Cannelure question

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Cranberry

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Hi guys. If your projectile has a cannelure is it always correct to align it with the end of the case?

I'm loading 45acp using campro 250gr plated truncated. I previously used Berrys rn which didn't have a cannelure. The oal with the campro is 1.213 which is well below the Lyman spec. Maybe because I'm now using truncated bullets?

6.3gr of WSF btw, if that's significant.
 
250g or 200g

the correct length is where it will pass the plonk test
I have found pass the plonk test and then minus 0.005 ----> shorter works for when gun is dirty or varance in your press

You are pushing in the area of 200 pf
Why are you beating yourself and your gun up you need to use a chrono and then the add 5-10 pf over what you need

the cannelure is was for roll crimping it can help in taper crimp -- you do not have to crimp in the cannelure
 
Truncated cone bullets need to be loaded a touch shorter than round nose. So if that is what is making the loads shorter that's OK.

With a truncated cone you want the nose circle of the bullet to match that same diameter of a round nose at the same height. That way it'll ride into the bore in the same way as a round nose that is slightly longer. It's the same deal for those that use SWC bullets. The nose diameter wants to be at the same height as that diameter on a correctly loaded round nose.

I'm guessing that the "250gn" was a mistype as well. Looking at Budget I see that they show a 200gn TC bullet.

The cannelure groove SEEMS a touch low on the side of the bullet but if you're getting a 1.213 OAL from seating to that point then I guess it's fine. But field stripping your gun and doing the plunk test will confirm if it's working or not.
 
I have loads for the 250 grain, but it beats the chit out of the gun- they're actually meant for the 45 colt- velocities are so low that there's no significant between that and lead bullets,but you should drop the powder charge as it seems to be warm to me-the 45acp usual is a 200 or possibly a 230 and I use 6.0 of 231
 
Thanks for the help guys. The bullets are actually intended for the 45 Colt. I got a deal on them so I want to try to get them to work in my 1911.

Thanks for pointing out the too-hot load as well. 6.3 WSF is what I use behind a 230gr plated rn. I'll do a ladder from 5gr and see what feels good.
 
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