1:20 Twist
 

I am relatively new to blackpowder and for a while now i have been trying all sorts of bullet weight combinations and im still all over the place with this gun its a traditions inline bolt action with a 22" barrel and a 1:20 twist any suggestions from the experts as to which bullet i should use id like to stick with a sabot but whatever works also im using triple 7 pellets 100 grains??????????

RE: 1:20 Twist
 

What bullets have you tried?

I suspect that with a 1:20 twist you'll get the best results with a 200 grain ShockWave driven as fast as you can get it to go.

RE: 1:20 Twist
 

You will likely have issues finding an accurate load with that gun. They stopped making the 1-20"s because they were so incredibly finicky. Best bet is to reduce powder charge to 80gr and go from there. I'd go with the bullets in the 250-300gr range too.

RE: 1:20 Twist
 

I assume it is a 45cal rifle.

Ifyou would be willing to mail ME that rifle.....I'd do some indepthtesting with many different bullet/powder combos and then send it back to ya, ready to go hunting:);)

Waddya say?:) I am serious!

All I shoot is 45cal rifles, and I've got A LOT of custom bullets and sabots that may prove to be the Sweet Spot for your 1:20 rifle:)

RE: 1:20 Twist
 

2LungKing
I have a program that calculates the bullet to twist.
You need a bullet of .40
cal and 1.2 inches in length.
I am assuming its a 45cak because of the twist.
Hope this helps.
Lee

RE: 1:20 Twist
 

Yes the gun is a 45 caliber Lane Nebraska thanks but no thanks Lemoyne what weight do you think would work by your calculations????????

RE: 1:20 Twist
 

2LungKing

OK ok, you saw thru my ploy to finally get my hands on a fast twist rifle for testing[8D]:D

HowBout I send you 20-30 different bullets with sabots, so you can test them, all for free?? I mean they are just extra weight I'm carrying in my shooting bag, and they sure don't work in my 1:30 twist Disc Elites....

Really, you'd just have ta shoot 2 of each at a large 25 yard target to see if they will group/stabilize in that barrel. Sound like a good deal?

RE: 1:20 Twist
 

I talked with a couple guys with these rifles when they came out, they ran all the .40 and .357 bullets through them with little luck until they slowed them down. My best guess is the sabots like to jump the rifling when it is that fast, or are spinning fast enough down the barrel that the bullets are not spinning right along with them. Just a guess.

RE: 1:20 Twist
 

Good point spaniel. I never thought of the likely of sabots jumping the rifling when I suggested pushing 200 grain SW's as fast as possible. I still think the 200 SW's are probably the right length bullet for that twist.

RE: 1:20 Twist
 

200gr SW measures .968"

Charlie

RE: 1:20 Twist
 

The key facter in the bullet is what material it is made of , with a jacketed lead bullet I would guess about 240 to 260 would be a good area, you might check out
http://www.prbullet.com/
If you can check the specks of the bullet for length. You might check with Lane to he is very sharp on an awful lot of this stuff, you also will have to get the right fit that takes the right sabot as well as the right bullet. Lee

RE: 1:20 Twist
 

Heavy, Heavy conicals. 400+ grains. Just my opinion. Should shoot these big bullets great. Tom.

RE: 1:20 Twist
 

Right you are Tom. Could possibly start as low as 360g. And I wouldn't venture anymore than 70grains, of any powder;)

The Bull Shop: http://bullshop.gunloads.com/ or No Excuses: line of conicals would be a good place to start, and would have to slug the bore and get the actual barrel diameter measurement.

Off the shelf bullets that might work are the 300g Platinum PowerBelt, And you could pay the big money for this bullet, and have it shipped to ya from PRBullet.com: Ultimate 1 QT .45 Polymer Tip - 360 grain

RE: 1:20 Twist
 

prbullet offers the heaviest .40cal bullets available, 240 and 260gr. I would certainly try the 260gr in that rifle as it was originally designed for the higher rpm of the Savage. Start low and work up.

I've got a supply of the ligher Dead Center weights, I could send you a few of each if you want to try them instead of paying quite a bit straight from prbullet just to try them. I've got some 240s too but I want to test those one more time myself before I let them all go ;)

I've got a ton of 250gr QTs too. Another good, cheaper option if maxiumum ballistic coefficient is not your primary concern.

Sadly, no one yet offers a jacketed .40cal bullet heavier than the 200SW. I am considering the modest purchase of software to design one based on some ideas I have, but it looks like it would cost me around $5,000 for basic swaging gear to make one (yes I checked into this!). Unless I was convinced of significant demand it'll remain a pipe dream for awhile.

RE: 1:20 Twist
 

Spaniel, you might try having Dan at Mountain Molds make you a paperpatch style .40 in about 250 - 270 grains. I think that would be a winner and came real close to ordering one myself. Casting is certainly a cheaper route to take.

He could do something like this

RE: 1:20 Twist
 

Check out some of the traditional suppliers. they make a heavy conical for the 40 caliber Gibbs. And you can also buy some .451 heavy conicals for the Whitworth Rifle. I have a .451 mold for my Whitworth. If I remember it drops right at 400 grains. I bought that mold from Buffalo Arms. However I like the idea about the paper patch bullets. Tom.

RE: 1:20 Twist
 

Thanks, but for close stuff I have plenty of options. Most of my thoughts and curiousity is for long range options (ie pointy bullets!). The 200SW is NOT the best long range .40 thing that will shoot in a ML, only the best one currently marketed.

Hey, I used to be a scientist, I have to tinker with such things!!