Round nose bullets

[armymutt]

Picked up a box of cast .357 158gr lead round nose bullets at the gun show. For some reason I thought they were RNFP. Think I'll have any issues with them in my 92?

[akuser47]

round nose bullets generally feed well in r92 rifles keep us posted I'm gonna move this thread into the reloading section it will shadow here for 72 hours.

[donhuff]

Yes, the issue will be that those round nose bullets will probably cycle and feed better than any other type you have used before. And believe it or not, they WILL kill game. Maybe not quite as dead as some of the other type nose shapes, but pretty close.

I shoot RN bullets in 38 cases a lot in my 357. I use the Lyman 358311 over 3.5g of bullseye.

[armymutt]

Sorry, I wasn't clear. I know they will cycle, the dummy round ran well in my out-of-the box gun. My concern is will they set off the primers ahead of them in the tube?

[Ranch Dog]

This gets asked on a regular basis and I personally do not think a lead round nose will. The Remington 150 & 170 grain Core-Lokts have been doing it for decades.

RP_RoundNose_CoreLokt.jpg

[Ranch Dog]

The Remington 150 & 170 grain Core-Lokts have been doing it for decades.

I just researched this and they are going on 70 years. If a lead round nose was blowing up tubes, they would have not made it this long.

[akuser47]

The Remington 150 & 170 grain Core-Lokts have been doing it for decades.

I just researched this and they are going on 70 years. If a lead round nose was blowing up tubes, they would have not made it this long.

no issue with tube detination they will be safe and function fine plus they are classic looking cowboy looking bullets.

[donhuff]

Sorry, I wasn't clear. I know they will cycle, the dummy round ran well in my out-of-the box gun. My concern is will they set off the primers ahead of them in the tube?

OH, well that's a different story. Forgetaboutit it aint gonna happen.

The first four or five hundred I shot did not do it, so I doubt the next 500 will either.

[armymutt]

Ok, thanks. I didn't think they would - I shoot the core-locks in my Win 94, and that's probably what it's been fed since 1941.

[Missionary]

Greetings
Primers are a bit stouter made than they were 130 years ago. Primers used to be made from copper in a near pure state. As BP was fazed out smokeless opperating under higher pressures needed a stonger primer cup to hold the pressure. Fire pins were also made of smaller diameter so as not to pierce the primers that were under stress from internal pressure.
On the other end of the case was a near pure lead bullet that would obturate to fill the air gap around it's diameter which was needed to chamber follow up rounds when shooting BP. These soft lead bullet noses would generally flatten out before they would set off a primer. It did happen but rarely and probably due to the copper primers which were large diameter Berdan types.
So today... a jacketed spire point in a heavy recoiling rifle can set off a primer in a tube mag. A lead spire point cast of linetype might. My worries of a .357 magnun with a RN doing so are very low. I shoot RN in my Marlin caliber 41 mag. I do not push the 215 grainer to absolute max mag FPS but they are chugging along at 1350 fps. Yet I have not seen any evidence of the 8th round to have any dimple on any primer.
If you have any fears take a file and put a small flat on the bullet nose.
Mike in Peru