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View Full Version : Smallest Rifle Conical Diameters



Good Cheer
12-18-2010, 12:01 AM
What's the smallest diameter rifle cast conicals you've tried out?

mooman76
12-18-2010, 01:30 AM
I've tried 32 but they didn't do well in my gun. needs a tighter twist.

Good Cheer
12-18-2010, 11:40 AM
I'm working with 40's in 16" and 48" twists. Was wondering what experiences could be relayed about smaller calibers.

gnoahhh
12-18-2010, 12:18 PM
I have an old Remington-barreled cap lock .32 half-stock rifle (circa pre-Civil War) that sprays PRBs in a pattern. I tried pure lead 95 gr. .32 RN pistol bullets and got passable accuracy with 15 gr. FFFg. I haven't gotten around to checking the twist rate and investigating the perfect size for a conical.

mooman76
12-18-2010, 01:11 PM
basically the smaller the caliber, the tighter twist that is needed. Unfortunately the smaller calibers usually don't have the tighter twists needed and there is very little selection in conicals for the smaller calibers. Some have to resort to trying to use regular pistol bullets.

skullmount
12-18-2010, 02:25 PM
What's the smallest diameter rifle cast conicals you've tried out?

.350 in a 14 twist

skullmount
12-18-2010, 02:29 PM
For the other, it would be in my .410 White, I think its a 16 twist....I have tried from 210 grainers all the way up to 420 or 430 grainers, anything around 400 grains will shoot pretty to very well out of it.

Good Cheer
12-25-2010, 11:02 PM
basically the smaller the caliber, the tighter twist that is needed. Unfortunately the smaller calibers usually don't have the tighter twists needed and there is very little selection in conicals for the smaller calibers. Some have to resort to trying to use regular pistol bullets.

Yeah you're right. There's very little between barrels set up for round ball and, at the other extreme, fast twists for long range heavy bullets in "deer hunting" calibers. The TC Seneca and Cherokee were perhaps the closest things to in betweener plinkers.
I've been experimenting with GM .40 barrels with a 48" twist. The Lee 195 grain .41 SWC has been showing some promise but you have to push it pretty fast to keep it straight.

Good Cheer
12-25-2010, 11:06 PM
A .358" groove barrel like for a .38 Special could be worth checking out. Could make an excellent plinker. A flinter would be a whole lot more fun than a '92 lever action.