Heres a few that I feel are not always easy to wrap your head around or under stand in easy terms.
we will keep it simple and keep it to bolt action rifle loads
1. powder burn rate Fast or Slow
I was told by a few old timers
A: Use the slowest powder that ignites consistently and completes its combustion in the barrel length you have
B: use a powder that will give the bullet a solid shove all the way out the muzzle
This was explained to me that the powder gas is still expanding as the bullet leaves the muzzle?
2. Barrel Twist
A: use the slowest twist that will stabilize the projectile and not cause excessive RPM
This makes sense to me and it will show its face in cast bullets.
I can run my cast bullets to about 140,000 rpm before accuracy just drops or I get a little poof of a cloud at 20 yards.
Do you have a sweet spot where your guns just shoot their best?
For me I seem to get the best accuracy out to 300 yards- i dont get to test beyond that. Only time is NRA service rifle at 200/300/600 that I just load 24gn of varget and a 77 grain bullet and let thrm fly
My best accuracy seems to come between 2450-2600 fps out of 1/10 twist barrels with 130-168 gn bullets? Seems pretty soldid across my bolt guns.
I know for energy retention, fighting the wind , less time in flight higher velocities helps but its not always my most accurate/consistent load
we will keep it simple and keep it to bolt action rifle loads
1. powder burn rate Fast or Slow
I was told by a few old timers
A: Use the slowest powder that ignites consistently and completes its combustion in the barrel length you have
B: use a powder that will give the bullet a solid shove all the way out the muzzle
This was explained to me that the powder gas is still expanding as the bullet leaves the muzzle?
2. Barrel Twist
A: use the slowest twist that will stabilize the projectile and not cause excessive RPM
This makes sense to me and it will show its face in cast bullets.
I can run my cast bullets to about 140,000 rpm before accuracy just drops or I get a little poof of a cloud at 20 yards.
Do you have a sweet spot where your guns just shoot their best?
For me I seem to get the best accuracy out to 300 yards- i dont get to test beyond that. Only time is NRA service rifle at 200/300/600 that I just load 24gn of varget and a 77 grain bullet and let thrm fly
My best accuracy seems to come between 2450-2600 fps out of 1/10 twist barrels with 130-168 gn bullets? Seems pretty soldid across my bolt guns.
I know for energy retention, fighting the wind , less time in flight higher velocities helps but its not always my most accurate/consistent load