The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Gunsmithing Can 308 Marlin express 336 be converted to 307 winchester? What must be done?Go | New | Find | Notify | Tools | Reply | |
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Many years ago,I had a win 94 in 307 win. Liked it, but got an affer I couldn't refuse. I still have a ton of brass and 170gn 30 cal fp nosler partitions. The new 308 Marlin rifles are very nice. They are configured like the old 336A, with a 24" barrel and have a forend cap. Very classy IMHO. Can the 336 308 express rifle be simply rechambered? Must the extractor be modified a little? Or, must you rebarrel? The looks like a cool project someday. Matt FISH!! Heed the words of Winston Smith in Orwell's 1984: "Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right." | ||
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Marlin made a few copies of their 336 chambered for the .307 back when it was introduced but found that the .307 produced too high a pressure (60K psi) for the 336 to comfortably handle. Marlin stopped making them quickly and IIRC may have recalled all the ones sold as well. Given Marlins findings on this I'd say that it would not be prudent to rechamber to .307 even if it is dimensionally possible. | |||
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dunno saammi in 308M iirc, marlin did NOT recall the 307 to an off the market status ... its not loaded from the factory at 60K psi . the danger of a 307 is that a 308 can be unsafely LOADED and fired from a 336/94xtr. 308 commerial loads are NOT 7.62 nato (see cetme and the spanish 7,62 mausers for why) by nearly 10k psi 307 and 357 are the rimmed versions of their siblings, and are fine rounds, that were largly ignored due to bing odd. of the 308M, its 4gr less capacity than a 307 .. i would NOT spend 1 red cent to ruin the value of th marlin by making it a 307, as you can buy the 307, ,from time to time, for less than net cost of selling th 308m and the cost of a reamer besides, the 308M ballistically is a 307 opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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The 308 Marlin Express doesn't seem to be doing to well, just like the 307. If I could rechamber to 307 I doubt I would ever get rid of it. My question really hasn't yet been answered. You can get a model 94, but I like the longer barrel set up used by Marlin. They just seem classy, Like the win model 64. Matt FISH!! Heed the words of Winston Smith in Orwell's 1984: "Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right." | |||
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You won't get an answer from me but you will get a question...Why? The 308 Marlin and the 307 win with 170 grn bullets are ballistic twins. For the cost of the gunsmithing you could go buy a lot of brass Mike Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.  What I have learned on AR, since 2001: 1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken. 2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps. 3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges. 4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down. 5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine. 6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle. 7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions. 8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA. 9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not. 10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact. 11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores. 12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence. 13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances. | |||
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Here is my take-- and I do own both a winchester 94 big bore in .307 and a malin xlr in .308me. Firstly, there is no ballistic difference between the 2 rounds. Secondly, the marlin xlr is different than the 336 action in the area of the way the barrel threads are cut. They are cut so there is more surface area thus they will take a bit higher pressure than the standard 336. (search it over at marlinowners websight if you want the engineering breakdown). If you have to have a 307 in a marlin, you could get it made up, but you should start with the 444 version rather than the 308me version because of the size of the bolt. Its going to cost beaucoup bucks-- $700+ for the xlr and probably another $1000 for the gunsmithing. Make life easy-- sell your 307 stuff and buy a 308me, before Remington discontinues the gun. | |||
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CIP maximum average pressure of the .307 is 60K psi just as it is for the .308 Winchester. That is too stout for the 336 action. Several discussions of this over on www.marlinowners.com | |||
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I think you guys are getting your number mixed up. My Sammi manual states. 307= 52K CUP/62K transducer PSI 308 win = 52K CUP/62K transducer PSI Are you guys talking copper units or PSI?? www.KLStottlemyer.com Deport the Homeless and Give the Illegals citizenship. AT LEAST THE ILLEGALS WILL WORK | |||
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55cup is 62,500 psi, more or less .. 52 is, well, less ... why do i know this? ye olde 375HH is 55K cup opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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Pressures in cup vs. psi are different from one cartridge to the next. Some are identicle, but most are not. Handloader magazine had an article on this several years ago. As marginal as it may be, the 307 has more capacity. The 308 express uses proprietary powders that we can't yet get, (or so the gun mags said when the round came out). I like the 307. Matt FISH!! Heed the words of Winston Smith in Orwell's 1984: "Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right." | |||
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Matt, its a realative scale, and varies.. 28K is the same, and 55k cup is 62,500kpsi .. i've never heard it varies per cart, but one learns something new every day opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Gunsmithing Can 308 Marlin express 336 be converted to 307 winchester? What must be done?
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