I am seating the above bullet with a COL of 2.495". At that length, it just slips into the loading gate and then it cycles, chambers, extracts and ejects very smoothly. The front band is seating nicely in the throat and nice light kiss by the lands.
The load development, so far, is only with RL7. I am finding 35 and 38 gr of RL7 lloking like sweet spots so far. 35gr is giving me a little over 1700fps and 38 gr is getting me about 1840fps. My two groups of three shots with 38gr were .4" at 50 yards and 1.25" at 100. I am improving some things in the loading process that should lead to improved accuracy.
I am using the Lyman M die and I believe that really helps me get these bullets stuffed in the case without getting cock-eyed.
Old Huckleberry design next to new Huckleberry. Notice how much further the front drive band is out in front of the crimp groove.
In this pic, the Huckleberry stands next to the Beartooth 405gr WLN DCG and others for size comparison. L-R- Hornady265FP, Hornady 300gr XTP, Barnes Buster 300gr, Ranch Dog 432-350, Hornady 265 FTX, Beartooth 405gr WLN DCG
50 yard group with 38gr RL7
100 yard group with 38gr RL7