Powder compression

[MikeT]

In my experience, the more load development I did, the better the rifle seemed to shoot. Do you suppose that it may just be "trigger time" that makes the load shoot so well?
Keep on hav'n fun!
MikeT

[bpcrshooter62]

Mike you are correct trigger time sure does not hurt although you still need a decent load to work with !! Keep shooting and having fun

[martinibelgian]

For me compression is a result, not a goal when loading. I don't even bother to measure it - it is what it is. It just means a larger volume of powder in the case that needs to be 'lowered'.

[Coltsmoke]

I'm just the opposite, once I know what the compression is on my load I work hard to keep every round loaded with the same compression.

[bpcrshooter62]

martinibelgian i am with you as the same goes for me dont know what it is and dont care just know what works lol Keep shooting and having fun

[Kenny Wasserburger]

Just one example:

Olde Eynsford, and Goex express FG, in the 45-110 seems that once we hit .385 compression of the powder, the groups shrank. The ES was 5 fps and the SD 1. Once I find the ideal compression for a given powder I tend to stick too it. The volume remains the same generally. The weight is where I start first, measures such as the Harrell’s isn’t consistent enough for such a large amount of powder. My MVA copy of the old Belding and Mull works pretty well with a 10 throws avg wt my starting point.

Reference: Pedersoli 5@200 record PP group 1.336 inches. Won two 5@200 at Raton. Have 5 more of them Round shinny say Things National championship. Obviously I am doing something wrong.
Kenny W.

IMG_0204.jpeg

[Kurt]

I'm just the opposite, once I know what the compression is on my load I work hard to keep every round loaded with the same compression.

There are a lot of variables that change with compression. The inside case volume is a factor as well as how fast or changing the pour speed through the drop tube will change the volume hight in the case.
If compression is a worry do the case prep so the cases are uniform holding the same volume. It made a big difference when I shot bench rest using the same case and weight powder. It also makes a difference with black powder.
If you have cases with the same inside volume not cases by weight then how you dump the powder in those cases changing the hight it will still compress the same hardness as long as the inside volume is the same as long as your using uniform granulation of quality powder.

[desert deuce]

Today is Friday. A day for confession, especially sins of commission. I know, I know, BUT being ignorant or resistant to facts does not absolve your sin.

Woody outlined my general repetitive historical sins in loading and in so doing disclosed top-secret information to anyone paying attention. Fortunately, after adopting that advice I progressed to absolution and remission with ease and am mostly free of loading sinfulness. Cardinal sins at least.

Then along comes smoke and: ("There's a lot you don't know and you don't know that you don't know it. We are all in that category some are higher up on the ladder than others.") Well, what El Smoke neglected to include is that a generous segment of the loading population can't seem to find the first rung of that ladder which poses a problem for those at the top.

The final edict of faith conveys the view that most all of the confusion must be resolved by the inquiring disciple at the range, with their rifle and ammo because that is where their answer lies. Nobody else can do that for you. So, for that large segment of humanity still searching for the first rung of the ladder to BPCR Heaven the suggestion is go back and ponder the writings of Brother Woody.

[hueyw]

sometimes after reading Mr Taylors posts i wonder if he might be a politician in training.

[DeadEye]

He couldn't be Huey, he tells the truth.

Paul

[desert deuce]

Now my dear Brother Huey, since you are such a brilliant emissary of the BPCR Gospels to so many diverse congregations I feel obligated to mention that when I do wax quasi-Shakespearian it is likely because good etiquette forbids me succinctly stating what is actually on my mind.

[desert deuce]

Smoke blowing smoke: "I'm just the opposite, once I know what the compression is on my load, I work hard to keep every round loaded with the same compression."

The fly in that smoke is that amount of compression depends on powder column height.

AND, that is difficult to gauge much less maintain when your roadkill Possum was marinaded with 100 proof Vodka substitute.

[RB1Shooter]

Granted, this is a muzzleloader but, it's an interesting experiment / read on black powder compression.

http://www.ctmuzzleloaders.com/ctml_exp ... press.html

Cheers!

[Coltsmoke]

DD, you have to learn how to measure the powder column height, and learn how to correct it when it is off. This falls under what you don't know, and you don't even know it. I left out the part about most of them can't find the first rung on the ladder, I didn't want to piss them off. DD, as far as the roadkill possums, we now just add them to the mash barrel. When you light the fire to make the run, you roast the possum.

All those guys at the South Eastern Regional thought they were eating pork.

[desert deuce]

Yeah, heard one shooter thought some of those bones in the gravy didn't look quite right.
Hopefully nobody failed a breathalyzer test on the way home.