MOA or bust
Well-Known Member
See post #1
Do I need more freebore?
- Thread starter MOA or bust
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victor3ranger
Well-Known Member
I need to find this very setup for my 7STW and 7RM
I have two rifles that have HH load. Both are loaded to the top band like you show. I have a lot of room to move the bullet forward if I wanted, but that is where I started my load work.
They shoot great in my rifles even with the bullet seated that deep.
They shoot great in my rifles even with the bullet seated that deep.
LE Wilson neck trimmer with micrometer and you can buy the inside neck reamers by caliber. You use them on fired brass, and then resize.
victor3ranger
Well-Known Member
So you can get the inside neck reamer just by caliber for cutting out donuts??
You ream out the donuts before you resize the neck correct??
You ream out the donuts before you resize the neck correct??
You are shooting half inch groups at a pretty high velocity why give a flying flip what internet experts say you HAVE TO HAVE OR SHOULD HAVE. You do you and I firmly believe 95% of hunters would give a left one to be shooting half inch groups at that velocity.
MOAorbust, I shoot several cases with freebores intentionally designed that seat bullets like you have in the picture, and all of these barrels shoot tiny groups. One of the main issues in having the bullet down in the case is that it can take up room that could otherwise be used for powder. Many have found that very slight compaction of the powder is often an aid in keeping the Extreme Spread down in velocity variations. Others have found that seating the bullet right on top of the powder is magic when it comes to accuracy. These advanced reloaders keep their mouth shut on the internet.
For the ultimate in-target shooting, having the intersection of the boat tail and bullet shank be about .020 above the shoulder/neck intersection of the case is desired. As you can imagine, designing cartridges like this often leads to using a rifle as a single shot, not desirable for most. Also, Designing cartridges like this often leads to Magazine OAL issues.
I found it rare to have doughnuts in cases where the parent cases were NOT necked up or down in a forming process, but as a matter of habit, I monitor my cases for doughnuts as I described in my previous post.
For the ultimate in-target shooting, having the intersection of the boat tail and bullet shank be about .020 above the shoulder/neck intersection of the case is desired. As you can imagine, designing cartridges like this often leads to using a rifle as a single shot, not desirable for most. Also, Designing cartridges like this often leads to Magazine OAL issues.
I found it rare to have doughnuts in cases where the parent cases were NOT necked up or down in a forming process, but as a matter of habit, I monitor my cases for doughnuts as I described in my previous post.
So if the reamer was set up for this bullet to be .060" from the junction...
What type of COAL are we talking about?.... 4.00" +
Is this going to be used in a mag fed gun, or is it a single shot?
What type of COAL are we talking about?.... 4.00" +
Is this going to be used in a mag fed gun, or is it a single shot?
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Exactly!...
With that long of a HH bullet seated at the junction, it looks like someone hanging a baseball bat out in front of them by only hanging on to the knob of the bat
The cartridge will be long...
With that long of a HH bullet seated at the junction, it looks like someone hanging a baseball bat out in front of them by only hanging on to the knob of the bat
The cartridge will be long...
Feenix, is that a 300 or a 250 Berger?
Sorry, my bad! It's the 300 Berger.
MOA or bust
Well-Known Member
Appreciate all the comments.
I am a hunter/reloader only, although OCD.
Rounds must mag feed for my purposes.
To get the bearing surface of the bullet at or above the shoulder/neck junction would require 0.24" more freebore and keep my 0.020" off the lands. (Current COAL is 3.52 and needed COAL is 3.76.)
I have the extra length in magazine (Accuratemag .300RUM), but I'm not sure I would benefit from the extra work, money, and load work-up.
I am a hunter/reloader only, although OCD.
Rounds must mag feed for my purposes.To get the bearing surface of the bullet at or above the shoulder/neck junction would require 0.24" more freebore and keep my 0.020" off the lands. (Current COAL is 3.52 and needed COAL is 3.76.)
I have the extra length in magazine (Accuratemag .300RUM), but I'm not sure I would benefit from the extra work, money, and load work-up.
Muddyboots
Well-Known Member
I would caution seating ANY HP bullet really close to magazine wall due to potential damage to the hollow point. Especially during feed up onto ramp. ALL HP bullets are sensitive to tip damage which can affect bullet's performance.
