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Topic: 2021 1000 Yd BR Nationals (Read 1634 times) previous topic - next topic

Re: 2021 1000 Yd BR Nationals

Reply #90
I been using Peterson brass.....I may have some Lapua that I could try....need to go look.  Do you know why the Hornady behaved different than the Lapua?
Bob
If everything seems under control......you're just not going fast enough

Re: 2021 1000 Yd BR Nationals

Reply #91
I never could figure out why the hornady stuck in my shilen chamber.. couldn't find it anywhere in measurements.. i chalked it up to a metallurgy promblem .. however since then i screwed the factory savage barrel on a action for a hunting rifle and the hornady brass worked fine in that chamber
Grant

Re: 2021 1000 Yd BR Nationals

Reply #92
I spent some time looking at why the 6.5-284 brass wouldn't chamber well.  I think this is turning out to be cockpit error on my part.  I took some new brass and they chamber easily.  I then measured the shoulder length and it was significantly less than the brass that wouldn't chamber.  So I bumped the neck a couple thou on the fired brass and they chambered smoothly.   I think that when I switched barrels, I was using fired brass from the old chamber.  I thought I had bumped the shoulder enough but apparently not.  So after using a full length body die and setting the shoulders back, everything is looking much better.  The final test will be after I load and shoot them to see how they release.
Bob
If everything seems under control......you're just not going fast enough

Re: 2021 1000 Yd BR Nationals

Reply #93
I have heard but dont know if theirs truth to it or not that brass shot in one chamber will retain a memory so to speak and when fired in another chamber it will go back to the size it was when fired in the original chamber.. not sure i buy that as i have used brass in multiple chambers before with no problems.  Just something i have read on the internet so you know it must be true.. 😏
Grant

Re: 2021 1000 Yd BR Nationals

Reply #94
I have heard but dont know if theirs truth to it or not that brass shot in one chamber will retain a memory so to speak and when fired in another chamber it will go back to the size it was when fired in the original chamber.. not sure i buy that as i have used brass in multiple chambers before with no problems.  Just something i have read on the internet so you know it must be true.. 😏
 
I had heard this as well but have not seen it my somewhat limited experience.  I guess the test will be what the brass does after it is fired.  It it continues to mis-behave, then there may be some truth to it.  If it is true then it seems that replacing barrels would be a real problem since all the brass would need to be replaced....hard to believe that this would be the case.
Bob
If everything seems under control......you're just not going fast enough

Re: 2021 1000 Yd BR Nationals

Reply #95
Alot of guys say new barrel new brass.. i cant afford that.. lol.. the only problem i have run into with using brass in multiple chambers is premature case head seperation if the 2 chambers had a big headspace difference in them.. no problems with chambers within a thousandth or 2 of the same headspace.. it can show up with 6 or more thousandths difference..
Grant

Re: 2021 1000 Yd BR Nationals

Reply #96
The better gunsmiths can headspace a new chamber to match that of your old barrel within a thousandths +/- .

Re: 2021 1000 Yd BR Nationals

Reply #97
Consistent brass is such a core objective that even if your new chamber is a close clone of the old one, I still thinking it is prudent to start new brass with a new barrel. With 7-8 cycles on it, the brass is one of the least expensive parts of your reloaded cartridges at approximately 12-14 cents per cycle.

Re: 2021 1000 Yd BR Nationals

Reply #98
The better gunsmiths can headspace a new chamber to match that of your old barrel within a thousandths +/- .

Think I have 8 BRA barrels that share the same brass, chambered off the same reamer by the same gunsmith. This coming weekend i plan on taking my actions out to him to chamber up another 6 barrels for next season. With the actions in hand I've never had a chamber headspaced with any measureable difference.
I can swap a barrel in 15 minutes, 30 if I really get carried away cleaning things up and torque to 60 ft/lbs and get repeatable head space every time. I routinely shoot rounds in one barrel loaded for another with only the seating depth being off from varying throat erosion.
 l bet I have over 1000 pieces of brass that shoot in any of these barrels and will shoot in the new ones too.
Dave

Re: 2021 1000 Yd BR Nationals

Reply #99
^ yes we use the same gunsmith. 😉

Re: 2021 1000 Yd BR Nationals

Reply #100
I went from a Shilen barrel to a Krieger barrel.....I'm sure they used different reamers.  The good news is I still have some un-fired Lapua and Peterson brass that I can fall back on if I need to.
Bob
If everything seems under control......you're just not going fast enough

Re: 2021 1000 Yd BR Nationals

Reply #101
Decided to start cleaning.....here are the 350 rounds I shot last week....annealed and SS tumbled.
Bob
If everything seems under control......you're just not going fast enough

 

Re: 2021 1000 Yd BR Nationals

Reply #102
They sure are pretty.. alot of work ahead of ya there bob.. but its enjoyable work..
Grant