riude wrote:Again, just my opinions:
Case filling ain´t problem in 300blk with any powder.
If someone refers to "Reduced-Charge Detonation" or such, please show me some real report of this myth?
As far as I can know, any powder manufacturer or proof/reaserch instance hasn´t ever be able to produce such thing in laboratory? I bet they have user quite a lot of resources to do it.
I might be wrong, but won´t believe it before some real evidence.
Here in Finland many many people have shot subs for decades on almost every caliber with N310 powder.
Example I have shot 270 win subs with it, without any problems. Without any buffer material.
I can tell you filling degree is quite low.
For accuracy, keyword is fast enough pistolpowder to get constant chamber pressure and slippery (cast, or even better plated cast bullets).
Jacketed bullets are definite no-go´s for accuracy. By accuracy I mean max. moa with 10 rds/100 meters.
Personally, I don´t see any reason why experienced reloader shouldn´t develop his own subsonic loads with any pistol powder.
But as said, just my opinions, do your own research and stay safe.
The powder that bothers me in reduced loads is H110/296. A lot of debate over the years, but here is the warning that used to be on all Hodgden/Winchester load data for the powder.
For those loads listed where a starting load is not shown, start 10% below the suggested maximum load and then approach maximums carefully, watching for any sign of pressure (difficult extraction, cratered and flattened or blown primers, and unusual recoil). H110 and Winchester 296 loads should not be reduced more than 3%.
Reduce H110 and Winchester 296 loads 3% and work up from there. H110 and Winchester 296 if reduced too much will cause inconsistent ignition. In some cases it will lodge a bullet in the barrel, causing a hazardous situation (Barrel Obstruction). This may cause severe personal injury or death to users or bystanders. DO NOT REDUCE H110 LOADS BY MORE THAN 3%.
A lot of revolvers damaged or destroyed with reduced loads using those powders. Correct that it has not been proven in labs, but why chance it with that particular powder.
Any load that has velocity swings measured in 3 digits is not safe, and I have personally seen that with a few fast powders loaded in low densities, and often with H110/296.
In most bolt actions, they are strong enough to hold together. Revolvers, some lever guns and AR's the actions just aren't strong enough to play those games.
Same goes when using smokeless and down loading for black powder cartridges. There are a few powders that are banned in competition for the same reason.