38/44 Ammo Testing – Factory and Reload


The following is a test of 38/44 ammo only. This information is not applicable to any other cartridge or caliber and is presented only for information’s sake.

First off, let me state that what I did was push the limits in my guns. I knew I was taking a calculated risk and I went way beyond current book loads today. Just because I did not blow up my 38/44’s it does not mean that yours won’t go sky high on the first shot.

I take no responsibility for your reloading actions or how you treat this data. Neither this forum nor myself takes any responsibility for the information provided.

Now with the legal disclaimer out of the way…..

Today I wanted to finally chrono my handloads and some factory 38/44 ammo for comparison in 3 different heavy duties with different barrel lengths. I chose 3 post war 38/44’s in 4”, 5” and 6.5” barrel lengths. All are used guns and some have been use hard. This is why I chose them for this test. I knew that I was going to push the limit in some cases so I wanted guns that I would not be heartbroken if I blew them up. Yes, I was planning on catastrophic failure if necessary. That is how hot we are about to go.

First some pictures:



This is my chrono setup



This is the bench with my 3 different 38/44 heavy duty’s that will be the test.



I put all of my 38/44 ammo in red boxes to keep it out of D frame Colts and other non-38/44s.


If you remember your history, the 38/44 is a upgraded 38 special that should do about 1175 fps out of the 6.5”, 1150 fps out of a 5” and 1100 fps out of a 4”. So our design goal is 1100 to 1150 fps out of the 5” and see where the chips fall.

Let’s start with baseline data. All data will be 12 shot strings. Less then my normal 20 but reasonable for what I am doing.

2.8 grns of bullseye, starline brass, 1.145 case length, 148 grn rem hbwc, cci500 primer
6.5” 753+ 712- 41e 736m 12 s
5.0” 754+ 686- 68e 719m 20s
4.0” 753+ 693- 60e 716m 16s

If you are not familiar with the 35p, the + is the high velocity, the – is the low, e is extreme spread, m is mean s is standard deviation.

So you can see that the difference between my 4” and my 5” is only a few fps with this load and the 6.5” is just a bit faster. Extreme spread is about normal and the SD is par for the course on a 148 grn bullseye loads. These were reasonably accurate and sort of popped when you fired them. No real drama here.

Next load was 4.4 grns of Universal clays with a 158 grn Lasercast. From here on out, everything will be cci500’s unless mentioned, starline brass and a 158 lasercast created to 1.456 col.

6.5” 912+ 771- 141e 843m 42s
5.0” 888+ 737- 151e 812m 43s
4.0” 869+ 740- 129e 796m 42s

Well, as a nice 38 special level load, you can see that 4.4 grns of Universal clays has a lot of spread on the extreme spread and a high SD. Velocities came up over the bullseye load but look at the variation in extreme spread. Over twice the bullseye load. Not a good load in my opinion. I have never found UC to be that accurate so I was just burning this stuff off. Lets take it up a 10th and see how we do at 4.5 grns.

Next load was 4.5 gns of Universal clays with a 158 grn Lasercast. From here on out, everything will be cci500’s unless mentioned, starline brass and a 158 lasercast created to 1.456 col

6.5” 937+ 841- 96e 884m 29s
5.0” 902+ 826- 76e 853m 22s
4.0” 865+ 734- 131e 809m 38s

Well, that 10th helped the sd’s and a bit on the extreme spread but not on the 4”. Oh well. The trend line (from 2 points?) is that I should continue to load up UC. Maybe, but I still don’t like it for accuracy.

What about its kissing cousin Unique? How about we start with 4.5 grns of Unique and our same 158 lasercast and cci500 primer?

6.5” 953+ 881- 72e 910m 24s
5.0” 916+ 859- 57e 890m 18e
4.0” 905+ 800- 105e 853m 30s

We picked up some velocity, dropped the sd and es and found some accuracy by switch to unique. 4.5 grns is pretty mild though, so lets take it up so more. My old standard load for decades (yes really decades) was 5.0 grns of Unique. It is what I started with loading back in 1976 and did not even see a reason to buy a new loading manual till the mid 90’s since I made just one load all that time. I have shot around 40,000 of these loads through my old diamondback 4”. I wonder how they will do today? This is the max load in the current lasercast manual for unique.

6.5” 1049+ 975- 74e 1013m 25s
5.0” 1023+ 955- 68e 984m 19s
4.0” 1016+ 922- 94e 969m 25s

That added some more velocity, and tightened up the over all accuracy. 5 grns is very accurate for me. The extreme was up just a touch but the sd is doing ok. I note that the 4” is starting to behave more.

Let’s go up another half a grain to 5.5 grns. This is getting into the +P load level of most manuals although a lot would say that my 5.0 grn load is +p.

6.5” 1106+ 1050- 56e 1079m 16s
5.0” 1071+ 1022- 49e 1044m 16s
4.0” 1052+ 1000- 52e 1027m 17s

That looks like unique is starting to settle down into some very consistent numbers. Unique always seems to work better with more powder so I am a lot more comfortable with my 5 grns that I shot for decades. The max load on Speer 8 is 6 grns and the older Speer manuals takes it to 6.5 grns so I will have to work up a bit more with Unique. Accurate, clean and easy to shoot is what I characterize unique as with these velocities. Looks like more work is in order!

So let’s switch to try some other powders. These were just to get a feel for the powder since I have not worked with it in 38/44 before. Let’s try longshot. Say 5.7 grns.

6.5” 986+ 892- 94e 948m 29s
5.0” 969+ 920- 49e 940m 15s
4.0” 933+ 863- 70e 901m 24s

I was not expecting much from longshot but it was obviously accurate. 5.7 grns was quite mild but the sd’s and es’s are looking reasonable for such a light load. I will have to work up longshot more in 38/44

Let’s try another powder that should do well in 38/44. Power pistol. Since this is a shot in the dark let’s try 6.0 grns.

6.5” 1122+ 1078- 44e 1095m 11s
5.0” 1081+ 1026- 55e 1057m 15s
4.0” 1065+ 1007- 58e 1029m 17s

Power pistol shot well and was almost to 38/44 power levels but I noted that when it fired it give a sharp rap. Not a push but a noticeable rap. Looking at the velocities, it looks like most of the velocity comes real quick so I am probably going to draw the line with PP at 6.0 grns. I bet if I go to 6.5 grns or 5.5 grns it will react quickly. I think the powder is just a hair too fast for this approach.

Now we need to try the holy grail of 38/44’s. SR4756. This is the infamous powder from Speer 8 that caused a lot of grief. SR4756 is somewhat variable and has a reputation as being quite non-uniform. So when I work up hot loads, I will chrono each new batch and just load to a velocity. So we can start low and work up.

6.0 grns seems like a reasonable start.

6.5” 1045+ 937- 108e 997m 28s
5.0” 1012+ 919- 93e 958m 28so
4.0” 955+ 883- 72e 920m 21s

Pretty mild load and it was not burning as well as I would have liked in the 4” and 6.5. We need more powder.

6.5 grns is the next test.

6.5” 1107+ 1003- 104e 1066m 31s
5.0” 1084+ 1025- 59e 1057m 17s
4.0” 1081+ 1006- 74e 1030m 21s

Still below what I wanted and the SD’s are more radical. ES’s are still high so we need to keep going up.

7.0 grns of sr4756 is next

6.5” 1209+ 1178- 31e 1192m 10s
5.0” 1162+ 1099- 63e 1136m 17s
4.0” 1134+ 1086- 48e 1120m 16s

Well I had to stop and think for a bit here. I hit my desired power level at 1136 in the 5” but extraction was easy and accuracy was good. SD’s and ES’s were getting tighter and it felt good to shoot. I guess I will go up another half a grain and see how we do. By the way, these loads are getting into the mild 357 magnum loads or commercial ammo.


7.5 grns of sr4756 is next (and this is getting hot for even 38/44’s).

6.5” 1262+ 1227- 35e 1243m 11s
5.0” 1224+ 1188- 36e 1199m 11s
4.0” 1195+ 1157- 38e 1172m 12s

Well that was hotter than I expected. We are definitely up in low 357 Magnum power levels now. Extraction was still easy and not a hint of stickiness. I had to think a bit but I decided what the heck, let’s blow up a gun and go for it. On to the starting load for speer 8 or as it is more commonly known on the web “The Load”.

8.0 grns of sr4756 with a 158 lasercast and cci 500 primers.

6.5” 1312+ 1257- 55e 1285m 16s
5.0” 1265+ 1219- 46e 1246m 14s
4.0” 1247+ 1198- 49e 1217m 12s

Well that was a heck of a starting load! This is well into the 357 magnum power ranges today and pretty darn hot for a 38/44 back in the day. There is no way I would fire one of these in a D frame colt! There was no stickiness in extraction, the accuracy was great, and the sd’s and es’s look solid. This is probably a bit hotter than I would shoot on a daily basis, but the sweet spot appears to be around 7.5 grns to maybe 7.0 grns. I will have to work up by 10ths next.

So let’s switch gears and explore 2400. Our first load will be 7.5 grns of 2400 with a cci-500 primer

6.5” 850+ 754- 96e 815m 24s
5.0” 814+ 723- 91e 782m 26s
4.0” 801+ 661- 140e 762m 40s

Big change for sr4756! We definitely need to go up from here. This is mild 38 special levels!

First let’s try a cci550 magnum primer on the same load and see if it matters. So 7.5 grns 2400 with a cci550 and a 158 lasercast

6.5” 888+ 785- 103e 834m 33s
5.0” 867+ 778- 89e 827m 22s
4.0” 813+ 680- 133e 753m 39s

A magnum primer really did not help us much and one could argue that it actually hurt. Oh well, we have to try to learn. On to 8.5 grns. (I skipped 8.0 since it was going to be mild still).

6.5” 993+ 846- 147e 909m 41s
5.0” 936+ 854- 82e 899m 28s
4.0” 913+ 806- 107e 875m 37s

Still too weak. Next 9.5 grns of 2400.

6.5” 1098+ 1007- 91e 1059m 27s
5.0” 1075+ 955- 120e 1019m 32s
4.0” 1041+ 914- 127e 978m 33s

We are improving slowly, but we still need to go up. The extreme spreads tell me we are not settling out yet and are a bit wild. The odd thing is that this load is starting to get accurate. 10.5 grns next.

6.5” 1186+ 1059- 127e 1129m 35s
5.0” 1127+ 1009- 118e 1069m 37s
4.0” 1056+ 966- 90e 1028m 29s

Ok, 2400 is showing promise, but I need more out of it. I will have to work up another couple of grains but it is showing promise and is quite accurate even with the high es’s and sd’s.

We now need to switch to some commercial ammo. First off we are going to try some early 1960’s 200 grn Remington 38 special ammo.

6.5” 799+ 736- 63e 758m 17s
5.0” 756+ 712- 44e 738m 14s
4.0” 740+ 659- 81e 718m 23s

About what I was getting on my better loads in terms of es and sd so it seems reasonable. Interesting that we had exactly 20 fps change per inch of barrel with this stuff.

Next we did some Peters commercial 1940’s 38 special ammo. I don’t have an exact date but I believe this came from early 1940’s from the box and what I have read online.


This is the 38 special ammo I shot.

6.5” 885+ 803- 82e 838m 26s
5.0” 863+ 670- 193e 803m 48s (one really slow round!)
4.0” 826+ 757- 69e 787m 20s



This goes to show that older ammo was a lot faster than modern stuff. If you toss the one slow round the mean comes up to 818. In the same gun (5) modern CCI 158’s do 775 fps. CBC 158’s do 727 fps and Winchester does 753. Even Winchesters +P FBI load only goes 887 FPS. That is just bit better than 1940’s standard 38 special ammo.

Now lets try out the final stuff. This is real 1940’s vintage 38/44 ammo. It says “.38-44 S.&W. Special” 158 grn Lead bullet. The box says “r266” as the version of the load an it specifically says “specially adapted for the .38-44 Smith and Wesson Special”.


This is the 38/44 ammo that was chrono-ed.

6.5” 1198+ 1057- 141e 1121m 82s
5.0” 1131+ 1002- 129e 1079m 71s
4.0” 1069+ 739- 330e 1010m 103s (one bad round)

I had a bunch of misfires so I was barely able to get my 12 rounds for testing of each. That is why I was stuck with the one bad round on the 4”. I just ran out of decent ammo otherwise I would have voided the round and shot another one. So do I believe that original 38/44 ammo would have done about 1175 fps out of a 6.5” and 1150 fps out of a 5”? Yes. The degradation of the ammo in the last 70 years could explain my results running a bit slow compared to expectations. We are certainly not far outside the range of belief on the commercial of that vintage. Given the number of duds I had in the box, it would be quite believable that 1175 and 1150 are the targets.

I would have to say that I have a couple of blisters from shooting so much ammo. I am out of practice and tend to shoot in spurts like this. The Oehler 35p worked great and I really enjoyed the day. There is a lot more conclusions one could draw from this data set so I will just leave it for your enjoyment and your education.

In the end, the design goal of 1175 to 1100 fps for the 38/44 could be reached with 7.0 grns of SR4756 or probably 6.0 grns of Unique or 11.5 grns of 2400. I would have to test that to be sure. Longshot deserves more development but power pistol is hitting its limits before I get too far into the 38/44 territory. It would probably make some great 38 special+P ammo. Universal clays is not worthy of further work and older 38 special ammo is running about 50 to 100 fps faster than ammo from modern times. +P ammo from Winchester is slower then load manual max modern reloads.

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SWCA 1646

Peter,

I appreciate your in depth testing, the time you spent plus the expense involved were considerable. Those rounds have much more power than anything one can buy off the shelf these days. In fact they run close to .357 levels but you didn't need me to tell you that....

Fascinating stuff Peter. I got a 38/44 recently and been contemplating loading up something run through it.

You post is timely and informative. I'm gonna print it off and go play.

report. I really appreciate your systematic approach and results. I wish I could try to duplicate your work but most of my Heavy Dutys are now .45 Colt. Oh well....don't tell Aspenhill!

My experience with Unique is very similar to yours. It seems to normally have wide ES but accuracy doesn't suffer. I have weighed charges dropped by a Dillon powder dispenser and the drops are very inconsistent. For whatever reason Unique doesn't meter consistently.

On the other hand I have always had good results with Universal Clays and prefer it to Unique for cleanliness.

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Bob.
SWCA 1821

Peter, Good info friend.

For me, The Load is my 38/44 load. I get the desired 1100fps out of a 3" barrel.

Listen, a 158gr LSWC @ 1100fps is going to be a day ruiner for someone!

I sure would like to see you work up a good load with Longshot.

I would but right now, I am concentrating on 44Mag +P loads as well as some More Than Ruger Only 45Colt loads.

Good info, keep it coming!

Excellent post and test. Very good info here. I'm pasting it and keeping it for future reference.

In my two HDs (4 and 5 inch bbls) I used 800x to get about 1100 fps with the Hornady and Speer 158 grain Jacketed hollowpoints. I still have more testing I want to do.

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Have guns...will shoot'em.

Hey that's the Geo. Bush Park range out beyond Hwy 6 in Houston. I used to shoot out there from time to time.

Good report Peter!

Here's some data I got in 2007 using The Load and 5.5 gr of Unique in 4 different guns.



BTW, That 1956 SR 4756 wasn't that old, but it was DuPont vs IMR.

I truly love the .38-44. I have gotten more accuracy out of my well worn Outdoorsman than I ever did with any of my .357's. I have a very well worn copy of Handloader where Brian Pearce did a thorough article but did not do the level of research like yours. He listed the max loading for a 170 grain #358429 bullet with 13.0 grains of 2400 I recall. I find that 12.5 grains is just fine accuracy and recoil wise. Somewhere I have the specs of exactly how fast it is going. I still want to park one of those 170 grainers into the side of a whitetail.

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Vaya con Dios

I've shot 13.5 gr of 2400 with a 358429 in .38 brass and got an average of 1232 fps (1272 MV) out of a 6" M28-2. I also used 13.5 gr with a 158 gr Dry Creek for an average of 1263 fps (1303 MV) out of a 4" M66-2. The M28 seems to be a little slow to me.

Yep. Like all good science experiments, this one convinced me I need to do more testing.

Blue Dot, 2400, 800x, Longshot and a few others need more fully tested. Power pistol, Universal Clays and a few others do not. We are maxed out for them.

Thanks for the advice and comments!

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SWCA 1646

What a great job. The best post I've seen on this subject. Thank you.

Good post Peter.

I've played with the 38/44 myself over the years and have tryed Skeeter Skelton's old loading of a #358156 hard cast HP SWC (gas checked) over 13.5 grs of 2400 in a new or once fired 38 spl. case.
That one's pretty hot, and shows flattened primers and hard extraction in my guns.
Since 2400 powder has changed a bit over the years I don't really recommend it unless your shooting it in a 357 Magnum revolver.

I have kept with the 358156 bullet though. It's a nice bullet for hunting and long distance shooting.
For my 38/44 factory duplication load I finally settled on 12.grs of 2400 with the 358156 for about 1,100 fps plus out of most of my 38/44 HDs and Outdoorsmans.
I sized the bullets 357 dia and have good luck with accuracy out to 100 yards with both gas checked and non gas checked. You need a good, tight roll crimp though.

The 38/44 revolvers really don't "sing"until you get over 1,000 fps.

Agreed. I definately noticed improved accuracy and my ability to shoot them well once we got up into 1000 fps range. The real question now is what is the best way to get to where I want to go?

SR4756, 2400, Unique, Blue Dot, or maybe even longshot? More than one way to skin a cat so to speak.

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SWCA 1646

You are going to LOVE SR4756 in this type of loads!

In my experience, SR 4756 seems to be the ideal burning rate to make the .38 Special and .357 do what they're supposed to do. Plus, it does it pretty economically, with lower charge weights than the slower powders use.

Excellent data. Should be a sticky!

very interesting and informative post. Thanks for sharing the info.

I used to run THE LOAD through my Colt Official Police with no problems, and still have some 4756. May have to load a few more.

Pete, I also really appreciate your efforts. The empirical data, and careful listing is a worthwhile labor. The 38-44 is a good idea from the '30s and I salute you and the others who have bothered to chrono collector ammo, and carefully assembled hand loads, and chart them to share with others...........THANX

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dd884
JMHO-YMMV

I just uploaded some Sharpe data that may have some usable information on .38-44 loads. 6.6 gr of Unique is surprising at what we would call +P pressures with a 158 gr Lead bullet.
http://www.bbhfarm.com/albums/album06/acc.jpg

I tryed Unique and SR 4756 and found that the faster burning powders brought the pressures up a little to much before I could reach the 1,100 fps mark.
The only powders I tryed were Unique, 4756, 2400 and 296. I know there are a lot of newer powders out these days that I have not tryed.

Not to mention the fact that the 146gr loads with 2400 are in the +P+ range! 35,000CUP or whatever is a serious 38spl load!

Since I found out I already had those Sharpe pages uploaded, I deleted what I did today and direct you here instead: BBHFarm Gallery :: Complete Guide to Handloading Philip B. Sharpe 1937

I guess I need to see what 6.6 gr of Unique looks like in my M66-2.