Twist rate and bullet weight 44 caliber

[forrest r]

The GC would seem to grip the rifling better?

Between the gc and bottom drive band together they make a long bottom drive band compared to the keith 429421. And the gc does what it's supposed to do, seal the bbl which leads to accuracy.

Other then that the h&g #142 and the lyman 429421 are pretty much the same. Same oal, same amount of bullet get seated in the case same surface area with the #142 gc and 3 drive bands vs the 429421 3 drive bands.

 

[Jeff Flannery]

44 Magnum...

No luck in Marlin 1894 with 240 gr, with microgroove rifling. I blamed it on the type of rifling. Never tried lighter/shorter bullets.

Your Win should have better rifling. To get the 240 gr bullets to shoot accurately, velocity may need to be at maximum velocity? 1400 fps + & 15 BHN or harder. If you believe twist Rate Stability Calculators.

On paper, the shorter 200 gr bullet should work with a 38 twist? But not available from Mo. Bullet Co.

I just started casting Lee's 200 gr to try in the Revolver. Tried the old Lyman 42798 , 205 gr years ago in revolver. . Didn't work. But the Lee is larger in diameter.

Its the length of the bullet that matters most when matching to twist. .594" VS. .766"

View attachment 963805

I have a marlin 1894 44 mag . I'm trying to get loads that work and can't seem to find any that shoot better than about 4" at 50 yards./ Any suggestions?

 

[CraigC]

I got my Marlin 1894S model in 1998 and my Cowboy 20" in 2006. The "S" has microgroove rifling and the CB has Ballard rifling but both have the stupid-slow 1-38" twist. Conventional wisdom holds that the twist rate should stabilize up to 300gr and I have found this to hold true. My "S" model shoots well enough with the 270gr Gold Dot that I could be called a liar. By "well enough" I mean sub-MOA. The CB model shoots my 240gr at 1400fps plinking load under 2"@50yds and so that's all I've ever shot in it. So I'm going to go out on a limb here and say that if a bullet 300gr or less does not shoot well, it ain't the twist rate. I would look to other causes. Meanwhile, hope and pray that this is something Ruger fixes about Marlin.