357 Mag 150 grn KT over 11.5 grns 4227

[Greyman50]

Loaded several different rounds to go to range. Have not used 4227 in many years, noticed the Lyman manual says 4227 is most accurate so loaded 50 rounds.
Shot Mdl. 19 off lid of my range box at 20 yards, had to check 1911 Govt. mdl ( pre series 70) zero too.

 

[Paul in Nevada]

Glad to hear it. I don't have any experience with 4227 but I recently picked some up to try. There seem to be a lot of fans of this powder.

 

[Nevada Ed]

In my 686 6" I get very accurate loads with IMR4227 powder.

You might try a 110 JHP with 18.5 grs at 1290 fps or
a lead 158 wc target load with 12 grs that only does 976 fps.

Both are soft in recoil and the wife, loves these loads.

 

[Greyman50]

Thanks Ed, usually stick to cast bullets unless for self defense loads which usually go in 65s, not that the 19 wouldn't work.

 

[STORMINORMAN]

In my 686 6" I get very accurate loads with IMR4227 powder.

You might try a 110 JHP with 18.5 grs at 1290 fps or
a lead 158 wc target load with 12 grs that only does 976 fps.

Both are soft in recoil and the wife, loves these loads.

Ed: could that be a typo? Possibly either a 148gr WC or a 158gr SWC?

Cheers!

 

[alwslate]

Loaded several different rounds to go to range. Have not used 4227 in many years, noticed the Lyman manual says 4227 is most accurate so loaded 50 rounds.
Shot Mdl. 19 off lid of my range box at 20 yards, had to check 1911 Govt. mdl ( pre series 70) zero too.View attachment 583481

a pretty light load with 4227 which is not very clean burning under any circumstances. Expect lots of unburned powder granules.

 

[Ivan the Butcher]

In the 1980's I loaded 300 357 Mag with 180 grain JSP Hornady bullet and 4227 for my Marlin 1894C. It was extremely accurate! I started using that load in my 28-2 4" also. I Can't find my data and Hornady quit making that bullet. It was the most accurate full power 357 I have ever found!

Ivan

 

[alwslate]

11.5 grs with a 150 gr cast SWC is slightly below Lyman's starting load and will probably yield around 1,000 FPS out of a 4" revolver. You can get the same or slightly better velocity with less than half the powder. 5.2-3 grs of Bullseye or Titegroup or about 5.5 grs of 231. ES should be far lower with surely better accuracy.

 

[Huskerguy]

The RCBS KT 150? A SWC bullet.

If that is the bullet, it is my go-to for all things 36/357, found nothing better for ME. If not what you were talking about, disregard but the comment is still true.

 

[Greyman50]

The RCBS KT 150? A SWC bullet.

If that is the bullet, it is my go-to for all things 36/357, found nothing better for ME. If not what you were talking about, disregard but the comment is still true.

Yep, had mold since 70's. IMHO best all around for 357 and 38 Spl.
Going to try about 13 grns. of 4227 , head back to range on Thursday.

 

[Nevada Ed]

Ed: could that be a typo? Possibly either a 148gr WC or a 158gr SWC?

Cheers!

I did not state a 158 lead round nose.............
but a wc.

You know, the type that have a flat end on the bullet.

After all my post, on shooting lead in my 686, 99% are with the lead 158 gr, since the little 148 gr sucks at accuracy in my .357 weapons.......

and yes, maybe I should have stated a 158 lead Swc type bullet
however, I have never actually seen a 158 "Full WC" design from the major ammo companies, that I order bullets from.

I'd post a picture but I am plumb wore out, with all this typing.

 

[ironhead7544]

IMR4227 with a 125 gr JHP is the most accurate load for 357 Magnum that I ever tried. Drop down a grain from max.

 

[Protocall_Design]

I'm using 18 gr. of 4227 in 44 Mag. with a 300 gr. XTP bullet for Met. Sil. Hogdon or IMR doesn't matter for accuracy (used many pounds of both), but if you use the Hogdon, it's an Extreme powder, which means temperature insensitive. Hot or cold temps change the pressure and velocity very little.

In my 8 3/8" M629 these are running about 1050 FPS, just subsonic. I'm getting 4 to 6" groups at 200 meters, and recoil is like a 44 Special. I've shot 120 of them in one day lots of times (3 runs of 40) with no adverse effects from recoil. I have been using this load for around 30 years. It always has stellar performance. I think 4227 is a really good magnum pistol powder.

 

[rockquarry]

Just this morning I chronographed a load using the H&G #51 SWC (158 grs.) and 14 grains IMR-4227. Primer was a CCI-400 small rifle primer. Taper crimp and little to no unburned powder. Average muzzle velocity using a 4" Highway Patrolman was 1095 fps. Add about 60-80 fps for a 6" gun.

 

[6GUNSONLY]

I like 4227 and bought quite a bit a few years back at a really good price, even for the time. Wish I'd bought more. Upper end loads leave a lot powder residue, and I have tried both standard and magnum primers with no real noticeable difference. I use magnums since I got a great deal on about 10k of those same time/place I bought the 4227. Just as good in 44 magnum, too.

 

[4barrel]

IMR4227 with a 125 gr JHP is the most accurate load for 357 Magnum that I ever tried. Drop down a grain from max.

Here is a bench load of 4227 from my open sight 19-3 that loves 125's jacket @ 50 yards. If you load it down you need to use mag primers. Don't worry about the unburnt stuff in the barrel. It's just there with 4227. I do like 296-H110 or 2400 better.

 

[Greyman50]

I also lucked out on SP primers, regular and Mag, using mag. with 4227 and 2400, my 19 6" loves them all.

 

[Greyman50]

Heres finished product and a projectile. Shoot tomorrow if neck gets better….

 

[Greyman50]

This is target from 20 yards resting on range box. Loaded 50 more with 13 grns to try today. Going for accuracy at lowest grn. load.
Will post target from today later with 13 grns, will see and will try it in my 6" Trooper too.

 

[4barrel]

4227 is not a good powder to load down a lot.-Especially without a mag primer. 2400 loads down great.