Sub 1/4moa ammo at range? Rockchucker as fast or faster than properly setup 550??
Some of you guys crack me up.
There are many of us on here that have been loading precision ammo on our 550's for a LONG TIME. This same topic pops up every few months. There are many threads detailing every little question, mod, setup, trick, hardware, etc. that is being posed and argued in this thread. All you have to do is do a little searching....
I've got a 550c, 2 XL650's, Rock Chuck and Co-Ax. NOTHING is faster than the 550c for precision bolt gun ammo... There is ZERO accuracy or SD difference between the properly setup 550c and Co-Ax. The only difference, speed. The 550c wins out every time.
Uniquetek Clamp Kit
Whidden Floating Die toolheads
Area419 Dillon adapter and funnel kit
A&D FX120i AutoThrow and AutoTrickler Bluetooth Setup
Dedicated Case Prep Toolhead
Dedicated Loading Toolhead
1) Tumble your brass when you come back from range in corn cob then run through dedicated case prep toolhead
2) Optional step for those of you that anneal, now is the time to do it
3) Spray all your brass in a plastic bin with 90+% alcohol/Lanolin mix and let dry for 5min
4) Run through dedicated case prep toolhead
Dedicated Case Prep Toolhead
Station 1 - Mighty Armory Dillon Decapping Die
Station 2 - Either FL honed sizing die or FL bushing sizing die
Station 3 - 21st Century TiN mandrel setting final neck tension and ensuring concentricity
4) Tumble your brass however you feel (dry, SS, ultrasonic, etc) But I tumble in corn cob to remove lube. (hint for your new guys that never tested it extensively but, shiny brass from SS and Ultrasonic does nothing for accuracy, it just looks nice and CAN hurt accuracy
5) Run brass in dedicated loading toolhead
Dedicated Loading Toolhead
Station 1 - Mighty Armory Dillon Decapping Die (to make sure flash hole is clear)
Station 2 - Dillon Powder Die with Area419 Dillon Adapter, Drop tube and funnel set to just barely pick up the tube for positive contact
Station 3 - Micrometer seating die of your choice
I have done side by side testing of all of the above scenarios... SS tumble vs corn cob vs ultrasonic.... Co-Ax vs 550c for accuracy and SD, shiny clean brass and primer pockets vs corn cob tumbled and dirty primer pockets.
Im gonna tell you, the target doesnt care down range. no difference...
None of this matters if you dont know how to do proper load development. There is a reason why doing proper load development and selecting the proper charge in the center of your node is... This has also been discussed and explained and proven in many previous threads. If you change lots, you drop a charge a little high or a little low of your center node charge, its not going to matter downrange.
If you dont know how to do proper load development, and are shooting a load not in the node, not in the center of the node, on the edge of a node, any slight deviation in powder charge or powder lot will cause havoc down range. This is why proper load development is SO IMPORTANT.