357 magnum bowling pin bullet?

[Deja vu]

At a local gun/reloading shop I was looking around there bullet molds. I found one that is marked as a 357 caliber 240 grain bullet. It looks like a cross in a wadcutter and a RNFP bullet.

My question is this. Will a 1 in 16 twist rate barrel stabilize a bullet this heavy?

 

[Unclenick]

Sounds like one of the many popular wide flat nose designs for hunting, but maybe from a rifle.

Learn the length of the bullet. Most .357 Magnums use the standard 18.75" twist. Plug your numbers into the stability and twist estimator, here, and see what happens. I would doubt you'll get it going over 1000 fps, so you might try that for velocity. You are looking for a stability number over 1.3, or it may cause problems.

Chances are, if it was intended for .357 Magnum, it will be OK in it. If it was intended for a .358 Winchester with 12" barrel twist, it may not fly in the pistol.

 

[Salmoneye]

Dunno about the twist for stabilizing, but it is indeed a bullet designed for bowling pin shoots...

Penn sells one that they say drops at 230gr...

It may be the same mould...

https://www.pennbullets.com/38/38230tndrhd.html

ADDING:

Upon reflection, I am betting UncleNick is closer with his suggestion that it is for a rifle...

The diameter makes me wonder though...Most cast for rifle is .358" and up...