Case sizing for factory Rem 308 chamber?

[CatShooter]

Hey Catshooter, glad to see you back.-Joe

Hey Jo... glad to be back. Been dealing with "Stuff" - started a new ammunition and ballistics company, but lack of supplies is killin' me .

Are you still killin' poor widdle helpless chicken eggs in Rhode Island??

Meow

 

[jo191145]

Hey Catshooter, glad to see you back.-Joe

Hey Jo... glad to be back. Been dealing with "Stuff" - started a new ammunition and ballistics company, but lack of supplies is killin' me .

Are you still killin' poor widdle helpless chicken eggs in Rhode Island??

Meow

Dem no good rotten eggs were all rabblerousing degenerates and deserved everything they got. But alas I moved up to real BR shooting in Southington and gotta admit I've lost the desire to compete. Without the desire to win competition seems frivolous. I hope to make a few matches this year but "Stuff" has been heaped upon my plate also.
I did build a hunting rifle for the eggshoots looking to rekindle some of the flame. Never tinkered with hunting rifle class. Chambered in 6.5x284 then 204, 7-08 and 243 and just received a 308 barrel today. They up and cancelled the hunting class egg shoots on me. I know it was dem eggs that had the final say. Chickens!!!
I'd like to hear about your A&B company. Drop a line.

 

[CatShooter]

Hey Catshooter, glad to see you back.-Joe

Hey Jo... glad to be back. Been dealing with "Stuff" - started a new ammunition and ballistics company, but lack of supplies is killin' me .

Are you still killin' poor widdle helpless chicken eggs in Rhode Island??

Meow

Dem no good rotten eggs were all rabblerousing degenerates and deserved everything they got. But alas I moved up to real BR shooting in Southington and gotta admit I've lost the desire to compete. Without the desire to win competition seems frivolous. I hope to make a few matches this year but "Stuff" has been heaped upon my plate also.
I did build a hunting rifle for the eggshoots looking to rekindle some of the flame. Never tinkered with hunting rifle class. Chambered in 6.5x284 then 204, 7-08 and 243 and just received a 308 barrel today. They up and cancelled the hunting class egg shoots on me. I know it was dem eggs that had the final say. Chickens!!!
I'd like to hear about your A&B company. Drop a line.

I PM'ed my phone number and email address - get in tough and we can get a cheeseburger and catch up with "stuff".

 

[hogan]

Long Range shooters tend to load hot. Not much different than most short range BR shooters. A PROPERLY adjusted Redding S series FL die will not cause problems it will solve them. Unless its a custom chamber/die setup the only sizing die I now buy for any factory rifle is the S series FL die.

Hey Joe!

Funny how best accuracy is not "max load" territory. Palma guys shoot max velo to overcome the weight limits; at least in Intl comps where bullet weight max applies. Not really anything to be gained at "max load" loading if seeking to deliver precise fire.

Guy is shooting a factory chambered 700 VS. Not like the barrels are even half as good as the junk Rem was shipping 10yrs ago. Might even want to do a Cerrosafe cast of the chamber see if it is way outa spec.

Unless chamber is way over-long, Redding competition shellholder set (#1) might be the ticket for dealing with longish chamber.

 

[jo191145]

Long Range shooters tend to load hot. Not much different than most short range BR shooters. A PROPERLY adjusted Redding S series FL die will not cause problems it will solve them. Unless its a custom chamber/die setup the only sizing die I now buy for any factory rifle is the S series FL die.

Hey Joe!

Funny how best accuracy is not "max load" territory. Palma guys shoot max velo to overcome the weight limits; at least in Intl comps where bullet weight max applies. Not really anything to be gained at "max load" loading if seeking to deliver precise fire.

Guy is shooting a factory chambered 700 VS. Not like the barrels are even half as good as the junk Rem was shipping 10yrs ago. Might even want to do a Cerrosafe cast of the chamber see if it is way outa spec.

Unless chamber is way over-long, Redding competition shellholder set (#1) might be the ticket for dealing with longish chamber.

I'll admit I'm not a long range shooter but "max load" has many different meanings to many different shooters. My 6PPC and 30Br's require FL sizing every loading or "precise" goes out the window. Through much trial and even more error I've found nothing more precise than FL sizing in all my rifles. Consistency is always the key. I've found "personally" nothing more consistent than properly FL sizing. Ever watch an accurate rifle go to hell neck bumping when the webs get sticky? I simply develop loads from consistent brass. One awesome group never outweighs four stinkers. JMO YMMV.

 

[hogan]

Joe,

You're shooting a match quality rifle with likely custom spec'd chamber dimensions.

I am probably getting a rep around here as a nutjob talking wild stuff about sizers and seating dies; but you have best of all worlds, (possibly, not like I know your setups but), custom chamber can be tailored to the sizing die. If your brass is also planned for in advance, you have all the variables under control. FL sizer to bring fired brass back just under its .001 expansion; maybe .0015" under allowing for springback after sizing.

With all variables under control and oal of chamber controlled to limit virgin brass stretching, your FL sizer is really just minimally sizing and not working brass at all.

Factory Rem 700 varmint special though is pretty poor barrel to begin with; although can be made to shoot, maybe. The chamber might be .005 over go-gauge, might be cut off-center, might be out of round; might have other issues as well. Talking a $600 rifle with action worth $500 of that. How much $$ is there for the barrel? Maybe $50? Not like these are Custom Shop 40x guns with a decent barrel. Older VS are arguably "better".

Not a put down of the rifle, but the chambering job isn't done the way even a tactical rifle builder would do the chambering.

With a Factory Chamber, unless it is tight to specs, less sizing means ctg preserves its acuity to the chamber. Might go so far as to orient headstamp consistently so know brass is presented same position to the breach with every firing.

Nice to have a case gauge or precision mic to diagnose what dimensional changes are taking place in a factory chamber. Best accuracy tip I have ever proven consistent is short oal chamber. Cerrosafe chamber cast would show out of round chamber or other anomalies. Not like our guy has suspicions of such, but Remington has shipped basic rifles out that never should have gotten past an inspector. Then again, who knows what they do for quality control these days?

 

[jo191145]

Joe,

You're shooting a match quality rifle with likely custom spec'd chamber dimensions.

I am probably getting a rep around here as a nutjob talking wild stuff about sizers and seating dies; but you have best of all worlds, (possibly, not like I know your setups but), custom chamber can be tailored to the sizing die. If your brass is also planned for in advance, you have all the variables under control. FL sizer to bring fired brass back just under its .001 expansion; maybe .0015" under allowing for springback after sizing.

With all variables under control and oal of chamber controlled to limit virgin brass stretching, your FL sizer is really just minimally sizing and not working brass at all.

Factory Rem 700 varmint special though is pretty poor barrel to begin with; although can be made to shoot, maybe. The chamber might be .005 over go-gauge, might be cut off-center, might be out of round; might have other issues as well. Talking a $600 rifle with action worth $500 of that. How much $$ is there for the barrel? Maybe $50? Not like these are Custom Shop 40x guns with a decent barrel. Older VS are arguably "better".

Not a put down of the rifle, but the chambering job isn't done the way even a tactical rifle builder would do the chambering.

With a Factory Chamber, unless it is tight to specs, less sizing means ctg preserves its acuity to the chamber. Might go so far as to orient headstamp consistently so know brass is presented same position to the breach with every firing.

Nice to have a case gauge or precision mic to diagnose what dimensional changes are taking place in a factory chamber. Best accuracy tip I have ever proven consistent is short oal chamber. Cerrosafe chamber cast would show out of round chamber or other anomalies. Not like our guy has suspicions of such, but Remington has shipped basic rifles out that never should have gotten past an inspector. Then again, who knows what they do for quality control these days?

Understand where your coming from but I cut and broke a few teeth on factory rifles. Hell my forte has always been making factory rifles shoot better than most believe possible. Once you go full custom the thrill is gone IMO. The work is much less but so is the satisfaction.
I agree 100% on the short chamber. An opionated and often maligned but correct poster on BR Central clued me into his thoughts on chambers and fireforming and the crucial aspects of getting it just right the first time. "Crush Fit" on virgin brass a prerequisite for accuracy, not just in an Akley chamber but any chamber.
As a Savage aficionado I gave it a try. having the ability to create headspace anywhere I want (within reason) really seemed to help greatly.
His opinion was/is the only way to get brass to form the casehead squarely upon first firing was by crush fit. He also opined that if you didn't get it square on the first shot you never could.
Freely admit I know nothing of square case heads nor have the ability to measure them but damn if the planets didn't align nicely one I began crush fitting virgin brass in My Sav's. That and a few of my own theories which are more highly ridiculed than square caseheads gave me the thrill I once sought. Take care and good shootin