Sniper Country Duty Roster collective wisdom

Reloading - Accuracy and case capacity filled:

I would like to pose a question on reloading. What effect does the percentage of case volume used have on a load? If I were to use a powder that came closer to filling my case would the potential for accuracy increase?
Daniel <>
Lacrosse, Fl, USA - Tuesday, February 16, 1999 at 13:44:04 (ZULU) 

"Usually" a case that has 90% or better will be a more accurate or consistant load, but not always, a good example is Varget in a 30-06 there is enough air space left over to, as someone said, "Keep a mouse alive for a week" and it shoots great. I know this probably didn't answer your question but there are exceptions to every rule.
Pat <>
USA - Tuesday, February 16, 1999 at 14:22:59 (ZULU) 
Daniel; this could touch a contraversy about primers but If you have any amount of air space that concerns you. Shoota can always do magnum primers to insure the ignition is a bit better. I shot a road of varget in a .300 win magnum that would hang fire on regular primers and shot one hole groups with magnum primers. Ah So! but grasshoppers do not rush into the temple with roading book and try this to cure every accuracy problem as it is a rast resort for me to increase ignition fire. Mucha betta to sorve another way! Many powders just prain work better if they are even a bit compressed. But when they have to Tamped to get it all in the case I get orrf there!
Solly if engrish suffa ,just had Chinese food rast night.

B.Rogers <>
USA - Tuesday, February 16, 1999 at 17:14:00 (ZULU) 

As far as reloading with powder not reaching the maximum case capacity is purely a matter of what the case will hold and the pressures of the powder used. As stated earlier you can use Varget in the 30-06 case and have an air pocket, but then there is the other extreme that loading up cases with a powder drop tube just to be able to fit the recommended powder in the case according to the various reloading manuals. Then you have to crunch the powder when seating the bullet. The only exceptions to this is to try to reach at least 90% cases capacity with the overbore magnums (i.e. 7mm STW, 257 Wby Mag, 378 Wby Mag, etc.) If you don't, you could get a hangfire, and SHIT that smarts, particularily with the big boomers. Magnum primers with these boys are a MUST. But thats a different topic. Almost started to ramble on, but I caught myself. I'm getting better.

Al Ostapowicz <>
Sittin'Here Bad to the Bone in Bad Ass , Ohio, USA - Wednesday, February 17, 1999 at 02:59:53 (ZULU) 

Back to Hot Tips & Cold Shots