size of conical

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Shooting conicals will depend on the rate of twist in the rifling. If you have a slow twist, like 1/48", no worries. Faster twist is better for roundball, like 1/66",1/72".
Plastic sabot conicals will lead to plastic fouling in the barrel. Something else to consider.
.50 calibre maxi ball with some lube in the rings will work in the slower twist barrels.
 
Yo Brownie, here's some info on maxis from an old catalog (NEI, no longer in business).

maxis.jpg
 
It helps if we know the rifle @Brownie is trying to match with a conical bullet. It would also help if we knew the number of lands and groves as well as the diameter of the land-to-land measurement. Then there is the depth of the grooves to consider. As noted above, the rate of twist kind of sort of comes into play here too. Long, heavy conical bullets perform better with a fast twist in the neighborhood of 1 in 32" or 1 in 24". Slower twist rates of 1 in 48" through 1 in 72" work better with a shorter conical bullet.

What is the conical bullet going to be used for? What range? So many factors must be taken into account when selecting a conical bullet. Are you looking for a conical bullet with a flat base or a Minie' ball with a hollow base?

Sometimes it is just better to stay with the PRB if the performance is good.
 
It helps if we know the rifle @Brownie is trying to match with a conical bullet. It would also help if we knew the number of lands and groves as well as the diameter of the land-to-land measurement. Then there is the depth of the grooves to consider. As noted above, the rate of twist kind of sort of comes into play here too. Long, heavy conical bullets perform better with a fast twist in the neighborhood of 1 in 32" or 1 in 24". Slower twist rates of 1 in 48" through 1 in 72" work better with a shorter conical bullet.

What is the conical bullet going to be used for? What range? So many factors must be taken into account when selecting a conical bullet. Are you looking for a conical bullet with a flat base or a Minie' ball with a hollow base?

Sometimes it is just better to stay with the PRB if the performance is good.
Going to use it in a CVA hawken 1x48 twist. Don't know the land info you are asking about going to hunt with it at distance of 50 to 100 yards. looking at a short round nose type like one made by cva deerslayer if you can find it or the hornady conical pa.
 
I use those Hornady PA conicals in a few of my old CVA guns. They shoot pretty good.
They are a bit difficult to start but go down the barrel easily.
 
With my TC 1 in 48 I had amazing accuracy with the Maxi Ball. I sold it long ago, the stock just did not fit me.
 
I've used .50 maxis in 3 different brand of barrels and they all shoot very well to excellent. Note that there are slight differences in the brand of mold used to make them. My rifles like genuine T/C Maxis a bit better than the ones made from Lyman or Lee molds. When testing in your rifle look closely at the holes in the target to make sure the holes are round and not oval/elipical at all. Just to show that not all is equal, I would have to pound a maxi down my .50 Pedersoli Kentucky pistol with a hammer just to get it started. Good luck.
 
Shooting conicals will depend on the rate of twist in the rifling. If you have a slow twist, like 1/48", no worries. Faster twist is better for roundball, like 1/66",1/72".
Plastic sabot conicals will lead to plastic fouling in the barrel. Something else to consider.
.50 calibre maxi ball with some lube in the rings will work in the slower twist barrels.
you mean slower twist is better for round ball
 
when I shoot conicals out of my .50 I go with the TC Maxi-Hunter in 275 grains, larger conicals just beat me up and burn out nipples faster. :)

plenty of whompability as I have seen it said

but to 100 yards...one can just shoot PRB and get minute of deer all day long
 

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