Loading softer shooting cartridges

[Swagman00]

One of the best things about the Mosins is it's .310 bore. If you want, you can drop the bullet weight all the way down to 85 gr using .30 Carbine pills. I've bought bulk packs for light loading of my brass and it makes time at the range last longer, cheaper, and best of all easier on my shoulder.

[meaty-btz]

how is the accuracy with the .30 carbine bullets?

[Che762x39]

RCBS lists reduced loads and for example they have three suggestions for 8mm Mauser with 150, 170 and 200 grain bullets and IMR 4198.

I used their recommendations and had very good results with the .303 British and the .30-06 using SR 4759.

[Che762x39]

I take a shell, pour out about half of the powder, and reseat and crimp the bullet, shot them just for fun

Son you are not a comedian, maybe a idiot, but not a comedian.

[BruinGuy]

RCBS lists reduced loads and for example they have three suggestions for 8mm Mauser with 150, 170 and 200 grain bullets and IMR 4198.

I used their recommendations and had very good results with the .303 British and the .30-06 using SR 4759.

Would you have a link for this?

[RickD427]

Please don't make jokes in the reloading threads. There are a lot of members new to reloading right now.

Sir,

Excellent point - Some follow-up discussion on "Flashover" may also be good. The same point came up yesterday in a thread on "Light" vs "Hot" loads.

Flashover can cause excessive pressures, and the corresponding risk of damage and injury, in cases where reduced loads are used. The risk is greatest in long narrow cases and with compact powders.

Normally, the primer will ignite and the flash will strike the powder at the rear of the case, which in turn will burn forward and a fast, but controlled rate.

Flashover occurs where there is open space along the top of the cartridge (made possible by the reduced load). The primer ignites and the flash is able to reach a much larger surface area of the power. The result is the powder burns more quickly than intended and that can produce extreme pressures even though less propellant is used.

Always stay within the recommendations of established load manuals. This means both the upper and lower limits of the load data.

If anyone wants a real vivid, but unfortunately tragic, example of what can happen when you experiment, outside of controlled conditions, with load data, look at the turret explosion aboard USS Iowa. The investigation ultimately faulted unauthorized experimentation with the propellant load and compaction processes.

[mark501w]

IMR SR 4759 is dicussed by the old timers specificlly for reduced loads. Powder Valley has it in stock.

[mark501w]

This also called Detonation. Handloader mag had a series of articles relating to the subject when handloaders were arguing wether it existed or not. Slow burning powders wether being pistol or rifle can be dangerous in reduced loads. Ball powders can be goofy too if loaded out side their parameters. Anyway a Navy Ballistician wrote in to explain it did exist & they had problems with 16" guns. Cool article & he explained the phenomenon as Pressure Excursion.

[orangeusa]

I'm not a fan of Trail Boss, it's a bear to meter. But you will be getting a softer shooting load.

[Whiterabbit]

it should be noted, that handloaders STILL argue about whether it exists or not (the cause, not whether it happens), and there's no good evidence or proof of the cause of occasional extreme spikes in pressure when using very small charges of some very slow burning powder.

[mark501w]

It exists & small amounts of slow burning powders in low loading densities is the problem .