To Crimp or not to crimp cannelure and purpose?

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"...and aids in ignition..." Crimping does nothing for ignition. The powder will ignite or it won't with or without a crimp.
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Once again,Mr O'heir,you have boldly stated as fact something that is not true.

If you load up full power 44 Magnum loads with H-110 and skip the crimp,the cylinder throat offers no resistance,then you have forcing cone and cylinder gap.The primer moves the bullet before there is enough heat/pressure to really light up the charge.

It will shoot,but you may get black cases,unburned powder,and inconsistant velocity. And accuracy will suffer.
A good strong crimp provides for a little back pressure.
 
FMJ may work fine for hunting, a lot of people have reported good success with match bullets. Frankly with a 06, the last thing you want is a mushrooming in a deer blowing half the other side off.

If your shot is good it will hit the heart and lung area and it will die. I hit a Caribou at 75 yards one time (fog) and it made a mess of the far shoulder (managed to salvage most of it with carving - burger and stew is good!)

A while bunch of Axis troops died in WWII (not to mention Chinese) when hit with an FMJ.

I never crimped rifle hunting bullets (7mm Rem mag) no issues. I don't crimp target bullets.

I do roll crimp revolver loads, but I do it in a separate step as getting the seating and the crimp sequenced right are a royal pain.

I do taper crimp 9mm.
 
I recomend hunting bullets for hunting.

A military type FMJ,which I assume the OP's bullets are,is made to shoot through some cover.The point is closed and the base is open.The jacket is tough.The bullet may bend,yaw,or tumble in game.Or not. The animal may suffer a slow death

A match bullet has a closed base and a very small hollow point.The jacket is thin and made with uniformity in mind.
It may penetrate a bit then come unglued.It may cause a spectacular kill and mess up a lot of meat. Or not.

I figure the bullet manufacturers know their product.

I use hunting bullets on game
 
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