|
|
Post by hacker54 on Sept 24, 2014 8:50:23 GMT -5
Hello Ed,
Well I thought I add to this mix what I use. In my Lyman vibratory tumbler I use the Lyman Turbo Brite Brass Polish. This stuff I have has no petroleum distillates or ammonia. It is water soluble and is considered a detergent. You add three cap fulls per pound of media this equate to about a table spoon. The media can be corn cob or walnut or any other type of shell media. Your media can be untreated or treated. I used some of this some time ago to recharge my corn cob and it brought it back to that green color it had when new. I'm due to treat again.
|
|
dangun
Member
I love the smell of burnt gun powder.
Posts: 517
Location: SW Florida
|
Post by dangun on Sept 24, 2014 11:09:24 GMT -5
Yes I did do some test awhile back. That test changed my way of thinking about vibratory tumbling load ammo. The kernels did break down slightly when tumbled for long periods of time. (overnight) Short periods of an hour or less showed no break down. Then I conducted a burn test. and saw no difference between ground powder and untouched powder.There maybe a difference, and I'm sure there probably is if the powder had been loaded into a cartridge. Anyway I now believe it is perfectly safe to tumble loaded ammo for short periods of time. I probably won't ever tumble any as I only require clean brass. Bright and shinning don't help it shoot any better. Has anyone ever measured the concentricity of your rounds after tumbling?
|
|
|
|
Post by krwada on Sept 24, 2014 11:23:28 GMT -5
Yes;
After seeing the results of Dan's test back over at the HUB on tumbling loaded rounds in a vibratory tumbler ... I have pretty much changed my mind about this practice. I now believe that tumbling loaded rounds for 30 minutes or less is probably fine and will not affect the performance of the ammo.
Perhaps the reloading manuals are a bit conservative on this advice no?
More than likely, I will not tumble any of my loaded rounds. In general, if there is lube on them ... I just wipe them off with a rag or paper towel. I do not mind the little bit of extra work.
There is no need to do this with any of the pistol ammo I load ... This is because I use those carbide dies with pistol ammo. There is no need to lube pistol ammo from what I can tell.
Rifle ammo, at least for me ... is like crafting ammunition. I take a lot of time making this stuff. The extra effort really does help with rifle ammo.
|
|
|
|
Post by hacker54 on Sept 24, 2014 21:44:35 GMT -5
Dangun brought up an important issue on tumbling loaded ammo. If you went to all the trouble of making it to go in strait in the case after tumbling is it still strait? After all if it doesn't go in strait into the bore it is not going to come out strait to the target.
|
|
gws
Member
Posts: 969
Location: NW New Mexico
|
Post by gws on Sept 24, 2014 23:05:04 GMT -5
Nobody is proposing or even suggesting that any arbor-seated benchrest ammo is ever tumbled! Horrors!  I'm sure each round is carefully & individually wiped with cotton before it is charged and bullets seated. Dangun may wipe it again after that.....I probably would....and wear gloves so you don't get finger oil & prints on it either?  And no, I haven't measured run-nout after tumbling, but then I probably wouldn't tumble any kind of long range competition ammo either........but then you don't tend to mass produce such so hand wiping seems to be easy enough. Hunting ammo and self defense ammo that I mass produce (if you can call a little 400 round batch that) is another thing.....tumbling for 15 minutes while I do something else beats wiping any day. But you got me curious......I will have to test run-out before and after.  I do know that my less than perfect tumbled ammo shoots better than most factory does. |
|
|
|
Post by springfieldxdm on Sept 25, 2014 18:49:51 GMT -5
Gwhis is would be interested to see that test, if you do it. Kind of reminds me of the box-o-truth tests :-). They took a bunch of spire points and cut the tips off some , dented some tips and scratched up the bases. I seem to remember that all the bullets except for the base damaged ones grouped just as well as the factory ammo. Understand that they were looking for plinking ammo accuracy and not bench rest moa.
It would seem that they factory would be extremely worried about this test if it had any appreciable impact. Most major brands tumble their ammo before it goes out the door, and of course they want their brand to shoot better than the others. I would guess your results will show no measurable difference.
Ed- as far as the polish goes any major brand of brass polish without ammonia should be fine on your rubber seal in the Thumler. That rubber is thick and chemical resistant. The only bitch of it is cleaning it off whenever you go to wet tumbling.
|
|
I'm sure each round is carefully & individually wiped with cotton before it is charged and bullets seated. Dangun may wipe it again after that.....I probably would....and wear gloves so you don't get finger oil & prints on it either? 
I do know that my less than perfect tumbled ammo shoots better than most factory does.
My daughter came from Missouri, my son and grand son, my wife and I had a nice dinner of grilled "porter house" pork chops, corn on the cobb, my son, G'son and I share 10/5. G'son is 4 minutes early though @ 10/4.
Pooh I hope you find to right house . 
