M91 “Calvary” Carbine for my son

[KneverKnew]

I'm sorry, I fought it as long as I could but the anal side of me won out. Cavalry.

LOL!! Yes you are right!! I didn’t realize it either. I will try and make the change so your anal side can unclench. LOL!! Thanks.




---------- Post added at 08:57 AM ---------- Previous post was at 08:50 AM ----------

You can decide if you want to reload with .264 bullets and stay on the safe side (if the bore is a tad dark but the rifling strong, also the accuracy might be more than ok. I shot quite a few Norma rounds in my Carcano, and they are loaded with .264 bullets.
Or you can use the .268 bullets. But the gain twist barrel causes some headaches sometimes. A wrong powder could cause the pressure to go up. Look for good reloading data if you can.
For what matters, I use 37,0 grs of W760 and a MLR primer and the results are great. Just too bad that powder is unobtanium here...
I don't know if you have it there, but there is another powder used by lots of Carcano shooters, the Tubal 5000. I don't have the reloading data in my head, but I have a reloading manual with them in. If you want, just let me know here or per PM.

Enjoy the little Italian rascal!

Thanks. Yes I have various powders to use. Many are specifically for older milsurps rounds.
Are you using the magnum LR primers mainly for use with the W760?
I have book data in the Hornady manual to go by and I believe they used a carbine to developed the loads. Powders listed should be fine. I have lots of .264 bullets to try plus the two bags of PRVI .268’s. I hope to do a chamber cast soon to get good measurements. I expect a worn throat.

[Ovidio]

Are you using the magnum LR primers mainly for use with the W760?

I use the magnum primers because they are suggested by many sources (not last by Dave Emary) and I found that with that load my old 91 long rifle shoots really well.
No sign of overpressure on the primers nor on the brass, no "wind" in the face from the pressure release gap, a nice, strong bang with good recoil, like a military round should deliver.
Everything as I'd expect it and also accurate.
I made some extreme tests with the W760, going loooooow with the load and using normal LR primers. Every now and then I got a whiff in the face, but I have the privilege of having a rifle that's been in our hands since 1932, when Grandpa won it in a national contest. And it was brand new. So, no risk of tampering, bad maintenance or other strange things.
It only shot military rounds until I happened to "intercept" it.

[KneverKnew]

I use the magnum primers because they are suggested by many sources (not last by Dave Emary) and I found that with that load my old 91 long rifle shoots really well.
No sign of overpressure on the primers nor on the brass, no "wind" in the face from the pressure release gap, a nice, strong bang with good recoil, like a military round should deliver.
Everything as I'd expect it and also accurate.
I made some extreme tests with the W760, going loooooow with the load and using normal LR primers. Every now and then I got a whiff in the face, but I have the privilege of having a rifle that's been in our hands since 1932, when Grandpa won it in a national contest. And it was brand new. So, no risk of tampering, bad maintenance or other strange things.
It only shot military rounds until I happened to "intercept" it.

That’s awesome. Have you slugged the bore for an actual diameter? My understanding is they are all .268” although they vary some one side or the other of that diameter. But not .264”. Am I wrong?