chevrofreak

No riser. I prefer absolute cowitness height on an AR. It feels more natural to me.

Precision Delta JHP bullets are only 8.5 cents each if you buy 2,000.

What about optic lens smoke? I fired 5 rounds of 9mm major using a 115gr Blue out of my Glock open gun and it smoked the lens up badly.

10.5gr of AA7 under a 115 feels great, isn't overly full, and I didn't find it dirty at all.

I run 9gr of 3n38 behind a 115 and it is very full, but the kernel shape seems to help keep spillage to a minimum.

Also, you will have to load the flat points significantly shorter than their round nose bullets.

I wouldnt use any of the RMR FMJ bullets in an open gun. Great bullets, but they will cause comp leading.

RMR hardcore match I hope?

Most Holosun sights are designed for absolute or lower 1/3 cowitness on an AR-15.

I run the RMR 124gr FP FMJ over 3.8gr of titegroup, but at a slightly longer OAL than that.

Somewhere around 2,000 before I bought a CK. It has over 20,000 on it all together, and I've been shooting it for about 18 years. It has even withstood some accidental 200pf+ loads when I was brand new to reloading 9major. Blown primers and stretched case heads didn't even phase it. It is a a stout gun.

I have 503's, 515's, a 403, etc, and I would take the 510C for a PCC over any of them. However, I feel the 503C is better for a fighting gun.

I like them hot. I use 10.5gr of AA7 with a 115gr Everglades JHP V2 at about 1540fps and 9gr of 3N38 with a 115gr PD JHP or Hornady HAP at about 1510.

I like slower powders like AA7 or 3N38 with 115gr bullets in my Glock open gun to make it shoot flatter with the lack of poppel holes.

My Ruger PC9 will smack a 8" steel plate consisently at 100 with my 124gr RMR flat point FMJ and 3.8gr Titegroup load, just by aiming at the top of the plate. It groups about 1" at 25 yards with that load. My girlfriend tried doing the same thing and didn't hit the plate one single time. The shooter makes as much difference as barrel and ammo.

I am a Holosun whore, owning 8 of them across many models and firearm platforms, and after recently acquiring an HS510C, I dont think there is a better bang for the buck PCC sight made.

I am a major Holosun fan; I own half a dozen of their red dot sights, but, I do not think that the 507C has a large enough window for open use.

I like the Everglades mount. Especially with a DPP ?

Flipping the stem will often result in inconsistent flat spots on the tip of the bullet. I would make sure there is enough bell on the case mouth, which makes seating easier. Lubing your cases can help quite a bit. Try dumping them in a gallon Ziploc bag and spraying a couple quick blasts of One Shot, DCL or a homemade case lube into the bag and tossing the cases to coat them evenly. When I was new to reloading I didnt bell my cases mouths enough, and loaded without lube, which resulted in some deformed noses or ogives depending which way I had the seating stem facing. Now, I only see the ring if I am loading a plated bullet with a compressed load of powder.

I've loaded AA7 and 3N38 to similar (ish) power factor in 9major with a 115 JHP and they are very similar, in feel with a slight edge going to the AA7 for the dot not leaving the window at all, and the gun being a tad quicker back on target. That was with 9.0gr of 3N38 at 173.4pf and 10.5gr AA7 at 177.1pf. The 3n38 fills the case far more, but if I slowed down and stuffed 9.5 in it, things might even out. The AA7 has far less case fill. I also found AA7 to not be very dirty at all; just a bit of yellow dust left behind, but far cleaner than HS6.

When I first started wet tumbling I apparently didn't rinse the brass well enough, and baking it in a 200F oven on a perforated pizza pan caused that remaining residue to make my brass look very tarnished. I have since started rinsing better, and I now air dry rather than baking and the brass comes out very shiny.

Very sharp recoil. 124's and 115's are softer feeling to me. I run 115's almost exclusively now. I've seen people talk about "the dot not leaving the window" and thought it was total BS. That was, until I tried 10.5gr of AA7 behind a 115gr JHP.

I've shot a 147gr RMR hardcore match over 6.6gr of HS-6 at 1.160", but it wasnt enjoyable

I have a Hornady single stage mounted next to my 650 that I leave a universal decapping die in. It takes less effort to pop out an upside down primer than it does a new, unfired one. The sharp edge of the primer has nothing to hold onto, unless it went into a very swaged primer pocket. I've never had one go off, and most get reused. If the primer was mangled rather than seated upside down, I quickly chamfer the primer pocket on my Lyman case prep before I waste another primer in it.

Buy 4,000 of the 115gr JHP V2 at $349 and it is 8.726 cents each. Buy 2,000 of the PD 115 JHP at $170 and it is 8.5 cents each. Not a big difference unless you can only afford 2,000 at a time.