Originally Posted by
Muley Hunter
If i'm not mistaken. They came out with ML primers, because the stronger 209 primers were moving the powder before igniting it.
I belive it was Cecil @ PR Bullets that first revived the thought that the stringer 209 primers could in fact push the bullet off the powder before the actually ignition of the powder started. Which could if it happened cause a problem in grouping, if not even a larger problem.
Because of these problem PR Bullets developed the 25 ACP ignition system for the Omega using a small rifle primer. It is a little to weak for BH but switching the small rifle primer to a small rifle magnum primer. Cecil later developed another device that looks like a 209 primer but in it you can push out the primer and install the small rifle primers again.
So, the Omega has no problem shooting BH 209, and it doesn't need a magnum primer like other breech plugs. All i've used are the CCI 209m primers.
CCI-209m primers are Magnum primers they are the second hottest primer on the market. That is what the 'M' in the title indicates. CCI does make a midrange range primer and it is labeled with just a plain CCI-209.
Can I get more accuracy by using a softer primer? Not a ML primer, but one of the 209 primers that's on the bottom of the list of power output.
I do not shoot as much BH as others do but I have found the W209 works very well for in the ignition of BH-209, and in an Omega plug it should even work that much better.
I have experianced POI shifts using different primers but accuracy really has not be effected.