Midwest Powders from American Reloading

DRAFT

Midwest Powders and referenced “Similar to” powders

In the past American Reloading sold Midwest Powders with instructions to use [some particular canister powder] load data. They stopped using that language¹ and now say the MP is similar to another powder.² The website listing for each powder shows load data for only one commonly-used projectile appropriate for the powder. 9mm 147gr FMJ or .223 55gr FMJ, for example.

the list

MP 000 ##################

MP 035 Similar to Red Dot**

MP 040 Similar to Silhouette**

MP 065 Similar to 700x*

MP 067 Similar to Alliant Sport*

MP 074 Similar to Titegroup*

MP 075 Similar to Titegroup*,** trapshooters

MP 077 Similar to Titegroup

MP 080 Similar to Silhouette* /r/reloading, /r/AmericanReloading, /r/reloading

MP 085-1 Similar to 700X

MP 090 Similar to Silhouette*

MP 092-1 Similar to 700X

MP 100 ##################

MP 100-1 Similar to American Select

MP 100-2 Similar to American Select

MP 100-3 Similar to American Select

MP 130 Similar to IMR PB*

MP 132-2 Similar to IMR Target /r/AmericanReloading

MP 132-3 Similar to IMR Target castboolits

MP 132-7 Similar to IMR Target

MP 132-8 Similar to IMR Target

MP 132 Similar to IMR Target

MP 137 Similar to Win 244*

MP 138 Similar to Win 244*

MP 139 Similar to Win 231*

MP 140 Similar to Win 231*

MP 141 Similar to Win 231*

MP 150 Similar to Win 244*

MP 151 Similar to Win 244*

MP 152-3 Similar to Win 244

MP 153-1 Similar to Win 244

MP 154-9 Similar to Win 244**

MP 155-1 Similar to Unique castboolits

MP 156 Similar to Unique* ravenrocks forum, castboolits

MP 158-1 Similar to Universal

MP 160 Similar to Universal**

MP 163 Similar to CBI*

MP 165 Similar to BE-86*

MP 170-4 Similar to Herco

MP 172 CSB-1

MP 175 Similar to BE-88*

MP 187-3 Similar to WSF

MP 187-5 Similar to WSF

MP 187-6 Similar to WSF

MP 187 Similar to Herco*

MP 190-1 NO ‘Similar to’, Use Data

MP 190 Similar to WSF* /r/reloading, ar15

MP 193 Similar to 800x*

MP 194 Similar to 800x*

MP 195 Similar to 572** carolinafirearmsforum

MP 200 ##################

MP 200 Similar to Accurate #5*

MP 205-1 Similar to Accurate #5

MP 205-2 Similar to Accurate #5

MP 208-1 Similar to 800X

MP 208-2 Similar to 800X

MP 209-1 Similar to 800X** 10mm-auto, 10mm-auto, 10mm-auto, bayoushooter

MP 209-4 Similar to CBI

MP 209-5 Similar to CBI Pistol

MP 209-6 Similar to CBI Pistol

MP 211 Similar to Accurate #5*

MP 212-1 Similar to HS-6 /r/AmericanReloading

MP 212-3 Similar to HS-6

MP 212-4 Similar to HS-6

MP 212-5 Similar to HS-6

MP 215 Similar to Vectan D20 trapshooters

MP 220-1 Similar to Autocomp

MP 220-1 Similar to CFE Pistol

MP 221 Similar to Silhouette*

MP 225 Similar to CFE Pistol*

MP 227 NO ‘Similar to’, Use Data

MP 229-1 No similar to, use data

MP 229-1 Similar to

MP 229 NO ‘Similar to’, Use Data

MP 240 Similar to 572*

MP 244 Similar to IMR Blue*

MP 245 Similar to IMR Blue*

MP 246 Similar to IMR Blue*

MP 247 Similar to IMR Blue*

MP 248 Similar to IMR Blue

MP 249 Similar to IMR Blue* castboolits

MP 250 Similar to IMR Blue* ravenrocks forum

MP 251 Similar to Blue Dot* thehighroad

MP 252 Similar to Blue Dot*

MP 253 Similar to Blue Dot*

MP 254-1 Similar to 572 castboolits

MP 254-2 Similar to W572

MP 254 Similar to Blue Dot*

MP 255 Similar to Blue Dot*

MP 256 Similar to Blue Dot*

MP 257 Similar to Blue Dot*

MP 258 Similar to Blue Dot*

MP 260-1 Similar to Accurate #7 /r/AmericanReloading

MP 265 Similar to Accurate #7*

MP 275 Similar to Longshot**

MP 276-3 NO ‘Similar to’, Use Data

MP 277-3 NO ‘Similar to’, Use Data castboolits

MP 290-1 No similar to, use data

MP 290 Similar to Alliant 2400

MP 300 ##################

MP 300 Similar to Alliant 4100*

MP 310 Similar to Ramshot Enforcer*

MP 315 Similar to Alliant 4100*

MP 320 Similar to Lil Gun*

MP 325 Similar to Sunar 7.62*

MP 325 Similar to Win 296*

MP 329 Similar to H110*

MP 330-4 Similar to H110

MP 330 Similar to Win 296*

MP 332 Similar to H110*

MP 334-2 Similar to 11FS

MP 334-3 Similar to 11 FS

MP 335 Similar to H110*

MP 340 Similar to IMR 4227*

MP 348-3 Similar to Accurate 1680

MP 350 Similar to Accurate 1680

MP 355 Similar to Accurate 2200*

MP 375 Similar to Alliant Power Pro*

MP 380 Similar to Sunar 5.56*

MP 385-1 Similar to RL 10X

MP 395 Similar to IMR 3031*

MP 397 Similar to Benchmark*

MP 400 ##################

MP 400 Similar to N133*

MP 405 Similar to Benchmark** ar15

MP 410 Similar to SMP 739**

MP 414-1 Similar to H335

MP 414-7 Similar to H335

MP 414-8 Similar to H335

MP 414-9 Similar to H335

MP 415 Similar to H335** snipershide

MP 416-1 Similar to H335

MP 416-2 Similar to H335

MP 416-6 Similar to H335

MP 417-1 Similar to H335

MP 418 Similar to H335**

MP 420-1 Similar to X-Terminator

MP 424-1 Similar to Accurate 2230

MP 424-8 Similar to Accurate 2230

MP 425-1 Similar to Accurate 2230 ar15

MP 426-3 Similar to Accurate 2230

MP 426 Similar to Accurate 2230** /r/AmericanReloading

MP 427-1 Similar to Accurate 2460

MP 435 Similar to IMR 8208Xb**

MP 440 Similar to Ramshot TAC /r/reloading

MP 445 Similar to Alliant Power Pro*

MP 450 Similar to Ramshot TAC*

MP 455 Similar to H4895*

MP 459 Similar to H4895*

MP 460 Similar to H4895*

MP 470 Similar to Accurate 2495*

MP 475 [no Similar to] wethearmed, /r/reloading

MP 479 Similar to IMR 4064*

MP 480 Similar to IMR 4064*

MP 495 Similar to 2520*

MP 500 ##################

MP 500-1 Similar to RL 15

MP 501 Similar to 2520**

MP 502 Similar to Power Pro 2000-MR** (“poor temp stability”)

MP 503 Similar to Norma 203B

MP 510 Similar to Varget*

MP 513-1 Similar to Win 748

MP 514 Similar to Win 748*

MP 515-1 Similar to StaBall Match

MP 515-7 Similar to Win 748

MP 517 Similar to BL-C2*

MP 518 Similar to StaBall Match*

MP 519 Similar to BL-C2*

MP 520-1 Similar to StaBall Match

MP 520-2 Similar to StaBall Match

MP 520-8 Similar to StaBall Match

MP 520-9 Similar to StaBall Match

MP 520 Similar to StaBall Match** ar15

MP 521-1 Similar to BL-C2

MP 521-2 Similar to BL-C2

MP 521-3 Similar to BL-C2

MP 521 Similar to BL-C2 (“as close to BL-C2 you can get”)

MP 522 Similar to BL-C2**

MP 525 Similar to CFE 223* snipershide

MP 530-3 Similar to CFE 223

MP 537 Similar to Power Pro 2000-MR*

MP 538 Similar to Power Pro 2000-MR*

MP 540 Similar to Big Game*

MP 540 Similar to Vihtavuori N540** akreloading, natoreloading, northwestfirearms, /r/reloading

MP 541 Similar to Big Game*

MP 542 Similar to Big Game*

MP 543 Similar to Big Game*

MP 545 Similar to Big Game*

MP 549 Similar to Winchester 760

MP 550 Similar to 4000 MR

MP 551 Similar to Win 760

MP 553 Similar to Win 760*

MP 554 Similar to Win 760*

MP 555 Similar to Win 760*

MP 556 Similar to Win 760*

MP 560 Similar to Norma URP*

MP 565 Similar to N550*

MP 570 Similar to Accurate 2700*

MP 575-1 Similar to IMR 4350

MP 579 Similar to IMR 4451**

MP 580 Similar to IMR 4451* akreloading

MP 585 Similar to H4350*

MP 587-1 Similar to RL 17

MP 587-3 Similar to RL 17

MP 589 Similar to Big Game*

MP 590-1 Similar to Accurate 4360

MP 590 Similar to RL 17*

MP 595 Similar to IMR 4350*

MP 600 ##################

MP 600 Similar to Normal 204*

MP 605 Similar to Hybrid 100V*

MP 607 Similar to StaBall 6.5*

MP 608-1 Similar to StaBall 6.5

MP 609 Similar to StaBall 6.5**

MP 610-2 Similar to StaBall 6.5

MP 610 Similar to N550**

MP 611 Similar to StaBall 6.5*

MP 612 Similar to StaBall 6.5**

MP 613-1 Similar to StaBall

MP 613-1 Similar to Superformance

MP 615-3 Similar to Superformance

MP 615-4 Similar to Superformance

MP 615-6 Similar to Superformance

MP 615-7 Similar to Superformance

MP 620 Similar to Reloder 19 youtube

MP 622 Similar to IMR 4831*

MP 625 Similar to Ramshot Hunter*

MP 630 Similar to Ramshot Hunter*

MP 636 Similar to 4000 MR*

MP 636 Similar to N555**

MP 637 Similar to 4000 MR*

MP 638-2 Similar to H4831** akreloading

MP 638 Similar to Alliant 4000 MR*

MP 639 Similar to Alliant 4000 MR*

MP 640 Similar to IMR 4831*

MP 641 Similar to IMR 4831*

MP 642 Similar to 4000 MR*

MP 645 Similar to Power Pro N560*

MP 650 Similar to Superformance*

MP 651 Similar to Superformance*

MP 655-1 Similar to IMR 4955

MP 661 Similar to 4000 MR

MP 661 Supreme 780*

MP 662 Supreme 780*

MP 663 Similar to 4000 MR

MP 666 Supreme 780*

MP 667 Supreme 780*

MP 668 Supreme 780*

MP 669 Supreme 780*

MP 673 Similar to RL 22*

MP 675-3 Similar to RL 22

MP 680 Similar to RL 23*

MP 689 Similar to IMR 7828 SSC*

MP 690 Similar to Reloder 25*

MP 699 Similar to IMR 7828 SSC

MP 700 ##################

MP 700 Similar to Reloder 25*

MP 702 Similar to Ramshot Grand

MP 703-1 Similar to MagPro

MP 703 Similar to MagPro

MP 704 Similar to MagPro

MP 705 Similar to MagPro**

MP 710-7 Similar to H1000

MP 710-8 Similar to H1000

MP 710-9 Similar to H1000

MP 710 Similar to H1000

MP 711 Similar to Reloder 26 (“just like RL26 but not as fast”)

MP 713 Similar to H1000*

MP 714 Similar to H1000*

MP 715 Similar to Ramshot Magnum*

MP 716 Similar to Ramshot Grand

MP 717 Similar to Ramshot Magnum*

MP 718 Similar to Ramshot Magnum

MP 755 Similar to Hodgdon US869*

MP 773 Similar to Hodgdon US869*

MP 774 Similar to Hodgdon US869*

MP 775 Similar to Hodgdon US869*

MP 776 Similar to Hodgdon US869*

MP 777 Similar to Hodgdon US869*

WC 800 ##################

WC 844 Similar to H335

WC 846 Similar to BL-C2** (“much faster”)

about the list

I’ve made a good-faith effort to be accurate with the list data³ but could have made errors in collection or processing. As with all things reloading, do your own research and “start low, go slow”.

My preference is to take data directly from AR primary sources: email, site, label images. Data from secondary sources⁴ is marked with an asterisk (see below).
AR has a burn rate chart with MP powders on it, and often excerpts a pic from the chart on a powder listing.⁵ While useful, this list does not interpolate info from the chart.
A single asterisk (“*”) denotes data from mordecai’s table originally hosted on the steelchickens forum in 2024.⁶ Double asterisks (“**”) denote user reports that AR gave Similar to info for that powder. In either cases when/if I corroborate from primary sources I’ll remove the asterisk[s].
links are to results from testing with a listed powder. Note: links to castbullits will likely require registering to read the links. You might be able to use archive.org or similar.
NO ‘Similar to’, Use Data seems to be shown when AR has not listed a Similar to in the database. I assume there’s a null variable that’s not displaying.

I have not seen an MP XXX-batchnum that had a different Similar to from it’s parent (MP XXX). If this is something we can count on then batch numbers might be stripped out for legibility and just MP XXX entries preserved. That would preclude the ability to add parenthetical notes to batches, though.

Srsly: do not take my word (or anyone else’s) on matters of reloading. Get some manuals, start with light charges and work up, etc. You are responsible for your own loads as I am mine.

Also see the BSK reloading calculator announced in this reddit thread.

my wild-assed guess is that the suppliers with retail channels wanted some level of obfuscation. Text from an email reportedly from AR suggested that even Similar to requires approval from someone. ↩
And as of this writing the Similar to is shown in the newsletter and no where else. ↩
It’s worth noting that I am not claiming that MP-whatever is similar to a given powder. AR is claiming that. Or more obliquely in the case of asterisked entries, someone is publicly stating that MP has claimed that. ↩
sorry, my academic training was in historical fields so this is the way my head works. ↩
For example, MP 414 is shown in the newsletter as Similar to H335. The website listing shows a chart section ~centered on H335. The chart extract itself does not show MP 414 which suggests that the chart and/or screencaps are not updated in tandem with the database. ↩
Either the file is gone or requires a login to see it. I archived a (compressed) copy here. mordecai also includes the sample load data from the website. ↩

Midwest Powders from American Reloading

Midwest Powders and referenced “Similar to” powders

the list

about the list

Share on