Hello, new guy here. Looking at getting back into PRS-style competition (ran 6mm creedmoor a few years back) and trying to build a new 6 dasher rig. Thinking about ordering a preferred barrel blanks barrel for Lapua Dasher with .104fb and .274 neck (w/alpha reamer?) Also planning on running Alpha OCD brass and thinking about a SAC modular sizing die but I'm not sure if I need the Alpha Dasher or the regular dasher die...why is this so damn confusing? Norma vs Lapua vs Alpha legacy reamer vs wtf...
I built a 6mm Dasher with finish reamer 104" FB and .272" neck, standard Wilson bushing dies ...works terrific with Alpha brass, very accurate, and takes my high pressure loads as well as target loads very well. Bartlein 7.5 Twist 28" M 24. Works with bullets from 55 to 115 gr.
58 gr vmax 4100 fps for varmints. 107 SMK 3134 fps 110 gr SMK 3085 fps, 115 Dtac 3020 fps, for speed...or RL 15 and Varget for 105, 107, 108 gr Berger or Sierra for tiny groups in 2950 to 3020 fps area. Also recommend Remington 7 1/2 primers for Alpha brass as they are slightly beveled on the front and seat normally, whereas CCI are square and quite snug, with new Alpha brass...just load and shoot... no fireforming, expect small groups.
I "chambered" my own barrels, (no, I did not, "spun it up", morons, that statement tells me all I need to know about you!)... and set it up with Alpha brass as the go gauge and the go gauge with slight resistance. Super accurate, no recoil.
With 110 gr SMK at 3085 it's good for way past 1000 yds, if you're interested in that.