Ron, I believe in the Twist Calculators, Especially when you get out at Some distance, A Bullet that shoots Good to 300 Yards might Go AWOL at 4, or 500 Hundred Yards? But like i have said before, i have seen Several Different Bullets Shoot LIGHTS OUT Good to near 300 Yards that according to the Twist Calculators were a NO GO
Accurate Molds makes a Great Bullet Mold, i have MANY of them. But there is a Difference in an Accurate Mold VS Say a BACO, Accurate Molds has a Tolerance Window of .002, And the way i cast (HOT) i am usually .002 Out on the BIG End, Example being, With a .442 i usually end up .444, Which is not a Big Deal since i have a .442 Sizer. The other thing about Accurate Molds is he Can Not Cut a Round or Pointed Nose, it HAS to have a Meplat, at Smallest .18, This is due to his Tooling (Lathe Boring)
With a BACO Mold, if you order a .443 you will get a .443, They can also cut a Rounded Nose. In short, BACO Molds are EXTREMELY Precise, Jim told me that he Shoots for a 1/2 a Thousandth, I own 5 of their Molds and ALL of them Cast SPOT ON What they are Supposed to, BACO Molds are CNC
I know i pictured this above, But wanted to ad it in this Post with the Twist Calculator, I bet this Bullet would Shoot Darn Good in the 1:30 Twist, It is a PLEASURE to Patch, You can Patch it DEAD ON the Bearing Surface due to being able to see it, and it has a Good Bearing Surface Length. This Bullet is also Fun to Shoot due to it’s 375 Grain Weight
Cast of 1-40 Alloy it would be right about 375 Grains (It weighs 377 Grains Cast of PURE Lead) it measures 1” inch long
Cast of 1-20 Alloy they weighed 368 Grains, And Shot 1 Ragged Hole through my 1:20 Twist Rice Barrel
Here is that Bullet Plugged in the Twist Calculator, This thing would Shoot in the 1:30, i am confident of it