NOE 321471 215 gr round nose question

[wmitty]

Saw where this design is on their weekly special list of moulds. They show this boolit to be 1.215" long... would a 1-16" twist barrel stabilize this boolit?

[wmitty]

I plugged the required data into Berger's stability calculator and results showed stability to be marginal (1.19) and the suggested min. twist rate was 1/13". Guess it wouldn't be a good choice for a .32 Special. Anyone using a boolit close to this length in a slow twist barrel?

[frnkeore]

I've shot the original Lyman 323471 in my 32/40 target rifle with a 15 twist and it's stable at 2150 in it but, it won't stabilize in a 16 twist.

I have the NOE version, also and if your thinking of using it in a 32/40, it's not a good idea. The bore diameter on a 32/40 is .315 and the area of NOE's that rides the bore is only .311 in 20/1 alloy.

Frank