Large Rifle Magnum (LRM) Primers
Primers are a key ammunition reloading component. They are needed to ignite the powder charge.
There a seven primer sizes which differ by use (pistol vs. rifle ammunition), size (small vs. large) and force (normal vs. magnum): SP = Small Pistol Primers | SPM = Small Pistol Magnum Primers | LP = Large Pistol Primers | LPM = Large Pistol Magnum Primers | SR = Small Rifle Primers | LR = Large Rifle Primers | LRM = Large Rifle Magnum Primers.
Below you find a table with some common calibers / cartridges which use Large Rifle Magnum primers. Also find further below some common products in this primer size:
RWS 5333 Large Rifle Magnum (LRM) Primers
A large number of Olympic victories prove the excellent quality of RWS ammunition, which many well-known and competent top shooters rely on. In addition, rifle cartridges and components from RWS stand for the highest quality standard and first-class precision.RWS primers are subject to demanding quality tests. The igniter is produced on a state-of-the-art production facility that was installed a few years ago. Production is carried out in the order of punching, drawing the cup, inserting the primer, drying and pressing, and pressing in the anvil, accompanied by integrated, automatic quality checks. The RWS 5333 Large Rifle Magnum (LRM) Primers have specifically been developed for large rifle magnum cartridges. Find all Large Rifle Magnum (LRM) Primers by following the Link.The most important features at a glance:Sinoxide primersAvailable for almost all igniter typesManufactured to the highest quality levelCan be used in all standard reloading toolsPerfect burning behavior even with large-volume casesCommon Cartridges suitable for this Primer Size
CartridgeBullet DiameterPrimer Size
25-300 Remington Ultra Magnum257LRM
257 Weatherby Magnum257LRM
264 Winchester Magnum264LRM
270 Weatherby Magnum277LRM
270 Win Short Mag (WSM)277LRM
300 Dakota308LRM
300 H&H Magnum308LRM
300 Jarrett308LRM
300 Lapua Magnum308LRM
300 Pegasus308LRM
300 Rem Short Action Ultra Mag308LRM
300 Remington Ultra Magnum308LRM
300 Weatherby Magnum308LRM
300 Win Short Mag (WSM)308LRM
300 Winchester Magnum308LRM
30-338 Lapua Magnum308LRM
30-338 Winchester Magnum308LRM
30-378 Weatherby Magnum308LRM
308 Baer308LRM
308 Norma Magnum308LRM
30-8mm Remington Magnum308LRM
325 Winchester Short Magnum (WSM)323LRM
330 Dakota338LRM
338 Lapua Magnum338LRM
338 Remington Ultra Magnum338LRM
338 Winchester Magnum338LRM
338-300 Win Short Mag (WSM)338LRM
338-300 Winchester Magnum338LRM
338-378 Weatherby Magnum338LRM
338-8mm Remington Magnum338LRM
340 Weatherby Magnum338LRM
350 Remington Magnum358LRM
358 Norma Magnum358LRM
35-8mm Remington Magnum358LRM
375 Dakota375LRM
375 H&H Flanged Magnum375LRM
375 H&H Magnum375LRM
375 Remington Ultra Magnum375LRM
375 Weatherby Magnum375LRM
375-338 Winchester Magnum375LRM
375-350 Remington Magnum375LRM
378 Weatherby Magnum375LRM
416 Dakota416LRM
416 Hoffman416LRM
416 Remington Magnum416LRM
416 Rigby416LRM
416 Taylor416LRM
416 Weatherby Magnum416LRM
416-300 Remington Ultra Magnum416LRM
404 Jeffery422LRM
425 Express423LRM
450 Ackley Magnum458LRM
450 Dakota458LRM
458 Lott458LRM
458 Winchester Magnum458LRM
Common Cartridges using this Primer Size
Cartridge | Bullet Diameter | Primer Size |
357 Automag | 357 | LP |
38-45 ACP | 357 | LP |
10mm Auto | 401 | LP |
38-40 WCF | 401 | LP |
400 Cor-Bon | 401 | LP |
41 Remington Magnum | 410 | LP |
44 Russian | 429 | LP |
44 Remington Magnum | 430 | LP |
44 Special | 430 | LP |
445 Super Magnum | 430 | LP |
45 ACP | 451 | LP |
45 Auto Rim | 451 | LP |
45 GAP | 451 | LP |
45 Winchester Magnum | 451 | LP |
45 Colt (Long Colt) | 452 | LP |
45 S&W Schofield | 454 | LP |
455 Webley | 454 | LP |
219 Donaldson Wasp | 224 | LR |
219 Zipper | 224 | LR |
22 BR (Bench Rest) | 224 | LR |
22 CHeetah | 224 | LR |
220 Jaybird | 224 | LR |
220 Swift | 224 | LR |
220 Weatherby Rocket | 224 | LR |
220 Wilson Arrow | 224 | LR |
22-250 Remington | 224 | LR |
223 Win Short Mag | 224 | LR |
223 Win Super Short Mag (WSSM) | 224 | LR |
224 Clark | 224 | LR |
224 Weatherby Magnum | 224 | LR |
225 Winchester | 224 | LR |
240 Gibbs | 243 | LR |
240 Page Souper Pooper | 243 | LR |
240 Weatherby Magnum | 243 | LR |
243 Catbird | 243 | LR |
243 Win Short Mag | 243 | LR |
243 Win Super Short Mag (WSSM) | 243 | LR |
243 Winchester | 243 | LR |
25 Gibbs | 257 | LR |
25 Remington | 257 | LR |
25 Souper (25-308 Winchester) | 257 | LR |
25 Win Super Short Mag (WSSM) | 257 | LR |
250 Savage | 257 | LR |
25-06 Remington | 257 | LR |
25-20 WCF | 257 | LR |
25-284 Winchester | 257 | LR |
25-300 Win Short Mag (WSM) | 257 | LR |
25-35 WCF | 257 | LR |
25-36 Marlin | 257 | LR |
257 Roberts | 257 | LR |
257 STW | 257 | LR |
260 Remington | 264 | LR |
270 Gibbs | 277 | LR |
270 Winchester | 277 | LR |
270-284 Winchester | 277 | LR |
270-308 Winchester | 277 | LR |
276 Pedersen | 284 | LR |
280 Remington and 7mm Express | 284 | LR |
284 Winchester | 284 | LR |
30 Gibbs | 308 | LR |
30 Herrett | 308 | LR |
30 Remington | 308 | LR |
300 Savage | 308 | LR |
30-06 Springfield | 308 | LR |
30-284 Winchester | 308 | LR |
303 Savage | 308 | LR |
30-30 Winchester | 308 | LR |
30-40 Krag | 308 | LR |
307 Winchester | 308 | LR |
308 Winchester | 308 | LR |
308x1.5” | 308 | LR |
308x1.75” | 308 | LR |
303 British | 312 | LR |
32 Remington | 320 | LR |
32-40 WCF | 320 | LR |
32 Winchester Special | 321 | LR |
33 WCF | 338 | LR |
338 Marlin Express | 338 | LR |
338-06 A-Square | 338 | LR |
338-284 Winchester | 338 | LR |
348 Winchester | 348 | LR |
356 Winchester | 357 | LR |
357 Herrett | 357 | LR |
35 Remington | 358 | LR |
35 Whelen | 358 | LR |
35 Winchester | 358 | LR |
35-284 Winchester | 358 | LR |
358 Winchester | 358 | LR |
375 Ruger | 375 | LR |
375 Whelen | 375 | LR |
375 Winchester | 375 | LR |
375-284 Winchester | 375 | LR |
376 Steyr | 375 | LR |
38-55 WCF | 376 | LR |
38-72 WCF | 378 | LR |
40-50 Sharps Bottle Neck | 403 | LR |
40-50 Sharps Straight | 403 | LR |
40-70 Sharps Bottle Neck | 403 | LR |
40-70 Sharps Straight | 403 | LR |
40-90 Sharps Bottle Neck | 403 | LR |
40-90 Sharps Straight | 403 | LR |
40-60 WCF | 404 | LR |
450-400 Nitro Express 3” | 405 | LR |
401 Winchester Self-Loading | 406 | LR |
40-65 WCF | 406 | LR |
40-82 WCF | 406 | LR |
405 Winchester | 411 | LR |
10.3x60mm Rimmed Swiss | 415 | LR |
44-40 WCF | 427 | LR |
444 Marlin | 429 | LR |
425 Westley Richards | 435 | LR |
43 Spanish | 439 | LR |
11x59mm Rimmed French Gras 43 Mauser | 445 | LR |
45-100 Sharps Straight | 451 | LR |
45-110 Sharps Straight | 451 | LR |
45-120 Sharps Straight | 451 | LR |
45-60 WCF | 454 | LR |
45-75 WCF | 454 | LR |
45-90 WCF (45-85 WCF) | 457 | LR |
450 Marlin | 458 | LR |
450 Nitro Express | 458 | LR |
450 Number 2 Nitro Express 3-1/2” | 458 | LR |
45-70 Government | 458 | LR |
458x2” American | 458 | LR |
25-300 Remington Ultra Magnum | 257 | LRM |
257 Weatherby Magnum | 257 | LRM |
264 Winchester Magnum | 264 | LRM |
270 Weatherby Magnum | 277 | LRM |
270 Win Short Mag (WSM) | 277 | LRM |
300 Dakota | 308 | LRM |
300 H&H Magnum | 308 | LRM |
300 Jarrett | 308 | LRM |
300 Lapua Magnum | 308 | LRM |
300 Pegasus | 308 | LRM |
300 Rem Short Action Ultra Mag | 308 | LRM |
300 Remington Ultra Magnum | 308 | LRM |
300 Weatherby Magnum | 308 | LRM |
300 Win Short Mag (WSM) | 308 | LRM |
300 Winchester Magnum | 308 | LRM |
30-338 Lapua Magnum | 308 | LRM |
30-338 Winchester Magnum | 308 | LRM |
30-378 Weatherby Magnum | 308 | LRM |
308 Baer | 308 | LRM |
308 Norma Magnum | 308 | LRM |
30-8mm Remington Magnum | 308 | LRM |
325 Winchester Short Magnum (WSM) | 323 | LRM |
330 Dakota | 338 | LRM |
338 Lapua Magnum | 338 | LRM |
338 Remington Ultra Magnum | 338 | LRM |
338 Winchester Magnum | 338 | LRM |
338-300 Win Short Mag (WSM) | 338 | LRM |
338-300 Winchester Magnum | 338 | LRM |
338-378 Weatherby Magnum | 338 | LRM |
338-8mm Remington Magnum | 338 | LRM |
340 Weatherby Magnum | 338 | LRM |
350 Remington Magnum | 358 | LRM |
358 Norma Magnum | 358 | LRM |
35-8mm Remington Magnum | 358 | LRM |
375 Dakota | 375 | LRM |
375 H&H Flanged Magnum | 375 | LRM |
375 H&H Magnum | 375 | LRM |
375 Remington Ultra Magnum | 375 | LRM |
375 Weatherby Magnum | 375 | LRM |
375-338 Winchester Magnum | 375 | LRM |
375-350 Remington Magnum | 375 | LRM |
378 Weatherby Magnum | 375 | LRM |
416 Dakota | 416 | LRM |
416 Hoffman | 416 | LRM |
416 Remington Magnum | 416 | LRM |
416 Rigby | 416 | LRM |
416 Taylor | 416 | LRM |
416 Weatherby Magnum | 416 | LRM |
416-300 Remington Ultra Magnum | 416 | LRM |
404 Jeffery | 422 | LRM |
425 Express | 423 | LRM |
450 Ackley Magnum | 458 | LRM |
450 Dakota | 458 | LRM |
458 Lott | 458 | LRM |
458 Winchester Magnum | 458 | LRM |
22 Cooper Centerfire Mag (CCM) | 221 | SP |
22 Remington Jet | 223 | SP |
25 ACP | 251 | SP |
256 Winchester Magnum | 257 | SP |
30 Luger | 308 | SP |
30 Mauser | 308 | SP |
32 ACP | 309 | SP |
32 H&R Magnum | 312 | SP |
32 S&W Long | 312 | SP |
32 S&W Short | 312 | SP |
32 Short Colt | 313 | SP |
38 Super | 355 | SP |
380 ACP | 355 | SP |
357 Sig | 356 | SP |
38 Long Colt | 357 | SP |
38 Special | 357 | SP |
38 S&W | 359 | SP |
41 Long Colt | 386 | SP |
40 S&W | 401 | SP |
40 Super | 401 | SP |
357 Magnum | 357 | SPM |
357 Maximum | 357 | SPM |
17 Hornet | 172 | SR |
17 Javelina | 172 | SR |
17 Mach 4 | 172 | SR |
17 Remington | 172 | SR |
20 Tactical | 204 | SR |
204 Ruger | 204 | SR |
218 Bee | 224 | SR |
22 Hornet | 224 | SR |
22 PPC | 224 | SR |
220 Russian | 224 | SR |
221 Fireball | 224 | SR |
222 Remington | 224 | SR |
222 Remington Magnum | 224 | SR |
223 Remington | 224 | SR |
25 TCU | 257 | SR |
25-20 Single Shot | 257 | SR |
25-222 Remington Magnum | 257 | SR |
28-30 Stevens | 285 | SR |
30 BR (Bench Rest) | 308 | SR |
30 Carbine | 308 | SR |
30-223 Remington | 308 | SR |
32-20 WCF | 312 | SR |
310 Cadet | 316 | SR |
351 Winchester Self-Loading | 351 | SR |
454 Casull | 452 | SR |
Large rifle magnum primers are a type of primer used in ammunition reloading for firearms. They are designed for use in cartridges with large rifle calibers, such as .30-06, .300 Winchester Magnum, and .338 Lapua Magnum. The "magnum" in their name indicates that they are designed for use with high-performance loads that require a hotter and more consistent ignition than standard primers can provide.
Like other types of primers, large rifle magnum primers consist of three main components: the cup, the anvil, and the primer compound. The cup is a small metal case that holds the primer compound and provides a surface for the firing pin to strike. The anvil is a small piece of metal that sits inside the cup and helps to ignite the primer compound. The primer compound is a highly sensitive explosive mixture that is designed to ignite quickly and consistently when struck by the firing pin.
The primer compound in large rifle magnum primers is typically composed of a mixture of chemicals that are highly reactive and heat-sensitive. This includes compounds like lead styphnate, which is commonly used in most types of primers, as well as other chemicals like barium nitrate, antimony sulfide, and other proprietary ingredients that are specific to each manufacturer.
Like other types of primers, large rifle magnum primers consist of three main components: the cup, the anvil, and the primer compound. The cup is a small metal case that holds the primer compound and provides a surface for the firing pin to strike. The anvil is a small piece of metal that sits inside the cup and helps to ignite the primer compound. The primer compound is a highly sensitive explosive mixture that is designed to ignite quickly and consistently when struck by the firing pin.
The primer compound in large rifle magnum primers is typically composed of a mixture of chemicals that are highly reactive and heat-sensitive. This includes compounds like lead styphnate, which is commonly used in most types of primers, as well as other chemicals like barium nitrate, antimony sulfide, and other proprietary ingredients that are specific to each manufacturer.