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Target/ELR 375 HE..
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CheyTac copper 350 at 4.840, Sierra 350 at 4.455, Hammer Hunter 329 at 4.4515 2 grooves exposed seated to just up from the bottom of the neck, Hammer Hunter 329 at 4.415 1 groove exposed.
When the 585HE reamer goes out for re-profiling to 375HE I will ask Steve to make some very pointy Hammer Target
CheyTac copper 350 at 4.840, Sierra 350 at 4.455, Hammer Hunter 329 at 4.4515 2 grooves exposed seated to just up from the bottom of the neck, Hammer Hunter 329 at 4.415 1 groove exposed.
When the 585HE reamer goes out for re-profiling to 375HE I will ask Steve to make some very pointy Hammer Target
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Here is picture of my freebore checking setup, where we used a throater to
make different length freebores in small increments to check bullet fit and
find out how far we could get bore rider bullets out of the powder space,
The bullet in the barrel is a 400gr MTAC with stupid seal band off, The
case behind is with same bullet in it at max length possible and still keep
bullet tight in the case, Its overall length is 5.05", can get 185gr dense ball
powder under it, settled and.compressed.
I'm telling all for absolute top speed, get bore riders,
load them out in longer freebore, so you can get speed without pressure
problems, as Manson, etc will give you any freebore on reamer you want.
If CEBs take off the band so you can use the freebore.
Other 600 cases behind need two more neck swage passes and deburring
and they are all necked, little polishing, photogenic perfect. Ed
make different length freebores in small increments to check bullet fit and
find out how far we could get bore rider bullets out of the powder space,
The bullet in the barrel is a 400gr MTAC with stupid seal band off, The
case behind is with same bullet in it at max length possible and still keep
bullet tight in the case, Its overall length is 5.05", can get 185gr dense ball
powder under it, settled and.compressed.
I'm telling all for absolute top speed, get bore riders,
load them out in longer freebore, so you can get speed without pressure
problems, as Manson, etc will give you any freebore on reamer you want.
If CEBs take off the band so you can use the freebore.
Other 600 cases behind need two more neck swage passes and deburring
and they are all necked, little polishing, photogenic perfect. Ed
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Some one at CEB should be making 400 gr with a slight wasp waist
where they now have seal band and about .050 shorter BT, Guys doing
these guns are buying premium 4-500 buck barrels so they shouldn't need
a seal band, , need best aerodynamics, not gimmicks. Ed
where they now have seal band and about .050 shorter BT, Guys doing
these guns are buying premium 4-500 buck barrels so they shouldn't need
a seal band, , need best aerodynamics, not gimmicks. Ed
Here is the neck swage deal setup, got two like this now.
This is threaded die we put sleeve in to fit case, its top is threaded 7/8 x 14.
The bullet seating plugs with these dies is same thread and we had a bunch.
They have 30 degree taper in them with hole, we redrill/reamed hole sizes in five
.020" increments, for last stages, First 6 stages are just 7/8 x 14 die parts with
30 degree chamfer we put on them.Matches case shoulder
We have 6 more of big threaded dies if some want to get one to sleeve and
make neck swage, CH4 got those plugs to rework.Everybody got die parts,Ed
This is threaded die we put sleeve in to fit case, its top is threaded 7/8 x 14.
The bullet seating plugs with these dies is same thread and we had a bunch.
They have 30 degree taper in them with hole, we redrill/reamed hole sizes in five
.020" increments, for last stages, First 6 stages are just 7/8 x 14 die parts with
30 degree chamfer we put on them.Matches case shoulder
We have 6 more of big threaded dies if some want to get one to sleeve and
make neck swage, CH4 got those plugs to rework.Everybody got die parts,Ed
Attachments
We are the home of the ''45,000 psi case'', hahah, that has been
shot 6-8 times at 65-70,000, then redone and used some more.
330 gr goes over 3750 in 34" bbl. Loads are in long free bore so
bullet is not in powder space. Any case will have pressure problems
if bullet put case way down below the neck, Some loads guys are doing
bottom of the bullet is below the shoulder even, a tenth of an inch.
Not the top of shoulder but below bottom of shoulder..
No way to run a railroad as they say. Ed
shot 6-8 times at 65-70,000, then redone and used some more.
330 gr goes over 3750 in 34" bbl. Loads are in long free bore so
bullet is not in powder space. Any case will have pressure problems
if bullet put case way down below the neck, Some loads guys are doing
bottom of the bullet is below the shoulder even, a tenth of an inch.
Not the top of shoulder but below bottom of shoulder..
No way to run a railroad as they say. Ed
A paradox about what wilcatters think of bullets and chambers.
They say bore riders help accuracy by helping to gett bullet started straight,
But yet say must have twice the chamber clearance at neck area as I have
on our reamer. If a bore rider design is starting bullet straight, we would
expect bullet not to cock sideways to need lots of neck room. ... IE if a case with bullet
chambers without neck binding why should more than .002" clearance be
needed in neck area, this is a tricky question.. Ed
They say bore riders help accuracy by helping to gett bullet started straight,
But yet say must have twice the chamber clearance at neck area as I have
on our reamer. If a bore rider design is starting bullet straight, we would
expect bullet not to cock sideways to need lots of neck room. ... IE if a case with bullet
chambers without neck binding why should more than .002" clearance be
needed in neck area, this is a tricky question.. Ed
One of our guys here got regular chamber reamer and
wegot resize die reamer,delivered for our guy out west, and we will
be able to make dies now, some others of both will be getting done.
About the question above, if biore rider bullet is flush with bottom of neck will the
action of the burning powder push on it straight or can it cock it sideways.
Or bind it sideways a little causing pressure problems
Tricky question.. Ed
wegot resize die reamer,delivered for our guy out west, and we will
be able to make dies now, some others of both will be getting done.
About the question above, if biore rider bullet is flush with bottom of neck will the
action of the burning powder push on it straight or can it cock it sideways.
Or bind it sideways a little causing pressure problems
Tricky question.. Ed
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Now if a bore rider bullet if it is down in powder space a tenth of
an inch below the bottom of the shoulder, can the burning powder
cock it a little. If you say never then can you guarantee that the burning
mix of the powder gets to all sides evenly and at the same time,of the
part of the bullet sticking down into the powder space . The total
amount of the bullet sometimes sticks down over a third of an inch below neck.... Ed
an inch below the bottom of the shoulder, can the burning powder
cock it a little. If you say never then can you guarantee that the burning
mix of the powder gets to all sides evenly and at the same time,of the
part of the bullet sticking down into the powder space . The total
amount of the bullet sometimes sticks down over a third of an inch below neck.... Ed
All of this is why I'm doing my testing with longer freebore and not any more of the
bullet in the powder space than needed to hold bullet straight. Having loose specs
on the neck to alleviate problems, so bullet can be shoved into powder space
adds more problems, pressure problems, bullet cocking, over working brass,making
pressure leaks, affecting accuracy. Like the chicken and egg quandary.
Needing extra stuff to seal up leaks, when if bullet set right, and neck set tight,
wouldn't be needed, seems crazym especialy if done right, plus more speed.. Ed
bullet in the powder space than needed to hold bullet straight. Having loose specs
on the neck to alleviate problems, so bullet can be shoved into powder space
adds more problems, pressure problems, bullet cocking, over working brass,making
pressure leaks, affecting accuracy. Like the chicken and egg quandary.
Needing extra stuff to seal up leaks, when if bullet set right, and neck set tight,
wouldn't be needed, seems crazym especialy if done right, plus more speed.. Ed
bigngreen
Well-Known Member
I'm having a little hard time making sense of all that as they don't seem to be written in complete thoughts but I will not run a neck clearance of .002 even on my 1000 yard bench gun, better accuracy and fewer flyers with more clearance, I've seen a lot better SD and a significant drop in weirdness with .004 neck clearance.
How far are you loading bullet down in powder space, IE, That is my point you
have to have more clearance if you load down in powder space.
But in 2 mile shooting we need max speed we can get, which
loading down in powder space works against getting max speed.
Right now my neck in chamber is .405, and all loaded cases are
.402" neck OD, with bullets loaded out for long freebore,, IE hardly any
Boat Tail of the bullet down below neck, no flat base bullet below neck at all..Ed
have to have more clearance if you load down in powder space.
But in 2 mile shooting we need max speed we can get, which
loading down in powder space works against getting max speed.
Right now my neck in chamber is .405, and all loaded cases are
.402" neck OD, with bullets loaded out for long freebore,, IE hardly any
Boat Tail of the bullet down below neck, no flat base bullet below neck at all..Ed
bigngreen
Well-Known Member
OK that makes more sense.
