Good crimp?

[Rye Miles #13621]

This crimp look okay? I’m doing this on a SS press, scroll down for picture sorry.

 

 

[Rye Miles #13621]

[Charlie Harley, #14153]

A little over crimped, but I don’t see that as being a major problem. The cases will split sooner due to the excess bending of the lip. 
 

Theoretically the pressure will be higher, but there’s also evidence that a snugger crimp supports more consistent combustion and accuracy. 
 

Bottom line, I would rather over crimp than under crimp, especially in our game.  Bullets sliding around in the case can lead to unpleasant outcomes.

[Eyesa Horg]

I crimp mine a little higher up in the groove and not quite to where it starts flattening the brass leaving that ring. I think that will weaken the mouth of brass and cause early splitting. JMHO

[Rye Miles #13621]

25 minutes ago, Charlie Harley, #14153 said:

A little over crimped, but I don’t see that as being a major problem. The cases will split sooner due to the excess bending of the lip. 
 

Theoretically the pressure will be higher, but there’s also evidence that a snugger crimp supports more consistent combustion and accuracy. 
 

Bottom line, I would rather over crimp than under crimp, especially in our game.  Bullets sliding around in the case can lead to unpleasant outcomes.

I have some that I backed off the crimp a tad like this one 

Better??

[Charlie Harley, #14153]

3 minutes ago, Rye Miles #13621 said:

I have some y that I backed off the crimp a tad like this one 

 

This is what I call a perfect crimp. 

[Cypress Sun]

4 minutes ago, Charlie Harley, #14153 said:

This is what I call a perfect crimp. 

 

This all the way!

Nice crimp!

[Gateway Kid SASS# 70038 Life]

The second is what mine look like and they work just fine. 
Regards

    

Gateway Kid

[Colorado Coffinmaker]

 

Hey Rye,

 

Second to the guys that liked your second sample example.  Your seconds is just the Beez Kneez.  Keep up the good work, er Crimp 

[Pat Riot]

I third the second. 

 

#1 looks like a Lee Factory Crimp set too far down. 
If I can find it, I have a .357 Magnum cartridge I over did with a Factory Crimp. It looks weird. Especially since I used my .38 Special die, not the .357 die. 
I have 3 sets of Lee Dies for .38 Spl. One for .357 Magnum, one for regular .38 Spl loads and one for .38 Wadcutter loads. I also have 3 factory crimp dies. Somehow I grabbed the wrong one. 

[Pat Riot]

Found It!

[The Original Lumpy Gritz]

Excessive 

What die are you using? 

You don't want the step down 'wall'.

[The Original Lumpy Gritz]

5 hours ago, Rye Miles #13621 said:

I have some that I backed off the crimp a tad like this one 

Better??

GTG!

[Pat Riot]

1 hour ago, The Original Lumpy Gritz said:

Excessive 

What die are you using? 

You don't want the step down 'wall'.

Read the post above the picture. 

[The Original Lumpy Gritz]

2 hours ago, Pat Riot said:

Read the post above the picture. 

What's the fun in that? 

[Widder, SASS #59054]

Howdy RYE.

 

Here is how you establish 'The Perfect Crimp' in relation to your ammo power.

 

Actually, you can have various 'perfect crimps', so I better explain.

 

If your ammo is lightly powered, the crimp don't have to be so much.   Measure  the OAL and put 6 rounds of your crimped ammo in

your revolver and shoot only 5.  Pull the 6th round out and measure the OAL for any movement.  If recoil doesn't effect the OAL,

then your crimp is sufficient..

Actually, I usually shoot 10 rounds, pull the unfired round and measure.  If recoil hasn't effected the OAL after being in the

cylinder for 10 fired rounds, I'm confident my ammo is crimped correctly.   

 

If you shoot HOT stuff, your crimp will need to be adjusted and do the same test.  Pull the unfired round from the cylinder and measure

its OAL.   Your crimp 'tightness' should be sufficient that recoil does not allow the bullet to move out of the crimp groove.

 

The crimp in your 1st picture is the kind of crimp you might want on .44 mag or .454 Casull ammo.

 

The crimp in your 2nd picture is more conducive to Cowboy power type ammo, which is a nice looking crimp.

 

As others have stated, over crimping can fatigue the mouth of the brass and cause premature splitting.

 

..........Widder

 

[Rye Miles #13621]

6 minutes ago, Widder, SASS #59054 said:

Howdy RYE.

 

Here is how you establish 'The Perfect Crimp' in relation to your ammo power.

 

Actually, you can have various 'perfect crimps', so I better explain.

 

If your ammo is lightly powered, the crimp don't have to be so much.   Measure  the OAL and put 6 rounds of your crimped ammo in

your revolver and shoot only 5.  Pull the 6th round out and measure the OAL for any movement.  If recoil doesn't effect the OAL,

then your crimp is sufficient..

Actually, I usually shoot 10 rounds, pull the unfired round and measure.  If recoil hasn't effected the OAL after being in the

cylinder for 10 fired rounds, I'm confident my ammo is crimped correctly.   

 

If you shoot HOT stuff, your crimp will need to be adjusted and do the same test.  Pull the unfired round from the cylinder and measure

its OAL.   Your crimp 'tightness' should be sufficient that recoil does not allow the bullet to move out of the crimp groove.

 

The crimp in your 1st picture is the kind of crimp you might want on .44 mag or .454 Casull ammo.

 

The crimp in your 2nd picture is more conducive to Cowboy power type ammo, which is a nice looking crimp.

 

As others have stated, over crimping can fatigue the mouth of the brass and cause premature splitting.

 

..........Widder

 

Good advice, I’ll be shooting these from a 73 with. 24” barrel. I normally shoot .38’s but I got my old 73 back and it’s sweet. It’s the only .45colt I have.