SR 4759 In 45-Colt

[H110]

Anybody using SR 4759 in 45 colt.

What velocities are you getting? I would imagine being a slower powder it would like the heavier boolits.

I believe it's pretty bulky. Might fill that old case up and get some descent velocity as well.

[subsonic]

Way too slow. Its a rifle powder. Keep it in rifle cartridges. Sounds like a recipe for hangfires.

[Porterhouse]

I don't think it's that slow. If you look at the chart, it is close to H110. I have never tried with 45 but heave tested with 41mag. Wasn't that bad but didn't group as tight as I hoped.
Give it a try and let us know!

[Guesser]

I have used it in 44 Magnum, found data in an old (1975) DuPont load guide. It worked but you had to stay at maximum pressure to get good performance. I'm not sure you will find satisfaction at 45 Colt pressures. Load some and try it, work your way up, probably won't get a good burn until you are above 30,000 and that is high for the 45.

[Potsy]

FWIW,
A long time ago I remember reading (maybe it was Paco Kelly) about using RL7 in a .45 Colt with big LBT's out of a levergun with trapdoor .45-70 performance and good accuracy.
Not saying it's even a good idea, just saying it might not be a bad one. Particularly in a rifle where you've got a little more expansion chamber.

4759 works quite well in 2 friends Savage Smokeless "Muzzleloaders". These are .50 cal and I doubt are working at much over 30,000 PSI (if that much), but once again, we're dealing with rifles.

[H110]

RL-7 in 45 colt? Hmm!

[44man]

4759 is a fairly fast powder but is bulky. It was made for reduced loads in rifle calibers so it will fill the case more.
I don't know if enough can be put in a .45 but you can't download it much. Treat it like a ball powder.

[Char-Gar]

4759, 4227 and 2400 all have similar, but no the same, burning rate. They do vary greatly in bulk. 4759 was designed to be bulky. It's original purpose was for reduced velocity in frangable ammunition for aerial gunnery practice in the 30-06 round.

4759 does well in the 45 Colt Round and can give sterling accuracy. Paco Kelly did some extensive work with this powder in the 45 Colt and 44 Mag, rounds some years back. We exchanged some emails on the subject and he was quite enthusiastic about the results.

Things sorta went South for Paco before he published the results. So you are flying blind. I have loaded 4759 in the 45 Colt round with excellent results. I have a policy of not posting load data on the Internet, particularly when it is out of the box stuff.

Hint: Folks need to get over the notion that a little unburned powder in the barrel is a bad thing. All that is important is how well the bullets play follow the leader to the target. Everything else is of very little concern.

[frank505]

19 grains of 4759, rem 2 1/2 , starline case and 310 Keith is @1000fps, shoots real nice groups. Most important fills the case with powder so no chance of a detonation.

[w30wcf]

I have used 4759 in the .45 Colt. A capacity load under a 265 gr Keith ran a bit over 1,200 f.p.s. with good accuracy from my Ruger Blackhawk.

Regarding RL7, I never tried it in a pistol, but in the 24" barrel of my .45 Colt Marlin Cowboy, a capacity load produced 1,465 with the 265 Keith and 1,415 fps with a 320 gr RCBS.

w30wcf

[Onty]

4759, 4227 and 2400 all have similar, but no the same, burning rate. They do vary greatly in bulk. 4759 was designed to be bulky. It's original purpose was for reduced velocity in frangable ammunition for aerial gunnery practice in the 30-06 round.

4759 does well in the 45 Colt Round and can give sterling accuracy. Paco Kelly did some extensive work with this powder in the 45 Colt and 44 Mag, rounds some years back. We exchanged some emails on the subject and he was quite enthusiastic about the results.

Things sorta went South for Paco before he published the results. So you are flying blind. I have loaded 4759 in the 45 Colt round with excellent results. I have a policy of not posting load data on the Internet, particularly when it is out of the box stuff.

Hint: Folks need to get over the notion that a little unburned powder in the barrel is a bad thing. All that is important is how well the bullets play follow the leader to the target. Everything else is of very little concern.

Does 4759 create birdseed in 45 Colt? I use to load (top) H4227 behind 45-325-SWC but the Bisley I was shooting had gap .002-.003 and in 50% birdseed will almost lock the gun. When original cylinder was installed with .006-.007 gap, this problem did not occur.

[Whit Spurzon]

I've only used it in my Marlin 1894 CB and at starting load levels I was getting max load velocities. Accuracy was good. Didn't try it in my Rugers.

[RobS]

I used it for a bit in my 454 Casull loads and it shot well however there isn't enough room in the case to reach the higher end loads but then again it wasn’t really meant for it either. I found it to be good powder for heavier bullets but uneconomical when I could create the same velocities and accuracy with a quicker powder so it went away side.

[frank505]

Onty, if you back it down it will "bird seed". Maybe this heavy bullet helps the powder consume, I have some loaded at 18 grains and 335 Keith. Maybe shoot em this weekend.

[H110]

Frank505, Get back to us and let us know how that load worked out.

Randy

[Buckshot]

http://www.fototime.com/68E891AD4F08210/standard.jpg

............Several years ago I got the wild idea to shoot the Lee 457-340F in my Old Model Vaquero. I could find NO reloading info for a slug that heavy. There was some for a 325gr boolit. I did some extrapolating and used SR4759 and H4227 under the slug. The boolit was lube-sized .457" and then run up through a Lee .452" push through die. IIRC the velocity I stopped at was 880 fps from the pistol. I didn't stop due to problems. Something else captured my attention and I never got back to it. It was nicely accurate too. I did try it in my Miroku Win M92 (16" twist) and it was one of THE most accurate loads shot in that rifle.

................Buckshot