Traditional and accurate

[Bad Karma]

A cotton ball would be very convenient. It seems like it would be tedious to cut a perfect circle in cardboard to put behind the PA.

Ne really sure the cotton balls are just cotton, no synthetic materials for obvious reasons.
Tedious? Oh yes… most people use a drill mounted wad cutter. When I used the cardboard wads I made them from cardboard milk boxes or something similar. Waterproof so lube from the bullet won’t migrate into the powder charge and they do protect the base of the bullet.

 

[mkpatrick]

I've taken another look at that Lyman Great Plains. 1 in 24 twist I could fire a lot of different types of rounds. On Track the Wolf they show below the rifle they show those big 378 grain projectiles. Thats a big slug.
It doesn't say though the maximum load I could put behind that safely. I'd like to get out more than 200 yards. Seems like a heavy round like that would be dropping fast.
I could fire the PA conicals too or a lighter conical. Maybe even that Lee REAL cast bullet.

Anyone else have one of these Lyman's?
What kind of accuracy and range are you getting?

M

 

[longcruise]

In a 50 caliber it's only eight grains heavier than a large 50 maxi. Also, given the huge lube grooves of the Maxi, the Maxi is probably longer.

So, conventional wisdom says that a 1:48 should stabilize the great plains just as well as a 1:48 TC stabilizes a Maxi.

Overall performance should be similar to a Maxi and safe loads should be the same.

 

[mkpatrick]

Do you know what the max load is for a rifle like that? (And hence approximate effective range)?

 

[longcruise]

Well, the TC owners manual should have load data. You can find it here. Owners Manuals - Thompson/Center

I killed an elk with a Maxi and 70 grains of goex ff at 131 yards. I'm NOT making a recommendation with that. Just providing perspective.

 

[mkpatrick]

Oh OK thanks, I'll look at that

 

[Bad Karma]

If using the maxi ball, lube only the bottom groove…

 

[mkpatrick]

70 grains with a maxi. How much do those weigh? Dropping an elk at 130 yards says that load and that round is no joke.

 

[nkbj]

Idaholewis' .50 x 48" thread got me to scratching around for fifty stuff in the fun room. Found a NOE mold #503485, an inch long heavy semi-wadcutter. Some how I just don't think those 48" twist barrels are gonna work with that one.