Thanks this explains the noises I hear at night!When you are measuring bump, do you measure it immediately off the press? Try measuring 24 to 48 hours later. Brass is alive. Annealing takes its testosterone away.....
Thanks this explains the noises I hear at night!When you are measuring bump, do you measure it immediately off the press? Try measuring 24 to 48 hours later. Brass is alive. Annealing takes its testosterone away.....
have you tried SAC comparators? They fit the entire shoulder, caliber specific. Is that one of the comparators you are referencing? Considering lube on the shoulder will cause abnormal bump...I get the imperfect/ unclean statement.View attachment 1411280The outer surface of these cases are not perfect, when I use a comparator that covers the shoulder I can get minor variations whereas if I use a comparator that datum’s off the mid shoulder ( in my case I use a Hornday .30 insert) and keep the mating surface clean the amount of variations is quite minimal.
Sometimes that’s a lube issue. Maybe try experimenting with your process there.For those of you that don't anneal how are you getting consist shoulder bump? I have always had problems with all my competition rifles without annealing and getting consist shoulder set back. And I've tried a lot of presses and dies and they do matter, but I had so many different piles of sorted lengths and that lead me to annealing every time. Still cull brass for record pieces but not as many. I would love to stop and save the time so I really am interested in learning what the hell im doing wrong.
If it's a lube issue wouldn't it also apply to annealed brass? What is the best way to apply lube? I'm really trying to learn from thisSometimes that’s a lube issue. Maybe try experimenting with your process there.
I prefer a full shoulder width comparator (made using the chamber reamer) to ensure that the resized case will freely chamber. I’ve been “fooled” by the line contact inserts that don’t replicate the entire contact patch...View attachment 1411280The outer surface of these cases are not perfect, when I use a comparator that covers the shoulder I can get minor variations whereas if I use a comparator that datum’s off the mid shoulder ( in my case I use a Hornday .30 insert) and keep the mating surface clean the amount of variations is quite minimal.
Possibly. Annealed brass is really soft though and will not spring back as much, so it might cover it up. I personally use imperial wax on a RCBS pad and try to do what I can to keep the lube consistent. Don’t just rub it on with your fingers. And if you spray it, make sure it’s even.If it's a lube issue wouldn't it also apply to annealed brass? What is the best way to apply lube? I'm really trying to learn from this
The "best way" really depends on the type of lube you're using and your sizing process (like there's a difference how many case one is processing at a time).If it's a lube issue wouldn't it also apply to annealed brass? What is the best way to apply lube? I'm really trying to learn from this
That is excellent shooting.... I wish I had a range that long to get to try some longer range stuff. Most ranges I've been to are limited to 100 yds...I know I can consistently hit my 6" gong at 400 yards with my three primary hunting rigs. (6.5 Grendel, 30.06, and 7mm Rem)
I agree with this. I and several others that do bbl work will gladly use the end cutoff from your bbl...run the same reamer in short,(way short) and provide it with chamber work.I prefer a full shoulder width comparator (made using the chamber reamer) to ensure that the resized case will freely chamber. I’ve been “fooled” by the line contact inserts that don’t replicate the entire contact patch...
Not everyone is using a custom barrel or has a gunsmith ready to make a gizzie, so now we’re back to square one deciding on how to get a accurate repeatable number with tools that cover the work areaI agree with this. I and several others that do bbl work will gladly use the end cutoff from your bbl...run the same reamer in short,(way short) and provide it with chamber work.
It's the best imho for making a gage for bump or to the lands measurement..as new. Some smiths may charge a few bucks for this but some will do it at no extra charge when asked. Either is worthwhile, imo.
They call it a "bbl gizzy" or such. I've heard it called by different names.
im not sure how your getting fooled using a sharpe edge datum comparator, care to expand ?I prefer a full shoulder width comparator (made using the chamber reamer) to ensure that the resized case will freely chamber. I’ve been “fooled” by the line contact inserts that don’t replicate the entire contact patch...
The case shoulder angle and/or radius at the neck/shoulder junction of the resizing die didn’t match that of the chamber. So when only measuring the distance to the comparator datum indicated the case was properly resized, there was actually still interference at other location(s) which wasn’t detected until trying to chamber a round.im not sure how your getting fooled using a sharpe edge datum comparator, care to expand ?
Yup! Only issue was that I had loaded over 100 rounds before the discrepancy was discovered. Some rounds required a lot more bolt torque to close than is desired!Ok, and not being argumentative just “talking around the campfire” we now you have a gizzie that matches the chamber and a die that isn’t quite perfect. Either way the die needed to adjust down a bit to set enough clearance for rounds to chamber freely ?
I have 23+ firings on my 200 pieces of 6 Dasher brass (3071fps from 33.1g of RL-15) and I’ve not lost a single piece due to loose primer pockets. I’ve culled out about 20 pieces along the life of this batch for various reasons (continued flyers from a single piece, cracked necks or shoulders, even 3 for hairline cracks in the body). I anneal after every firing.Many shooters who anneal claim that they do it to extend brass life. I've been reloading for nearly 40 years. In that time, virtually all of my brass became "exhausted" when the primer pockets got loose. It was a very rare incidence when a neck split.
I started to anneal recently to see if I can detect a benefit for myself. I'm hoping I can see the difference on paper. If not, I've just wasted my time and money.
How is annealing expected to extend brass life?
I bet you run your Dasher at “moderate”speed.I have23+ firings on my 200 pieces of 6 Dasher brass (3071fps from 33.1g of RL-15) and I’ve not lost a single piece due to loose primer pockets. I’ve culled out about 20 pieces along the life of this batch for various reasons (continued flyers from a single piece, cracked necks or shoulders, even 3 for hairline cracks in the body). I anneal after every firing.
How can you possibly get consistent results when you anneal the first piece for 10 seconds, the 2nd abd 3rd pieces for 7 sec, and the 4th piece for 6 seconds??Here is the video:
1) mini potters wheel ( went up in price in 6 mos!) I'd offer $20 on one without the sticker.
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2) case holders ( i cut down to make them shorter). https://www.littlecrowgunworks.com/store1/308-Win-Brass-Annealing-Mandrel-p128369320
3) tight wrap ss spring ( i got one off a coleman cooler). Have extra if you cant find.
4) 2 cent drywall anchor plug that fits inside spring and on the shaft for the pottery wheel.
5) pair of thin spring loaded needle nose pliers.
6) pencil tip burner nozzle.