How bad is this?
- Thread starter Dream of long range
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jwrowland77
Member
Get a VLD chamfering tool if you don't have one.
Chamfer the inside of the case mouth. Make sure they are started as straight as possible, even when running them into a sleeve type seater.
The concentricity of the jacket is very important to accuracy. Damage cannot be good for it.
The concentricity of the jacket is very important to accuracy. Damage cannot be good for it.
Dream of long range
Member
I used a chamfer tool on them. Just enough to smooth it out and not to much to give the case a sharp edge. Should I be giving it another spin or two?
blarby
Member
Your seating is very rough.
You can tell by the rings on the bullet that your seater is pushing as a ring on the bullet, and it needs a lot of force.... If thould be pressing on the ogive of the bullet with a shoulder-like grip... think the shoulder on your cartridge but on the bullet- as opposed to pushing a steel straw on the top of the ogive.
For long range accuracy loading, you should be fully supported against the ogive on seating- not a ring or a simple meplat pusher. It deforms the bullet, and can cause non-concetric seating.... which causes a lot of jacket deformation.
That force ring is probably showing up because you are etching your jacket against the case mouth either non-concentrically, or some other mishap... and its causing you to shave copper.
Depends, but I'd doubt anywhere near as much as the loose nut behind the trigger will. Psychologically you've probably made them into watermelon plunkers at best.
In reality, only trigger time will tell, but obviously they would be less accurate than a masterfully seated bullet.
You'll get there, lol- its not the end of the world.
What kind of seater are you using.
If it comes in a red box, it will answer a lot of questions.
You can tell by the rings on the bullet that your seater is pushing as a ring on the bullet, and it needs a lot of force.... If thould be pressing on the ogive of the bullet with a shoulder-like grip... think the shoulder on your cartridge but on the bullet- as opposed to pushing a steel straw on the top of the ogive.
For long range accuracy loading, you should be fully supported against the ogive on seating- not a ring or a simple meplat pusher. It deforms the bullet, and can cause non-concetric seating.... which causes a lot of jacket deformation.
That force ring is probably showing up because you are etching your jacket against the case mouth either non-concentrically, or some other mishap... and its causing you to shave copper.
Depends, but I'd doubt anywhere near as much as the loose nut behind the trigger will. Psychologically you've probably made them into watermelon plunkers at best.
In reality, only trigger time will tell, but obviously they would be less accurate than a masterfully seated bullet.
You'll get there, lol- its not the end of the world.
What kind of seater are you using.
If it comes in a red box, it will answer a lot of questions.
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Dream of long range
Member
I use the one that came with the lee kit and it seems to work fine but have had several rounds do this on different occasions with two different types of bullets.Even with different degrees of chamfer. Could this possibly be due to a under sized expander ball in the resizing die?
rcmodel
Member in memoriam
Maybe?
But Lee expanders have a well deserved reputation of being too big, and too rough, not too small.
If that's what you are using?
What caliber is it?
In mid-caliber rifle dies, the expander should be about .0015" .to no more then 002" under bullet diameter for jacketed bullets.
IE: So for a .308 caliber, the expander should measure no smaller then .306".
But?
Still looks to me like not enough chamfering, or the tool is cutting too steep an angle in the case mouth.
Or leaving a sharp burred edge on the chamfer due to a dull cutter.
Or, on the off chance you have. 7.62x54R, or 7.62x39?
Most die sets come with two expander buttons.
One for .308" bullets, and one for .310" - .311" bullets.
rc
But Lee expanders have a well deserved reputation of being too big, and too rough, not too small.
If that's what you are using?
What caliber is it?
In mid-caliber rifle dies, the expander should be about .0015" .to no more then 002" under bullet diameter for jacketed bullets.
IE: So for a .308 caliber, the expander should measure no smaller then .306".
But?
Still looks to me like not enough chamfering, or the tool is cutting too steep an angle in the case mouth.
Or leaving a sharp burred edge on the chamfer due to a dull cutter.
Or, on the off chance you have. 7.62x54R, or 7.62x39?
Most die sets come with two expander buttons.
One for .308" bullets, and one for .310" - .311" bullets.
rc
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Dream of long range
Member
They are lee dies. And yes there is tension as soon as i start the bullet in the case and the feel of it shaving off is felt through the handle. What are some recommendations for fixing this problem?
Watermelon blasting, paper punching, and steel slapping are what i mainly do so not seeing the pink
:,not having holes in the paper,and not hearing dings isn't any fun. On previous rounds loaded with the same shavings I didn't see a spread of shots that were crazy far off from the point of aim and most likely me for the few that were.
At some point I will load some hunting rounds so taking another variable out is another step consistency and insuring a good kill shot on what ever game it might be.
Watermelon blasting, paper punching, and steel slapping are what i mainly do so not seeing the pink
:,not having holes in the paper,and not hearing dings isn't any fun. On previous rounds loaded with the same shavings I didn't see a spread of shots that were crazy far off from the point of aim and most likely me for the few that were. At some point I will load some hunting rounds so taking another variable out is another step consistency and insuring a good kill shot on what ever game it might be.
blarby
Member
I would strongly suggest two things :
#1, more chamfer.
#2, a good grade seater die. Any flavor that sits on the ogive, not just a ring or a meplat smasher. I love my RCBS precision, some folks swear by the redding
#1, more chamfer.
#2, a good grade seater die. Any flavor that sits on the ogive, not just a ring or a meplat smasher. I love my RCBS precision, some folks swear by the redding
Dream of long range
Member
Sorry for not mentioning it previously these are .308 win.....
rcmodel
Member in memoriam
1. Take the expander out of the die and measure it, as I just posted the measurements for you.
2. Check the chamfer for enough, and no sharp edge left from a dull chamfering tool, as I just posted.
3. And one more time, What caliber is it??
As I ask in the previous post?
rc
2. Check the chamfer for enough, and no sharp edge left from a dull chamfering tool, as I just posted.
3. And one more time, What caliber is it??
As I ask in the previous post?
rc
Dream of long range
Member
The expander measures .308.
After checking the expander I grabbed a couple bullets of each type which are 168gr SMK and 155 A-max and they both measured at .309????.....
After checking the expander I grabbed a couple bullets of each type which are 168gr SMK and 155 A-max and they both measured at .309????.....
Mohave-Tec
Member
Chamfer. Make sure neck lube is adequate as well. Will help with seating.
Dream of long range
Member
Maybe I can figure it out on the next go round. Though I hope this will not degrade the accuracy to the point where I can't find a sweet spot for this load of 168gr SMK over acc 2520 going in one gr increments with 5 sets of 3 rounds for each load.
spitballer
Member
I agree - Chamfering. Make sure you check your case length, too - sometimes if your cases haven't been trimmed they'll stretch to the end of the neck and start bunching up against the bore, curling inward.
moxie
Member
Chamfer. And get some RCBS dies.
Here's the chamfer tool if you don't have one: http://www.midwayusa.com/product/78...ng-tool-17-to-45-caliber?cm_vc=ProductFinding
Here's the die set: http://www.midwayusa.com/product/564956/rcbs-2-die-set-307-308-winchester?cm_vc=ProductFinding
Here's the chamfer tool if you don't have one: http://www.midwayusa.com/product/78...ng-tool-17-to-45-caliber?cm_vc=ProductFinding
Here's the die set: http://www.midwayusa.com/product/564956/rcbs-2-die-set-307-308-winchester?cm_vc=ProductFinding
blarby
Member
Yep, thats how it works.
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