So does this seating depth seem okay for 38 special?


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gfanikf
March 4, 2013, 09:33 PM
I'm intending to use the minimum Unique Load for a 158gr LSWC. By pleasant dumb luck this was my initial bullet seating. Seem in range between the min for load listed by Lee and the max OAL for the cartridge.

http://i.imgur.com/FyvkssB.jpg?1
http://i.imgur.com/UG16wKl.jpg?1

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ColtPythonElite
March 4, 2013, 09:42 PM
Seat and crimp in cannelure and work up a load from the minimum charge and don't worry about it.

billybob44
March 4, 2013, 09:44 PM
:D1.475" that your caliper is reading is the EXACT length listed in the Hodgdon Data for a 158gr. SWC, in .38Spl.

I would give them a good roll crimp+get to shooting...Bill.:)

gfanikf
March 4, 2013, 09:45 PM
Seat and crimp in cannelure and work up a load from the minimum charge and don't worry about it.
Okay, it does actually seem to be right along the cannalure...well the part of the bullet painted blue. Definitely starting in the minimum, I want some nice light loads for shooting my Colt Cobra, no wrist breakers...and besides +P isn't good in the long run for the gun anyway.

:D1.475" that your caliper is reading is the EXACT length listed in the Hodgdon Data for a 158gr. SWC, in .38Spl.

I would give them a good roll crimp+get to shooting...Bill.:)

Awesome!

That said I can't get crimping figured out that well, but that just means watch some more youtube videos and read some more. I just can't visually tell what the hell even happened with the die! Lol

beatledog7
March 4, 2013, 10:26 PM
Seat to the middle of the cannelure, if there's a cannelure, and give them a little roll crimp. The right OAL for cannelured bullets is determined that way and no other way.

exbrit49
March 4, 2013, 10:48 PM
Been loading to that dimension for over 30 years, its right in the canelure
you are good to go!

david_r
March 4, 2013, 11:15 PM
cannelures aren't painted blue. There are a number of lead bullet brands that have a lube groove full of blue lubricant.

Jim K
March 4, 2013, 11:21 PM
The COAL limit is defined by the cylinder length, not some book. If you are firing .38 Special in a .357 revolver, you can have a greater COAL with no problem.

Jim

Walkalong
March 5, 2013, 07:05 AM
As posted, crimp into the crimp groove and whatever OAL that comes out to is the proper OAL for that brass length and bullet. Start low and work up. It is rare when this method will not fit a cylinder. The bullet makers want the product to work. But of course, as posted, the max OAL is determined by the cylinder.

http://www.thehighroad.org/attachment.php?attachmentid=104541&stc=1&d=1251758452

gfanikf
March 5, 2013, 09:37 AM
As posted, crimp into the crimp groove and whatever OAL that comes out to is the proper OAL for that brass length and bullet. Start low and work up. It is rare when this method will not fit a cylinder. The bullet makers want the product to work. But of course, as posted, the max OAL is determined by the cylinder.

http://www.thehighroad.org/attachment.php?attachmentid=104541&stc=1&d=1251758452
Thank you the picture is quite useful. That's actually where I was trying to seat the bullet, though admittedly it was more trying get a number initially. When I did get it, it just looked so spot on perfect I just went for a calipers. I need to do a little readjusting (I moved the die from my hand press to my turret press.

I'm more of a visual learner and for the life of me, even though I set the die up as the Lee video explains, I can't see any difference for the life of me (granted it was late and I may have just missed it). So the picture above helps a lot. I assume the one on the left is pre-seating and pre crimp and the one on the right is post, right?

Walkalong
March 5, 2013, 09:58 AM
The one on the left is to show the crimp groove so one can better visualize the brass rolled into the groove. I like visual as well. Explain it and I am.. ok I think I have it, but show me as well and... oh yea, got it. :)

Walkalong
March 5, 2013, 10:00 AM
Lots of good crimp pics here (http://www.thehighroad.org/showthread.php?t=469815).

gfanikf
March 5, 2013, 10:09 AM
The one on the left is to show the crimp groove so one can better visualize the brass rolled into the groove.
Okay, that's what I was thinking. For some reason I was using the paint as a guide initially (still checked lengths). This will make adjusting my die a ton easier since I won't need to take it out until after I get close since I can use the cannelure as a visual reference.

I like visual as well. Explain it and I am.. ok I think I have it, but show me as well and... oh yea, got it. :)
Yeah, sometimes I'll read a paragraph on and my eyes will just glaze over, but same info in a youtube video and it all clicks.

Lots of good crimp pics here (http://www.thehighroad.org/showthread.php?t=469815).

Awesome I'll post some pics tonight of crimps I try if I can. If that works out well than I can just start measuring powder and get a box of ammo out of the way (still validating weights and checking lengths).

Muddydogs
March 5, 2013, 10:15 AM
Set your crimp die with an empty case and no bullet, you will be able to see how much the mouth is rolling over and measure with calipers. All the crimp is doing is removing the case mouth bell, its not crimping the case to the bullet per say, a stiff crimp is not a good replacement for good case neck tension.

rcmodel
March 5, 2013, 10:38 AM
its not crimping the case to the bullet per sayIt is with a roll-crimp as used with revolvers.

rc

returningfire
March 5, 2013, 12:40 PM
Isn't the Colt Cobra a 38spl? and not a 357mag?
Or did I miss something?

Muddydogs
March 5, 2013, 03:16 PM
It is with a roll-crimp as used with revolvers.

rc
Case tension is still holding the bullet just like taper crimping revolver rounds which it seems a lot of cast shooters are using taper crimp instead of the roll crimp.

Walkalong
March 5, 2013, 07:58 PM
But with a roll crimp in a revolver bullet the crimp is also holding the bullet as well. With heavy bullets and hard recoiling calibers it needs that extra holding power along with proper neck tension.

What you described:
All the crimp is doing is removing the case mouth bell, its not crimping the case to the bullet per sayis correct for an auto caliber, but not a revolver round when using a roll crimp, and as I posted, many revolver rounds need that roll crimp. Some don't.

gfanikf
March 5, 2013, 10:46 PM
Here we go with some crimps. One on the left had the wrong depth by .05, but the one on the right is 1.75, but had to be redone as I initially cycled the crimp die before the seating one. lol

http://i.imgur.com/XTZ5VyN.jpg?1

ArchAngelCD
March 5, 2013, 11:57 PM
I have never measured the OAL of a revolver round. As said above, crimp in the manufacturers supplied crimp groove and call it good.

Steve C
March 6, 2013, 03:14 AM
Revolvers are easy. Crimp in the groove provided and/or stay below the max COAL of 1.476" if no crimping groove exists. Drop them in your cylinder and make sure they're not sticking out past the front or not fully chambering at the rear or they'll tie up the rotation. If they're too long, shorten em up til they fit.

gfanikf
March 8, 2013, 10:30 AM
Follow up:

I had a friend look them over last night. He tested them in in Wilson Combat Case Gauge Chamber, it fit with no problems. He also said the crimp and my primer seating were good to go. He was also kind enough to give me some trail boss so I could try some reduced recoil goods at first.

Looks like I'll be loading up my first full revolver batch this weekend. Was very nice of him to take the time and look over my dummy cartridges.

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