Crimp for 8 shot Model 627

CScott · #1 03-20-2013, 10:14 PM

While shooting some .357 handloads through my Mod 627, rounds #7 and 8 bound up the cylinder because the bullets had jumped the crimp. I have used this load for a long time with about the same amount of crimp but always in 6 shot revolvers of various types. 158 gr LSWC over 14.5 gr of 2400. So be sure to use an adequate crimp in those 8 shooters! I enjoy this revolver a lot, you Mod 27 guys (like me) should not sell this gun short till you try one.
Scott

Nevada Ed · #2 03-21-2013, 02:06 AM

Just goes to show, that you can learn something new every day.....................

funny how you never had #6 slip in the old "Six shooters" with the same crimp.

I have a light, medium and Heavy crimp for my lead loads
per target, medium and "Mag" loads with my 158 Lswc's.
At 1320 fps a HVY crimp was needed with just six rounds.

Skunkhome · #3 03-21-2013, 02:43 AM

Nothing like having an automatic inertia bullet puller. Try turning the crimp die down about 1/2 turn and see if that does the trick.

Cdog · #4 03-21-2013, 05:23 AM

Many years back I had trouble keeping 300 grain .430's in every brand of .44 mag brass I tried.

This was prior to Lee's factory crimp die coming to market. The FCD's came out about the time I gave up shooting heavy magnum loads, but it did work.

I'll stoke up a .45 Colt a bit now, but that's about as strong as I go. The seater's built in crimp does just fine.

Have you tried randomly loading six, or are you pretty well convinced it's simply the longer bumpy ride causing it?

AzRedleg · #5 03-21-2013, 05:43 AM

Are you using RP headstamped brass and Lee dies?

MikeyB · #6 03-21-2013, 08:37 AM

Like Cdog I'm also using Lee FCD's for .357's and .44's.

CScott · #7 03-21-2013, 04:58 PM

I use RCBS dies and crimp with the seating die and load a variety of headstamps. For some time I have been thinking about using a different system to crimp but never really had a good reason to do so until now. Tell me about the Lee dies you mention. And what do you like about Remingtom brass?
Scott

cjw3 · #8 03-21-2013, 08:05 PM

Seat and (adequately) crimp in separate operations and I think your problem is solved.

Fishslayer · #9 03-22-2013, 03:15 AM

Probably two things happening. The last bullet has two more bumps to deal with and the 8 shooter would weigh less by whatever the steel from two chambers would weigh.