You don't have to go nuts with chamfer. The faster my reloads became the more I noticed that I was more or less throwing the rounds at the cylinder. They seem to glide right in when your fingers are not on them.
January 1, 2013, 12:16 AM
You could taper-crimp into a cannelure if you had one.
January 1, 2013, 12:23 PM
I can make one I have the equipment Unless Big Brother Outlaws that to while there taking out guns ,
January 1, 2013, 12:45 PM
Sure, you can change crimp styles, but I guess I wouldn't expect to gain a lot of speed from that change.
A noticeable change would be in breaking the sharp edges of the chamber mouths, and a much greater change would come from actually chamfering them significantly.
Then, as owen said, use the pointiest, roundest/smoothest profile bullet you can find. No SWCs, at least a truncated cone style, and a round-nose, hardball profile is even better.
January 1, 2013, 01:00 PM
If you're talking about speed loading; ie., getting the cartridges into the cylinder, try a taper crimp. Just like feeding a round into a semi-auto chamber, a round with no hard ridge (taper crimped case mouth) will enter the cylinder smoothly.
January 1, 2013, 02:49 PM
Taper crimp die or Lee Factory crimp die.
Use a tapered , smooth jacketed bullet.
Round the sharp edge of the chambers just a touch.
Make sure your grips are not making you load at an angle.
Practice with dummy rounds.... A LOT....
January 1, 2013, 02:54 PM
In a stroke of genius, I came up with the cheapest and most practical solution:
Use a lighter weight bullet, like a 135-155, seat it deeper so that the ogjive is about .030" deeper than the case mouth, and put a heavy taper crimp over the shoulder. That way you won't need to cannelure the bullets and you'll have the benefit of easier chambering and increased bullet pull.
January 1, 2013, 03:05 PM
Did the pressure go up with deep seated bullets ?
January 1, 2013, 03:12 PM
Yes, that's why the lighter bullets so you maintain the same case volume. For example, use 180gr load data with deep seated 155ggr bullets.
January 1, 2013, 03:26 PM
Would there be an advantage to using 10mm cases ?
January 1, 2013, 03:32 PM
Or, you could just chamfer & polish the sharp chamber edges.
They will dig into the cases themselves, and slow speed-loads regardless, if you don't.
January 1, 2013, 03:34 PM
Yes. You could use heavier bullets. With .40 cases I would not go over 155grs.
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