I just ran a ladder loading using 700x, 3.7 gr through 4.4 gr, 1/10 of a grain increments. I used mixed brass, CCI 500 primers and 124gr TC Matchwinners. I shot them out of a Canik TP9 V2. I ran the OAL too short at 1.06 and had some pressure issues. The 4.3gr and 4.4gr loadings showed signs of overpressure. I should have loaded to an OAL of 1.100 with that bullet.
I’m using 700x right now because I got most of a 12lb keg, cheap. I now know why my friend decided to get rid of it. I doesn’t meter very well from a powder measure, at least my Lee powder measure. I’m seeing a variance of +/- 0.4gr from my target charge weight. Verify the consistency of charge weights if you’re using an adjustable powder measure.
