Need help with boolit ID

[palabman]

I just bought some Colt 45 caliber boolits off of a relative and can't figure out exactly what I have here.



It looks to be a Lyman #452424 or RCBS #452-270-SAA. He has them listed as 260gr and they weigh out at about 264gr.
The boolit height is 0.795 inches.

The problem I am having is getting the crimp in the groove and having the OAL within specs. The best I can do is about 1.660 OAL. The case length is under max.

Should I just trim the cases back to fit? Any thoughts?

[MBTcustom]

Why not forget the crimp and just shoot them? unless you are using a rifle with a tubular magazine, the crimp is just asking for unneeded trouble.

[palabman]

Why not forget the crimp and just shoot them? unless you are using a rifle with a tubular magazine, the crimp is just asking for unneeded trouble.

Point taken.

[BCB]

They're not 45-270-SAA...

They measure 0.728" long and mine weigh it 283 grains using wheel weights...

Good-luck...BCB

[runfiverun]

454424.

[palabman]

454424.

Thanks runfiverun. That's what I thought. The only thing that bothers me about this is while they are being loaded for a revolver so crimp isn't critical, there is no way that I can get an OAL of 1.575 (Lyman Cast Bullet Handbook) and crimp in the groove. The shortest I can seat them are at 1.655 to crimp in the groove. Oh well, I guess Ill just shoot them.

[ku4hx]

Listed cartridge OAL is not an absolute. Unless you're shooting these in a heavily recoiling gun, a crimp may not be necessary.

Crimps for certain revolver loads can be quite important. Some hard-to-ignite powders need a firm crimp and I can tell you from personal experience, cartridges with little to no crimp in a gun with heavy recoil can certainly back the case away from the boolit under that heavy recoil. I've seem more than one cylinder bound that way.

[MBTcustom]

I have been casting and loading boolits since I was 14 years old. I have a pretty good pile of molds and they all have "crimp grooves". You want to know how many times it has magically happened that the crimp groove just happened to be in the right spot for my guns? Not one single time ever. OK, well when I loaded my 358 rifle boolit in 38 special brass, that one was just about perfect, but other than that, nada.
You got to fit the boolit depth to your gun, regardless of where the crimp groove happens to be.

Now that being said, if there is one instance where that does not apply nearly as much is revolver loads, but like I said before, I don't crimp except just enough to iron out the casemouth flare.

I'm realizing that with a 45-70 guide gun, a crimp is a bit of a necessity, but with 30-30 I never had a problem.

[stocker]

Should have double checked caliber. Was thinking 44 special brass might help, but nope.