD Match was about the safest choice I could make for 6.5 Creedmoor. I don't believe it's a strike. |
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Posted: 10/24/2018 7:55:05 AM EDT
[#18]
Quote HistoryOriginally Posted By divermedic68: What bullet are you running? |
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