With new calibers and cartridges popping up almost weekly, as so many gunsmiths and precision rifle builders want to improve on designs, re-barreling and chamber change of rifles is becoming much more common. The main question for shooters that want to re-barrel and re chamber their rifles to a new caliber or cartridge, is firstly if the new cartridge base will fit in and extract with the current bolt face, secondly if the new cartridge will fit in the action and cycle out of the magazine, and lastly what other if any custom work needs to be done either to the bolt or the action.
We have found quite a few smaller fragmented resources showing pieces of the information needed in various forums and chat groups on the internet and social networks, but decided to compile a larger database in one spot, for all to see and learn from, and will periodically update the database as we learn of new calibers and cartridges becoming available and popular.

If you disagree with anything listed in this database, or want to add anything new to it, please do go ahead and contact us with your recommendations for changes or additions as we are also still in the ongoing learning process and appreciate any feedback and information we can find.
The first database, is of the Various cartridges that can work with the same bolt faces and action lengths. There are basically four main bolt face diameters and two action lengths that cover most cartridges, with just a few falling outside of those.
Bolt Face Database
Bolt Face Diameter (inches) | Caliber | Action Length |
---|---|---|
.384 +/- | 17 Rem | Short Action |
.384 +/- | 204 Ruger | Short Action |
.384 +/- | 222 Rem | Short Action |
.384 +/- | 223 Rem | Short Action |
.384 +/- | 20 Nosler | Short Action |
.384 +/- | 22 Nosler | Short Action |
.384 +/- | 24 Nosler | Short Action |
.445 | 6mm PPC | Short Action |
.470 +/- | 220 Swift | Short Action |
.470 +/- | 225 Win | Short Action |
.470 +/- | 22-250 Rem | Short Action |
.470 +/- | 22 Creedmoor | Short Action |
.470 +/- | 22XC | Short Action |
.470 +/- | 243 Win | Short Action |
.470 +/- | 250 Savage | Short Action |
.470 +/- | 260 Rem | Short Action |
.470 +/- | 6mm Norma BR | Short Action |
.470 +/- | 6mm Creedmoor | Short Action |
.470 +/- | 6mm XC | Short Action |
.470 +/- | 6mm Super LR | Short Action |
.470 +/- | 6mm-284 | Short Action |
.470 +/- | 6.5/284 Norma | Short Action |
.470 +/- | 6.5mm Creedmoor | Short Action |
.470 +/- | 7/08 Rem | Short Action |
.470 +/- | 284 win | Short Action |
.470 +/- | 300 Savage | Short Action |
.470 +/- | 308 Win | Short Action |
.470 +/- | 338 Federal | Short Action |
.470 +/- | 35 Rem | Short Action |
.470 +/- | 358 Winchester | Short Action |
.540+/- | 223 WSSM | Short Action |
.540+/- | 243 WSSM | Short Action |
.540+/- | 25 WSSM | Short Action |
.540+/- | 270 WSM | Short Action |
.540+/- | 6.5 x 300 Weatherby | Short Action |
.540+/- | 6.5 PRC | Short Action |
.540+/- | 6.5mm GAP 4S (SAUM) | Short Action |
.540+/- | 7mm Rem saum | Short Action |
.540+/- | 7mm WSM | Short Action |
.540+/- | 300 Rem saum | Short Action |
.540+/- | 300 WSM | Short Action |
.540+/- | 325 WSM | Short Action |
.540+/- | 350 Legend | Short Action |
.540+/- | 350 Rem Mag | Short Action |
.470 +/- | 6mm Rem | Long Action |
.470 +/- | 240 Weatherby Mag | Long Action |
.470 +/- | 257 Roberts | Long Action |
.470 +/- | 25-06 Rem | Long Action |
.470 +/- | 6.5×55 Swedish | Long Action |
.470 +/- | 6.5-06 A-Square | Long Action |
.470 +/- | 270 Win | Long Action |
.470 +/- | 7×57 Mauser | Long Action |
.470 +/- | 7×64 Brenneke | Long Action |
.470 +/- | 280 Rem | Long Action |
.470 +/- | 30-06 Springfield | Long Action |
.470 +/- | 8mm Mauser | Long Action |
.470 +/- | 338/06 A Square | Long Action |
.470 +/- | 35 Whelen | Long Action |
.540 +/- | 257 Weatherby | Long Action |
.540 +/- | 264 Win Mag | Long Action |
.540 +/- | 270 Weatherby Mag | Long Action |
.540 +/- | 7mm Rem Mag | Long Action |
.540 +/- | 7mm Weatherby Mag | Long Action |
.540 +/- | 7 STW | Long Action |
.540 +/- | 7mm Rem Ultra Mag | Long Action |
.540 +/- | 300 H & H | Long Action |
.540 +/- | 300 Win Mag | Long Action |
.540 +/- | 300 PRC | Long Action |
.540 +/- | 300 Weatherby Mag | Long Action |
.540 +/- | 300 RUM | Long Action |
.540 +/- | 303 Brit | Long Action |
.540 +/- | 8mm Rem Mag | Long Action |
.540 +/- | 338 Win Mag | Long Action |
.540 +/- | 338 EDGE | Long Action |
.540 +/- | 340 Weatherby Mag | Long Action |
.540 +/- | 338 RUM | Long Action |
.540 +/- | 375 H & H | Long Action |
.540 +/- | 375 Weatherby | Long Action |
.540 +/- | 375 RUM | Long Action |
.540 +/- | 416 Rem Mag | Long Action |
.540 +/- | 458 Win Mag | Long Action |
.540 +/- | 458 Lott | Long Action |
.585 +/- | 30/378 Weatherby | Long Action |
.585 +/- | 338 Lapua | Long Action |
.585 +/- | 338/378 Weatherby | Long Action |
.585 +/- | 378 Weatherby mag | Long Action |
.585 +/- | 416 Rigby | Long Action |
.585 +/- | 416 Weatherby Mag | Long Action |
.585 +/- | 460 Weatherby Mag | Long Action |
.585 +/- | 470 Nitro Express | Long Action |
.585 +/- | 300 Norma Mag | Magnum Action |
.585 +/- | 338 Norma Mag | Magnum Action |
.640 | 375 CheyTac | Magnum Action |
.640 | 408 CheyTac | Magnum Action |
.640 | 505 Gibbs | Magnum Action |
Next up is a database showing the more precise diameters of the case heads of the difference cartridges, and the COAL (cartridge overall length) most common on those cartridges.
Case Head & COAL Database
Caliber | Case Head | COAL |
---|---|---|
17 Rem | .378″ | 2.17″ |
17 Mach4 | .378″ | 1.77″ |
204 Ruger | .378″ | 2.26″ |
22 RemJet | .439″ | 1.66″ |
22 Hornet | .35″ | 1.8″ |
22 KHornet | .35″ | 1.75″ |
22 Spitfire | .356″ | 1.65″ |
218 Bee | .408″ | 1.63″ |
218 Mashburn | .408″ | 1.63″ |
221 Fireball | .378″ | 1.84″ |
222 Rem | .378″ | 2.2″ |
222 RemMag | .378″ | 2.33″ |
223 Rem | .378″ | 2.3″ |
223 RemAI | .378″ | 2.3″ |
220 Russian | .441″ | 2.07″ |
22 PPC | .44″ | 2.07″ |
219 Zipper | .506″ | 2.4″ |
22 BR | .473″ | 2″ |
225 Win | 473″ | 2.43″ |
224 WeatherbyMag | .43″ | 2.38″ |
22-250 Rem | .472″ | 2.35″ |
22 XC | .467″ | 2.5″ |
22 Creedmoor | .473″ | 2.825″ |
220 Swift | .473″ | 2.7″ |
220 Redline | .534″ | 2.8″ |
224 Clark | .473″ | 3.08″ |
22 CheetahMkI | .473″ | 2.5″ |
223 WSSM | .535″ | 2.36″ |
22 SavHiPower | .492″ | 2.51″ |
6mm-223 Rem | .378″ | 2.26″ |
6mm PPC | .441″ | 2.19″ |
6mm BR | .473″ | 2.2″ |
6mm XC | .467″ | 2.5″ |
6mm Creedmoor | .473″ | 2.825″ |
6mm Super LR | .473″ | 2.8″ |
6mm TCU | .378″ | 2.5″ |
6mm-284 Win | .473″ (rebated) | 2.83″ |
243 Win | .473″ | 2.65″ |
6mm Rem | .473″ | 2.83″ |
240 WbyMag | .473″ | 3.08″ |
6.17 Spitfire | .53″ | 2.8″ |
243 WSSM | .535″ | 2.36″ |
240 Apex (BeltedNE) | .475″ | 3.21″ |
256 WinMag | .44″ | 1.78″ |
25-21 Stevens | .376″ | 2.3″ |
25-25 Stevens | .376″ | 2.63″ |
25 Rem | .421″ | 2.53″ |
250 Sav | .472″ | 2.4″ |
257 Roberts | .467″ | 2.99″ |
25-’06 Rem | .473″ | 3.25″ |
25-284 Win | .473″ (rebated) | 2.93″ |
257 WbyMag | .53″ | 3.3″ |
6.3 Scramjet | .53″ | 3.58″ |
6.5 Japanese | .466″ | 2.85″ |
6.5 Carcano | .449″ | 2.94″ |
6.5×54 Mann-Schoen | .453″ | 2.99″ |
6.5mm-257 Bob | .467″ | 2.75″ |
260 Rem | .473″ | 2.84″ |
6.5mm Creedmoor | .473″ | 2.825″ |
6.5mm GAP 4S (SAUM) | .534″ | 2.85″ |
6.5 PRC | .532″ | 2.955″ |
6.5×55 Swede | .476″ | 3.03″ |
6.5mm-284 Win | .5″ | 2.95″ |
6.71 Phantom | .53″ | 2.8″ |
6.5mm-’06 A-Square | .473″ | 3.2″ |
6.5 RemMag | .532″ | 3.05″ |
264 WinMag | .532″ | 3.35″ |
270 Win | 473″ | 3.35″ |
270 WSM | .535″ | 2.86″ |
270 WbyMag | .53″ | 3.28″ |
7×33 Sako | .394″ | 1.73″ |
7mm TCU | .378″ | 2.68″ |
7mm BR | .473″ | 2.33″ |
7-30 Waters | .506″ | 2.55″ |
7mm-08 Rem | .473″ | 2.8″ |
7×57 | .473″ | 3.02″ |
284 Win | .473″(rebated) | 2.95″ |
7×64 Brenneke | .473″ | 3.3″ |
280 Rem | .473″ | 3.33″ |
7.21 Tomahawk | .577″ | 2.8″ |
7mm SAUM | .534″ | 2.84″ |
7mm WSM | .535″ | 2.86″ |
7mm RemMag | .532″ | 3.29″ |
7mm WbyMag | .53″ | 3.26″ |
7mm STW | .532″ | 3.6″ |
7mm-300 WbyMag | .532″ | 3.72″ |
7mm RUM | .534″ | 3.6″ |
7.21 Firebird | .577″ | 3.6″ |
7mm Dakota | .545″ | 3.33″ |
28-30 Stevens | .412″ | 2.82″ |
7mm H&H | .532″ | 3.22″ |
7mm Rigby | .528″ | 3.25″ |
300 Sherwood | .37″ | 2.2″ |
7.35 Carcano | .449″ | 2.9″ |
300 Whisper | .378″ | 2.26″ |
303 Sav | .503″ | 2.52″ |
300 Sav | .473″ | 2.6″ |
308 Win | .473″ | 2.8″ |
7.5×54 MAS | .482″ | 2.99″ |
7.5 Schmidt-Rubin | .495″ | 3.03″ |
30-’06 Springfield | .473″ | 3.34″ |
30 Gibbs | .471″ | 3.34″ |
300 SAUM | .534″ | 2.83″ |
7.82 Patriot | .577″ | 2.8″ |
300 WSM | .535″ | 2.86″ |
30-338 WinMag | .532″ | 3.34″ |
308 NormaMag | .532″ | 3.28″ |
300 H&H | .532″ | 3.65″ |
300 WinMag | .532″ | 3.34″ |
300 WbyMag | .53″ | 3.56″ |
300 RUM | .534″ | 3.6″ |
300 Dakota | .545″ | 3.43″ |
7.82 Warbird | .577″ | 3.6″ |
30-378 WbyMag | .603″ | 3.67″ |
7.62×45 Czech | .441″ | 2.45″ |
7.62×39 Russian | .443″ | 2.19″ |
303 Brit | .525″ | 3.08″ |
7.7mm Japanese | .471″ | 3.17″ |
7.65 ArgentineMauser | .473″ | 2.95″ |
310 Cadet | .405″ | 1.59″ |
8×57 Mauser | .473″ | 2.99″ |
8mm-’06 Spr | .473″ | 3.18″ |
8×60 S | .473″ | 3.1″ |
8×64 Brenneke | .52″ | 3.65″ |
8×64 Sauer | .499″ | 3.2″ |
8×68 SMag | .524″ | 3.4″ |
8mm RemMag | .532″ | 3.6″ |
318 WestleyRichards | .465″ | 3.35″ |
33 Jeffrey | .534″ | 3.45″ |
338-’06 A-Square | .473″ | 3.34″ |
8.59 Galaxy | .577″ | 2.8″ |
338 WinMag | .532″ | 3.34″ |
340 WbyMag | .53″ | 3.68″ |
338 RUM | .534″ | 3.6″ |
338 Norma | .588″ | 3.60″ |
338 EDGE | .534″ | 3.80″ |
330 Dakota | .545″ | 3.33″ |
8.59 Titan | .577″ | 3.6″ |
338 LapuaMag | .588″ | 3.68″ |
338-378 WbyMag | .603″ | 3.76″ |
36 NitroExpress | .48″ | 2.98″ |
400-350 NE-Rigby | .52″ | 3.55″ |
350 RigbyMag | .525″ | 3.57″ |
35 Rem | .46″ | 2.51″ |
358 Win | .473″ | 2.78″ |
35 Whelen | .473″ | 3.26″ |
350 RemMag | .532″ | 2.93″ |
358 NormaMag | .532″ | 3.28″ |
9.3×57 Mauser | .469″ | 3.23″ |
9.3×62 Mauser | .473″ | 3.29″ |
400-375 BeltedNE | .466″ | 3″ |
375 H&H | .532″ | 3.6″ |
375 Ruger | .532″ | 3.34″ |
376 Steyr | .504″ | 3.11″ |
375 WbyMag | .53″ | 3.69″ |
375 Rum | .535″ | 3.6″ |
375 Dakota | .545″ | 3.33″ |
378 WbyMag | .603″ | 3.65″ |
375 RimlessNE2-1/4 | .473″ | 2.94″ |
10.15×61 Jarmann | .615″ | 3.06″ |
404 Basic | .542″ | 3.6″ |
416 Taylor | .532″ | 3.38″ |
416 RemMag | .532″ | 3.6″ |
10.57Meteor | .577″ | 3.62″ |
416 Dakota | .545″ | 3.65″ |
500-416 RimlessNE | .59″ | 3.91″ |
416 WbyMag | .603″ | 3.75″ |
416 Rigby | .59″ | 3.75″ |
404 Jeffreys | .537″ | 3.53″ |
10.75×68 Mauser | .492″ | 3.16″ |
425 WestleyRichards | .467″ | 3.3″ |
11.2×72 Schuler | .536″ | 3.85″ |
11.75×36 Montenegrin | .555″ | 1.73″ |
43 Mauser | .586″ | 3″ |
458 WinMag | .532″ | 3.3″ |
458 Lott | .532″ | 3.6″ |
450 Dakota | .582″ | 3.74″ |
460 WbyMag | .603″ | 3.71″ |
461 Gibbs | .626″ | 3.85″ |
470 Capstick | .532″ | 3.6″ |
50 Beowulf | .445″ | 2.24″ |
505 Gibbs | .64″ | 3.75″ |
500 Jeffrey | .615″ | 3.5″ |
50 BMG | .804″ | 5.45″ |
585 Nyati | .66″ | 3.53″ |
600-577 Rewa | .66″ | 3.7″ |