38-55 & imr4895

[Cast10]

Lee 379-250-RF powder coated and IMR4895 in a new Winchester 1894 Sporter; 24” bbl ; 1:15 twist.

As you guys can tell, I’ve been worried about velocities, as all the data I’ve seen have been all over the place.

Loaded increments from the Lyman 4th Edition; 32.0, 32.5, 33.0, 33.5, and 34.0. I only made it to 32.5.

32.0 averaged 1694.8 fps and 32.5 averaged 1720.3 fps. I was shooting for 1400-1600. These were much higher than I imagined. Lyman #4 says min 31.0 is 1408 and max 35.0 is 1752, all from a 30” bbl.

I’ve never had to work DOWN! LOL. Didn’t shoot for accuracy. Trying to keep from hitting the chrony! I will say the sd was not good as lots of unburned powder left in barrel contributed to lots of variations in velocity. This was the only powder I had on hand to try.

I wonder if the faster twist with the 24” bbl had anything to do with the high velocities, and/or the polymer in the powder coat. Hmmmmm.

Not back to square 1, but definitely moving forward.

[ascast]

imr-4198 is a good powder in 38-55

[Cast10]

imr-4198 is a good powder in 38-55

I can’t find any……I’ll keep looking.

[Just plain Bill]

I contacted Western Powder a few years back and they sent me this.


Caliber: .38-55 Winchester.

Barrel: 30”

Powder: Accurate – 5744®.

COL: for bullets 200 to 270 = +/-2.51 to2.55”

Bullet >270 gr must be extended beyond factory spec 2.600” or longer.

Bullet weight: 150 grains.

Low load: 20.0 grains (1550 – 1650 Fps)

Mid range load: 25.0 grains (1900 – 2000 Fps

Maximum load: 30.0 grains (2300 – 2400 Fps).

Bullet weight: 200 - 210grains.

Start load: 21.0 grains (1650 – 1750 Fps)

Maximum load: 27.0 grains (1900 – 2000 Fps).

Bullet weight: 220-225grains.

Start load: 22.9 grains (1700 – 1800 Fps)

Maximum load: 25.5 grains (1850 – 1950 Fps).

Bullet weight: 240 – 245grains.

Start load: 19.0 grains (1650 – 1750 Fps)

Maximum load: 24.0 grains (1800 – 1900 Fps).

Bullet weight: 250-255grains.

Start load: 18.8 grains (1550 – 1650 Fps)

Maximum load: 23.5 grains (1700 – 1800 Fps).

Bullet weight: 265-270grains.

Start load: 17.0grains (1300 – 1400 Fps)

Maximum load: 21.0 grains (1600 – 1700 Fps).

Bullet weight: 300 grains. (COL: 2.676”)

Start load: 16.0 grains (1150 - 1250 Fps)

Maximum load: 20.0 grains (1450 – 1550 Fps).

Bullet weight: 335 - 345 grains. (COL: 2.676”)

Start load: 13.0 grains (950 - 1050 Fps)

Maximum load: 17.0 grains (1250 – 1350 Fps).



COL: <2.510”

Powder: Accurate -- 1680®.

Note: It’s important to use a filler material in conjunction with 1680 in this caliber.

Suggested materials: Dacron® or Pufflon®

Bullet weight: 250 grains.

Start load: 24.0 grains (1470 – 1570 ft/p/sec)

Maximum load: 27.0 grains (1675 – 1775 Ft/p/sec).

Bullet weight: 280 grains.

Start load: 22.0 grains (1300 – 1400 ft/p/sec)

Maximum load: 25.0 grains (1500 – 1600 Ft/p/sec).

Bullet weight: 290-310 grains.

Start load: 20.0 grains (1175 – 1275 ft/p/sec)

Maximum load: 23.0 grains (1400 – 1500 Ft/p/sec).





Powder: Accurate –2200.

Bullet weight: 265 grains.

Start load: 24.0 grains (1475 – 1575 Ft/p/sec)

Maximum load: 27.0 grains (1650 – 1750 Ft/p/sec).

Bullet weight: 315 grains.

Start load: 21.5 grains (1375 – 1475 Ft/p/sec)

Maximum load: 24.0 grains (1500 – 1600 Ft/p/sec).





Powder: Accurate -- 2015®.

COL: for bullets 200 to 270 = +/-2.51 to2.55”

COL: Bullet >270gr must be extended beyond factory spec 2.600” or longer.

Bullet weight: 150 grains.

Start load: 33.0grains (1950 – 2050 Fps)

Maximum load: 38.0 grains (2200 – 2300 Fps) Full case.

Bullet weight: 200 - 210grains.

Start load: 31.0grains (1750 – 1850 Fps)

Maximum load: 36.0 grains (1900 – 2000 Fps) Full case.

Bullet weight: 220-225grains.

Start load: 30.6 grains (1700 – 1800 Fps)

Maximum load: 34.0 grains (1850 – 1950 Fps) Full case

Bullet weight: 240 - 245grains.

Start load: 28.0grains (1650 – 1750 Fps)

Maximum load: 32.0 grains (1900 – 2000 Fps) Full case.

Bullet weight: 250- 255grains.

Start load: 27.9 grains (1550 – 1650 Fps)

Maximum load: 31.0 grains (1800 – 1875 Fps) Full case.

Bullet weight: 265-270grains.

Start load: 23.0grains (1300 – 1400 Fps)

Maximum load: 29.0 grains (1700 – 1800 Fps) Full case.

Bullet weight: 300 grains. (COL: 2.676”)

Start load: 22.0 grains (1250 - 1350 Fps)

Maximum load: 27.0 grains (1550 – 1650 Fps) Full case.

Bullet weight: 335 - 345 grains. (COL: 2.676”)

Start load: 19.0 grains (1050 - 1150 Fps)

Maximum load: 23.0 grains (1300 – 1400 Fps) Full case.



Powder: Accurate – 2230®

Bullet weight: 220-225 grains.

Start load: 34.0 grains (1750 – 1850 Fps)

Maximum load: 38.0 grains (2050 – 2150 Fps).

Bullet weight: 250-255 grains.

Start load: 28.0 grains (1600 – 1700 Fps)

Maximum load: 32.0 grains (1750 – 1850 Fps).

Bullet weight: 330 grains. (COL: 2.676”)

Start load: 23.0 grains (1300 – 1400 Fps)

Maximum load: 26.0 grains (1500 – 1600 Fps).



Powder: Accurate -- 2460®.

Bullet weight: 240 - 250grains.

Start load: 31.0grains (1650 – 1750 Fps)

Maximum load: 34.0 grains (1900 – 2000 Fps) Full case.



Powder: Ramshot – X-TERMINATOR®.

Bullet weight: 200-210 grains.

Start load: 36.0 grains (1925 – 2025 Fps)

Maximum load: 40.0 grains (2175 – 2275 Fps).

Bullet weight: 220-225 grains.

Start load: 34.0 grains (1750 – 1850 Fps)

Maximum load: 38.0 grains (2050 – 2150 Fps).

Bullet weight: 240 grains.

Start load: 31.5 grains (1700 – 1800 Fps)

Maximum load: 35.0 grains (1850 – 1950 Fps).

Bullet weight: 250-255 grains.

Start load: 28.0 grains (1600 – 1700 Fps)

Maximum load: 32.0 grains (1750 – 1850 Fps).

Bullet weight: 300 grains.

Start load: 25.2 grains (1400 – 1500 Fps)

Maximum load: 28.0 grains (1600 – 1700 Fps).

Bullet weight: 330 grains.

Start load: 23.0 grains (1300 – 1400 Fps)

Maximum load: 26.0 grains (1500 – 1600 Fps).

Powder: Ramshot – TAC®.

Bullet weight: 200-210 grains.

Start load: 38.0 grains (1925 – 2025 Fps)

Maximum load: 42.3 grains (2175– 2275 Fps).

Bullet weight: 220-225 grains.

Start load: 36.0 grains (1750 – 1850 Fps)

Maximum load: 40.0 grains (2050 – 2150 Fps).

Bullet weight: 240 grains.

Start load: 33.0 grains (1700 – 1800 Fps)

Maximum load: 37.0 grains (1850 – 1950 Fps).

Bullet weight: 250-255 grains.

Start load: 30.0 grains (1600 – 1700 Fps)

Maximum load: 34.0 grains (1750 – 1850 Fps).

Bullet weight: 300 grains.

Start load: 27.9 grains (1425 – 1525 Fps)

Maximum load: 31.0 grains (1625 – 1725 Fps).

Bullet weight: 330 grains.

Start load: 25.0 grains (1300 – 1400 Fps)

Maximum load: 28.0 grains (1500 – 1600 Fps).





NOTES:

It’ important to note that SAFETY is our prime concern therefore we strongly recommend.

1. ALWAYS BEGIN LOADING AT THE RECOMMENDED MINIMUM “START” LOAD and develop loads in 2% increments towards the MAXIMUM load.

2. CAUTION: Beware of double charging if the loading density is below 50% of the available volume.

3. If possible, measure the velocity and correlate with our data.







Don W.

CSR

Western Powders Inc.

406-234-0422







Western Powders Inc. disclaims all possible liability for damages including, actual, incidental and consequential, resulting from usage of the information or advice contained in this message.

Use the data and advice at your own risk, and with extreme caution.

IMPORTANT NOTE: Always begin loading from the minimum "START charge and carefully develop loads by increasing in small increments of 2% towards the Maximum load.

[DAVIDMAGNUM]

311596

From the Lyman #48 Manual. This may help.

[Cast10]

@davidmagnum
Thanks! Part of my confusion right there. The Lyman #4 book is much different than most all those loads. RX7 is the only one still the same. Thanks for sharing.

[Cast10]

@just plain bill
Wow, ‘loads’ of info there! Thanks!

I have 2200, but don’t see any loadings for 250gr bullets.
I also have 2460.

Both of these powders, especially 2200, is right in line with some of the notable powders for 38-55. Faster burning than 4895, they should burn completely/cleanly too.

[Just plain Bill]

You are welcome. I bought one of the Cimarron 1894 rifles in 38-55 when they first came out. I slugged the bore and it was real close to .380 I bought a box of bullets from Vollmer Precision to fit the bore and used the TAC powder with decent results.

[flatnose]

4759 is THE powder but sadly discontinued for the 2nd time. 5744 is number 2. Shooters world buffalo is next.

[Cast10]

4759 is THE powder but sadly discontinued for the 2nd time. 5744 is number 2. Shooters world buffalo is next.

I just picked up a pound of IMR4198….

[ascast]

I shot 21 grns 4198 with a 310 grn Hoch. Outstanding accurate load. CSharps 1875 busness rifle.

[Eddie Southgate]

4759 is THE powder but sadly discontinued for the 2nd time. 5744 is number 2. Shooters world buffalo is next.

From all I have read 5744 and Buffalo are the same powder in different bottles . I have not had any of the shooters world powder to verify that But did read it on the website of the company that actually produces both, it is also sold under another name in Europe but I can't remember what it is.

[flatnose]

From all I have read 5744 and Buffalo are the same powder in different bottles . I have not had any of the shooters world powder to verify that But did read it on the website of the company that actually produces both, it is also sold under another name in Europe but I can't remember what it is.

The 5744 I have was made in Canada and the shooters world buffalo was made in Czechoslovakia. They both sure shoot the same. I begged for more 4759 and the Hodgon rep told me that Trail Boss took its place. ( HAHAHAHAHA yea right!)

[Cast10]

Any data for reduced loads with 250gr IMR4198 around 1400-1600 fps?

[jgstrug]

Any data for reduced loads with 250gr IMR4198 around 1400-1600 fps?20grs with plain base cast.

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[Cast10]

20grs with plain base cast.

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THANKS. Any idea on fps?

[jgstrug]

1400fps

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[Cast10]

1400fps

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Thank you sir.

[pbcaster45]

My rifle is a 30-inch barrel single shot (Cimarron Arms 1885 High Wall) with a 1 in 18 twist rate, but this might help.

Bullet: Lyman 375449 265 gr. FNGC
Powder: 20.0 gr. IMR 4198
Primer: CCI-200
Case: Winchester
Average Velocity: 1464.93 fps

Another one using the longer Starline brass.

Bullet: Buffalo Arms 275 gr. FN (.379/SPG/1-20 alloy)
Powder: 20.0 grs. IMR 4198
Primer: CCI-200
Case: Starline 2.125
LOAL: 2.562
Average Velocity: 1538.01 fps
ES: 37.54
SD: 14.10