Designing the 2-diameter paper patch bullet.

[Distant Thunder]

Gavin,

Length and shape are just as important to be matched to your twist rate whether paper patch or grease groove. I spent more time thinking over the length to go with in my 18-twist .40-65 than any other detail when I went to a 2-diameter ppb for that rifle. Being it was going to be used for silhouette I wanted as much weight as I could get in a relatively short .40 caliber bullet, that meant a round nose bullet. From my experience round nose bullets are more likely to stay well stabilized when working at the upper end of the length for a given twist. So I felt fairly confident at the 1.250" length I went with even though I have been deliberately staying on the shorter side with my bullets and it has been working well. Weight isn't more important than stability especially as the range gets extended.

So far that bullet has been everything I hoped for and a bit more. I'm looking forward to shooting matches with it again next year.

Sure wish I could send you a little of the cold rain we've been having here of late, I've about had all I care for that much I know!