Reloading for AR15 to crimp or not to crimp?

[dennishoddy]

I put a very light crimp on AR rounds, and developed my loads around it. Crimped or uncrimped will likely produce different results on the target, so pick one and run with it. Tune the load accordingly.

 

[Gunbuffer]

Always crimp AR ammo

 

[Bahick71]

I light crimp for ar, but same as above worked loads from the start with same
Crimp. Should be good either way

 

[Profreedomokie]

Have never crimped for .223/5.56mm and fired thousands of rounds in 8 or 10 semiautos without any issues.

 

[Boehlertaught]

Since a dual die is available it's too easy to crimp and I think it may be safer because bullet set back can be dangerous.

 

[kwaynem]

I loaded up several with no crimp shot most of them then measured the ones that were left in the magazine all measured the same with zero setback

 

[swampratt]

I loaded up several with no crimp shot most of them then measured the ones that were left in the magazine all measured the same with zero setback

Great job.

This is sometimes the only way to find out what the answer is for your project.

Do it for yourself and find out.

Gear heads will get a kick out of this one.
GM HEI VS GM single point distributor.

Both dialed in and working at 100% I went quicker in the 1/4 mile with a Single Point.
2 tenths.
Same timing curves same spark plugs and gap.

Not what all the magazines and internet goo roos will tell you if you run a single point distributor.

They say get an HEI.
Big Allen computer oscilloscope watching spark graph and voltage the single point had more spark energy at 4500-7000 rpm.

You must do it yourself and find out sometimes.