Your definition of compressed load
 

ok, loading up a new batch of 25-06's tonite and since I have no real data in my manual for Accubonds I had to get some data off of reloadersnest. Well, as as I approached max load I looked down in the casing and noticed that the powder was just starting to creep up into the neck at 57 gr of IMR 7828. Now I didnt hear crunching when I seated the bullet, but there is no rattling sound when I shake it. What is a true definition of compressed???

RE: Your definition of compressed load
 

I don't currently use compressed loads but my definition would be a load where the bullet actually compresses the powder when seated.In some cases the compression actually causes the bullet to stop short of seating all the way by several thousands.

RE: Your definition of compressed load
 

I was reloading some 140 gr. Accubond for my 7mm-08 with RL19 powder. I was up to 49.0 gr. which is 101% load density. This load is a compressed load according to the Nosler book and when looking at the powder once in the case the bullet will actually push the powder down when seating the bullet. Now this is a compressed load...:eek:

RE: Your definition of compressed load
 

the funny thing is I am at 57 gr, that is where I stopped but the guy who posted the info said he made it to 60 gr before pressure signs showed up. When I test these tommorrow I will definatly start watching casing and extraction well before I get to 57 gr. I really hope to get the 7828 to work, with a 24" barrel should get me around3100-3150.

RE: Your definition of compressed load
 

I was hoping to get about 2900 fps. and I’m only accomplished about 2600 fps. , so I’m at my max. with this load. I’ll have to try another powder for higher velocity and good accuracy...

RE: Your definition of compressed load
 

mossy,
My definition is, when care is taken to feed powder slowly into a case so there is no empty space in the case, and seating a bullet compresses the powder even further. Powder may come into the neck, and be pushed down by a bullet and still not be a compressed load if all the bullet does is to move the powder into a space that had been vacant. If powder is compressed it may actually move the bullet forward in the case neck.

RE: Your definition of compressed load
 

I use a 4" drop tube which gives me a more uniform powder column which reallyaids in accuracy. If the base of the bulletcompacts the powder, enough to become smaller in bulk, or volume after using the drop tube I consider it a compressed load. Good luck.

RE: Your definition of compressed load
 

Same here...:)

RE: Your definition of compressed load
 

This is pretty obvious. If the powder charge comes up inside the case neck to the point where the bullet has to push some of it down into the case further when youseat it, that's a compressed load.

If you are using a stick powder, the kernels liein such a way that they cannot change their orientation in order to occupy any extra space that may be in the case. On the other hand, flake and ball powders have already done that, so it they come up into the bullet space in the neck, the bullet seating process will really compact the charge.

RE: Your definition of compressed load
 

Teah, I agree---I also wonder if you change any of the burning rate of stick powders by crushing some of it when seating the bullet? I understand that you certainly don't crush it all, but if that does happen, could it affect the uniformity of the loads?

RE: Your definition of compressed load
 

I have to use a drop tube with my .223 load. 27 grains of H4895 doesnt want to fit too well otherwise. I also use a drop tube with my .221 Fireball load. In both cases, the bullet does make contact with the powder. There is no crunching, so I dont consider it too compressed. The 55 grain Vmax in the .223 load does stick down into the case a bit.

RE: Your definition of compressed load
 

If you are using a 120gr bullet, you are compressing the load. The current IMR data shows the max load at 55gr=3105'/sec. They have no approved compressed loads. You are in between a rock and a hard place IMO. In order to keep the pressure down, you are going to have to seat the bullet at least 50 thou off the lands which will further compress the load. Quite frankly, I feel you are on thin ice here and would recommend the 55gr load. I would guess this load would also be far more accurate, 100% safe and the deer certainly will not know the difference.....dead is dead. If you need the speed convert it to an Ackley and go for it. Good luck and regards, Rick.

RE: Your definition of compressed load
 

I would think it would, on some theoretical level.. in all practicality, there's a lot more factors that go into it. Otherwise, we'd be sitting at our benches, hand mic'ing and weighing each individual kernel of powder.

RE: Your definition of compressed load
 

Im loading 110 gr bullets, 57 is max load for that grain.

RE: Your definition of compressed load
 

Do we even want to start about the difference between "compacted" vs. "compressed"??? Yeah, i realize the loading manuals don't mention compacted, but there IS a difference-----

RE: Your definition of compressed load
 

well, this is the reason I asked this question. I didnt even really know what compressed was. I kinda thought compressed meant you heard stuff crunching when you seated the bullet. So no, I dont know the difference between compressed and compacted.

RE: Your definition of compressed load
 

Compressed?Thats when you fill the case with powder, poke it down with a stick, and then dump some more in, isn't it? Kinda like with them muzzleloaders. Fill the barrel with powder, then poke it down with that little stick they give so you'll have room for the ball.

[8D]

RE: Your definition of compressed load
 

You are in great shape then. My cousin is loading the 110 gr Accubond and getting some terrific performance and groups. I think he is using 4831. Good luck and regards, Rick.

RE: Your definition of compressed load
 

Main Entry: 2compact
Function: verb
transitive senses
1 : to make up by connecting or combining : COMPOSE
2 a : to knit or draw together : COMBINE b : to press together : COMPRESS


Main Entry: 1com·press
Pronunciation: k&m-'pres
Function: verb
Etymology: Middle English, from Late Latin compressare to press hard, frequentative of Latin comprimere to compress, from com- + premere to press -- more at PRESS
transitive senses
1 : to press or squeeze together
2 : to reduce in size or volume as if by squeezing
intransitive senses : to undergo compression

RE: Your definition of compressed load
 

Thanks, Rebel, for the Webster approach. I've been away for a day and didn't get to spell this out. Ol' Mr. Webster further describes "compress" as "to condense". Back to " condense ", it refers to changing of gases, to compress, to reduce in size or volume and pack into smaller space".
With all that being said, I feel that unless we are altering the physical volume of the powder compared to it's weight, we really are not compressing it. What we PROBABLY are doing is compacting the charge, and if some of it gets a little smashed in the process, so be it. Stick powders are probably the ones that fall under this characteristic more than the ball, spherical, or flake ones, due to the lesser amount of air voids between the individual particles in the non-stick ones.
Anyhow, using whichever term you wish, I'm sure we all understand what we are talking about--------??????

RE: Your definition of compressed load
 

:D:D:D:D:D:D

RE: Your definition of compressed load
 

have you guys ever created a post and been more confused after 3 pages or responses than when you started?????? :D:D:D

RE: Your definition of compressed load