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Crimp start on new Federal Top Guns

812 views 17 replies 9 participants last post by  dogchaser37  
#1 ·
Purchased some Federal Top Gun recertified primed hulls which are not crimped and can't get the crimp starter to give me a good 8 point crimp start. The crimp starter is a metal super crimp starter and I've tried gently compressing the hull several times before finishing the stroke, no good. The machine is a MEC 650h, 12 gauge.
I've had no issues with new Cheddite hulls so i'm guess the Federal hulls are made of a thicker plastic extrusion. I'm gonna try a 6 point crimp starter but would rather not keep making changes to the machine as once fired hulls reload very nicely. Any ideas?
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#3 ·
If they're just straight tubes, they probably aren't skived either.


Personally unless you have a truckload of them, I'd knock the primers out, throw the hulls in the trash, load the primers into once fired hulls, and call it a lesson learned.
 
#5 ·
Yep, in new hulls I skive them to make it easier, I use 6 pt crimp for more defined larger petals that can be better formed on precrimp, I hold the precrimp down for like 5 seconds or more to set the folds better, and I go immediately to final crimp so the plastic memory doesn't reduce precrimp. And I do precrimp 2 or 3 times, spinning hull between to ensure all petals well formed. NOT A SPEEDY PROCESS, I only do this for hunting loads I am forced to use new hulls for.

That bpi skiver that skeetman showed works decent.
 
#8 ·
Thanks for the replies, did'n think about the lack of skiving, I'll get one from BPI. Federal Top Gun shells are 8 point crimped, not 6 point. I figured I'd save time and money with these new primed hulls, guess not if I have to start buying additional tools to make them work.
 
#10 ·
Make this easy on yourself and your wallet. Use a 6 point crimp starter, the one that came with your machine. Be sure to creep up on the setting, don't try to set it really deep. Start with it a bit on the shallow side and only drop it as much as you need to get the 6 tips touching. Use a nice smooth stroke. It is easier to get a nice crimp start on a new hull on a single stage machine.

The way the crimp starter is set right now, is too deep.

There is no ballistic advantage to an 8 point crimp.
 
#15 ·
Like Dogchaser37 said, with proper adjustments you can get excellent crimps. Something isn’t adjusted properly if those are the results you’re getting and or your stack height is off. In my unprofessional opinion you don’t need more equipment to get the results you’re looking for. A little more research and time pulling the lever and you’ll be well on your way. Listing the components of the load might help for others on this site to direct you to the results you’re looking for.