That 30° shoulder will hide pressure, especially if you have a tight chamber. Be careful. Watch for primer cratering....and as already mentioned, watch your velocity.
Good luck
I lost a bunch of pictures when I lost an old phone...the Bell 214B is a hotrod climbin' machine! Wow memories...this is Dora Lake on Prince of Wales Island. Steep ground, he has a 200 foot longline on and the ground I'm on looks just like the other side of the canyon... vertical bluffs with...
I think it was 1992...Crab Creek, near Craig, AK on Prince of Wales Island. Sitka spruce 10.5'. The shortest length for export was 13'10" I was ripping them for a 214 Bell helicopter...they only lift 8,000 lbs
066 Magnum Stihl for gas mileage and low vibration.... Husqvarna 3120 for power
The 72" bar is actually a Madsen hot-rodded 090 Stilh in the photo
The 3120 has a 60" Cannon bar