Have been doing some reading as far as seating depth in bullets. As I understand it increasing the seating depth (shorter OAL) or increasing the powder charge can greatly increase pressure.
Is there any reason you can't work up a load based on powder to bullet base?
My 9mm measurement for 124g Hornady XTP over HP-38
Measure powder lvl to case rim. 0.308
measure bullet 0.570
measure case 0.741
Loaded OAL 1.148
With these numbers I figure the bullet had 0.163 seated into the casing. not really sure how much it needs to seat.
This gives me a final number of 0.145 between the powder and bullet
I know compression is bad, but is there a set distance or minimum distance between powder and bullet that I can go by?
Is there any reason you can't work up a load based on powder to bullet base?
My 9mm measurement for 124g Hornady XTP over HP-38
Measure powder lvl to case rim. 0.308
measure bullet 0.570
measure case 0.741
Loaded OAL 1.148
With these numbers I figure the bullet had 0.163 seated into the casing. not really sure how much it needs to seat.
This gives me a final number of 0.145 between the powder and bullet
I know compression is bad, but is there a set distance or minimum distance between powder and bullet that I can go by?