7.65 x53 need help!!!

[shooter1970]

I made my first attempt at cast bullet loads in my 1891,I used the lee 185 gas check bullet sized to .312 and some of the bullets are tumbling :confused: I am using 12.5 gr of sr7625 I am not sure what to do next please help.

[Maven]

shooter...., I have a Model 1909 Arg. Mau. and based on its bore, I'm guessing you need a fatter CB, e.g., .313" or .314". The easiest solution would be to slug your bore and "beagle" (Search the site & stickies for beagling a mold.) the mold you have. If that doesn't work, you should be able to size the CB down to .308" and paper patch it to fit your bore: Go to the Paper Patch forum and look for docone's posts on the subject. The third way is to purchase a mold that drops a larger CB: Lyman #314299 may be just what you need or perhaps someone has an extra group buy Fat Loverin mold they'd care to part with as it too is a good choice.

[runfiverun]

you can also speed them up some. use some 308 load data forh- 322 or h-4895
if you can hit 18-1900 they will shoot closer to your sights.
you definately want your boolits sized to 313 or bigger.
some of these older rifles like the arg and 7.7 jap really don't have much rifling left in the bbls so you really have to fill the bbl with lead.
mine likes the boolits pretty hard and big.

[Bret4207]

Try pressing the GC on and hand lubing or tumble lubing a few. IOW- Shoot them as cast and see.

[Larry Gibson]

shooter1970

Are you using a gas check?

I've shot a lot of M91s (currently have 3 M91s and 1 M1909) and the C312-185 Has shot well in all of them. The 314299 at .314 does a little better but not much.

Also 7625 is the fastest burning of the SR powders, pretty fast actually. You might just be accellerating that bullet a tudge too fast. Back of to 6 gr and work up. Better yet is go to a slower powder like 5744, 2400 or even slower with rl7, 3031 or my favorite, 4895. 28 gr of 4895 with a dacron fillet is a very accurate load in my M91s and M1909 with C312-185.

Larry Gibson

[Buckshot]

................Welcome to the board shooter1970! Baseline before attempting cast lead in a new firearm is to slug the barrel. Just trying this mould or that one 'could' produce results. It could also produce tumbling boolits and wasted components.

................Buckshot

[Kraschenbirn]

Welcome aboard. You definitely need to slug the bore on your Argie. The slug from my recently acquired '09 cavalry carbine measures .3115 x .303 and I'm planning to load the 185 gr Lee sized to .313 over either AA2015 or H4895. I've had good result with both behind the Lee boolit in the .303 Brit...essentially the same bore and similar case capacity.

Bill