- Location
- The Orion Arm
Good idea? Do they need to be gas checked? What velocity should I keep them under to avoid leading?
Shooting cast in a Mosin
- Thread starter Melnibonean
- Start date
Shooting cast in the military rifles works great. google : Cast Bullet Loads for Military Rifles - Article
The lyman load books both the cast and the regular load book have lots of loads. I mostly a light load with cast using a plain based cast bullets loaded with Unique powder. If you go to the cast boolits web site you will find a huge amount of information from guys who spend a lot of time pursuing this hobby.
The lyman load books both the cast and the regular load book have lots of loads. I mostly a light load with cast using a plain based cast bullets loaded with Unique powder. If you go to the cast boolits web site you will find a huge amount of information from guys who spend a lot of time pursuing this hobby.
- Location
- The Orion Arm
Thank you Sir. Much appreciated!
Slug your bore, figure out what bullet diameter your specific rifle needs. Mosins can range from .309" to .312" or more in either direction. Mine shoots Lee .312" (sized to .311") 185gr GC made from pure WW and tumble lubed with Lee alox quite well.
12gr of Unique worked well for me for a light plinking load.
20gr of SR-4759 (discontinued but can still be found) also works great and was very light.
I'd pickup the Lyman Cast Bullet Handbook right away and start reading. There is also cast load data in their normal manual but it doesn't have the detailed articles specifically about cast bullet peculiarities.
Maximum velocity will range widely between different individual rifles and bullets. Bore condition, throat condition, lead hardness, lube type, GC or no GC, specific powders pressure curve effecting acceleration of the bullet, and various other factors will determine what velocity you can push to before you get leading or just terrible accuracy. There is also the RPM to consider but regular 91/30's will have pretty much the same twist rate, this wont change from rifle to rifle.
12gr of Unique worked well for me for a light plinking load.
20gr of SR-4759 (discontinued but can still be found) also works great and was very light.
I'd pickup the Lyman Cast Bullet Handbook right away and start reading. There is also cast load data in their normal manual but it doesn't have the detailed articles specifically about cast bullet peculiarities.
Maximum velocity will range widely between different individual rifles and bullets. Bore condition, throat condition, lead hardness, lube type, GC or no GC, specific powders pressure curve effecting acceleration of the bullet, and various other factors will determine what velocity you can push to before you get leading or just terrible accuracy. There is also the RPM to consider but regular 91/30's will have pretty much the same twist rate, this wont change from rifle to rifle.
Bassmaster
CGN frequent flyer
- Location
- WMU 48 - Whitetail country
Is there a specific mold that everyone's particularly fond of?....mine slugs @ .312"
sorry for the hijack....
sorry for the hijack....
If it slugs .312" you'd want a .313" or maybe .314". The Lyman 314299 is quite popular for Lee Enfields and larger Mosins. It casts a 200gr bullet that's nominally .314". Different alloys will expand slightly sometimes so it will likely cast anywhere from .3140" to .3155" depending on your alloy. It's a gas check design and can be sized from .314" on down to at least .311". I'd get it and just GC and size to .314". I run those in my Enfield that slugs .3135" and they work great. I tried them in my Mosin and they worked but for whatever reason, the .311" 185gr shot better groups so I stuck with those instead of experimenting more.
You have to get pretty big in most rifles before the bullet will expand the case neck too much to chamber. In a Marlin 336 in .30-30, just to test, I kept trying larger bullets and checking if they'd still chamber. I got up to .317" before the round wouldn't chamber. It varies from rifle to rifle and will vary with different cases.
You have to get pretty big in most rifles before the bullet will expand the case neck too much to chamber. In a Marlin 336 in .30-30, just to test, I kept trying larger bullets and checking if they'd still chamber. I got up to .317" before the round wouldn't chamber. It varies from rifle to rifle and will vary with different cases.
