I have an 1894 in 44 mag. I believe it was made in 2007. I was having problems getting it to shoot and was told it had a 1 in 38 twist and to use lighter bullets. I had been using 240 gr. Recently someone told me to count the lands and grooves and if it had 6 (which it does) then it was a 1 in 20 twist. Can anyone verify that? It still doesn't shoot very well but at least I can try heavier bullets if that is true.
HavasuMike
It's pretty easy, with the aid of a bore light or such, to look down the barrel from the muzzle and follow a single land from breech to muzzle and count the number of turns.
A 1 in 38 twist will have a tad more than half a turn in a 20" barrel. Of cause, a 1 in 20 barrel will have 1 full turn in the same length.
Hope this helps.
Mark.
A 1 in 38 twist will have a tad more than half a turn in a 20" barrel. Of cause, a 1 in 20 barrel will have 1 full turn in the same length.
Hope this helps.
Mark.
As far as I know all 44 mags are 1-38 twist. They also have a large groove diameter, my 2006 comes in at .4315". It shoots the Hornady 240 grain XTP (.430" dia. ) over 23 grains of 4227 pretty good.
Alternatively, you can take a cleaning rod with a brush on it (one for a .44 cal) run down to the end of the bore then start it back by pulling it about 1 inch. Put a piece of masking tape on it where it exits the bore and mark the top of the tape with a line alone the bore. Continue to pull it until it makes one revolution (line is facing up again) then just measure the distance from the tape back to the end of the bore and you will have the twist rate as in 1 turn in X inches.
Lp
Lp
Its 1 in 38" and I get "one holes" with many loads.
There are load variables and you have to find the loads and bullets it likes
Very important, with the slower speed of the bullet, the recoil can throw accuracy off before the bullet exits the barrel. You have to hold it still like a blackpowder rifle. I've seen folks spray whitebox 240 all over a target but put 180 or 225 FTX in great groups because they are much faster
You'll likely have to find one load and stick with that
There are load variables and you have to find the loads and bullets it likes
Very important, with the slower speed of the bullet, the recoil can throw accuracy off before the bullet exits the barrel. You have to hold it still like a blackpowder rifle. I've seen folks spray whitebox 240 all over a target but put 180 or 225 FTX in great groups because they are much faster
You'll likely have to find one load and stick with that
I can verify two things.
1.) The Marlin 1894 44 Magnum has a 1:38 twist rate. This twist rate is suitable to stabilize bullets up to around 300 grains, depending on the length of the bullet.
2.) The standard, or design, bullet weight for the 44 Magnum is 240 grains.
Whoever it is that is telling you all this stuff about lands and grooves is probably referring to microgroove vs. Ballard rifling but in either case, the twist rate for the 44 Magnum Marlin is 1:38. This is also the SAAMI specification for 44 Magnum rifles.
I shoot Winchester White Box 240 grain JSP ammo almost exclusively in mine and find I can get a 100 yard group at 1 1/4" but for the sake of argument I'll say under 2" consistently.
I am very confident that the 240 grain bullet weight and the twist rate are not the problem at all.
What exactly do you mean by doesn't shoot well? :questionmark:
1.) The Marlin 1894 44 Magnum has a 1:38 twist rate. This twist rate is suitable to stabilize bullets up to around 300 grains, depending on the length of the bullet.
2.) The standard, or design, bullet weight for the 44 Magnum is 240 grains.
Whoever it is that is telling you all this stuff about lands and grooves is probably referring to microgroove vs. Ballard rifling but in either case, the twist rate for the 44 Magnum Marlin is 1:38. This is also the SAAMI specification for 44 Magnum rifles.
I shoot Winchester White Box 240 grain JSP ammo almost exclusively in mine and find I can get a 100 yard group at 1 1/4" but for the sake of argument I'll say under 2" consistently.
I am very confident that the 240 grain bullet weight and the twist rate are not the problem at all.
What exactly do you mean by doesn't shoot well? :questionmark:
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