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I took possession of a M-70 donor I'm considering for the .350, a Stainless 7mm WSM. The OAL of the .350 round is 2.800, according to the Nosler manual. The mag box in the M-70 is 3.040. So, I assume I can have the smith set the chamber for a maximum OAL of 3.000 or so for the .350 Rem. My question is this. Is there a major advantage to doing so, and if so, what can I expect to gain? Disadvantages? Input is appreciated. Thanks fellas. Doug | ||
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I dunno if the chamber on the wsm is large enough but you might the to short stroke a few 350 mag cases into the barrel to see if it will feed. Im not sure about it but it bet the feed rails are opened up for the wsm case. if you can do it i'd have the smith chamber it then ream the throat deeper to allow you to seat heavy bullets out further in your cases. I shoot the 7mm wsm and like it. I also just ordered a 350 rem mag model 7 cdl. I wish it was a winchester featherweight instead. | |||
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I is my understanding that mag box and free bore which determines the ability to seat long bullets or a bullet long are two different things. I also heard that the standard minimum for freebore is on bullet diameter but this depends on cartridge pressure. For example my factory Win Mod 70 in 375 H&H had so much freebore that even if I seated 300 grn barnes solids 50/1000 of the lands which is the barnes recoomendation they would not fit in the mag box. Not even close. My basic point is that I suspect the standard approach for freebore on a 350 Rem Mag will be ample enough for your 3.04 mag box. Mike Legistine actu quod scripsi? 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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The Ruger 350RemMag's are built on the WSM actions ... so getting it to feed wont be a major drama. There are some heavier (250gr+) 35cal projectiles that wont work in the 350RemMag as the cannelures are positioned too far back giving a too long COL when seated. A magazine box of 3.040" is a blessing in disguise. Cheers... Con | |||
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You gain the ability to use heavier bullets with a long chambered 350 without eating up case capicity. That was always the downfall to the 350 you had such low velocity with heavy bullets it is a short range cartridge. There should be no problem with the action your useing. I have one of the ruger 350 mags. Ruger used a stock WSM receiver for the 350 and it works just fine. They also chambered them a little long so I can go 2.900 for oal. Which is nice but more would be better. I would really like to try the Nosler Accubond but don't think I could seat them long enough to get enough powder capcity for the speed I want. But I would think with 3.000 and the right powder you would have a hell of longrange thumper. I would figure you could get upper 35 whelen velocities to low 358 Norma Mag velocities in a short action with some careful experimenting. | |||
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There were some posts, not sure if it was AR, or another forum, guys built same gun 350 on WSM Win 70 action, and worked fine, I would chamber/throat for all OAL it can handle, adds flexibility, my 338-06 was throated for 250's, and my 200 and 225 shot GREAT, all of them, and I think it gave me a little bonus in capacity and velocity with no downside. | |||
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Just an FYI, you do not need to seat abullet at the cannelure. Mike Legistine actu quod scripsi? 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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nyrifleman I built a 350 Rem on a mauser 98 action with a long throat. With bullets up to 225 grs the 350 comes very close to the 358 Norma. With the heavier bullets the long throated 350 outperforms the std 2.80 " version by a mile . The 225 TSX is a great bullet for the long throated 350 Rem. | |||
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Just to clarify. No you don't need to seat at the cannelure, but there are some 35cal pills that seating infront of the cannelure to reduce COL means your into the ogive and the projectiles wont crimp nor remain in place if squeezed into the case with mild finger pressure. There are ways around this but it's a hassle buying projectiles to find they're compromised by having to be seated deep to remain in place. I've got a 35/300RUM in mind as a future project and have chosen a Brno602 for my donor action as I've corresponded with people that have had magazine box/COL issues with a 358STA and 35/338RUM based on Rem700 actions and their 3.65" boxes. Particularly with the Nosler 225grBT and I'm guessing the newer 225gr Accubond. If you don't want to compromise case capacity ... longer magazine boxes are a blessing. The 35/300WSM that was dubbed the 35Sambar was developed in Australia and used an M70 with its 3" box. It came with-in 100fps of the 358Norma. I planned on rechambering my 350RM Ruger ... but the 350RM is good enough as is  Cheers... Con PS nyrifleman: Be also sure to use a 1:12" barrel. That way you'll be able to use the 310gr Woodleigh soft and FMJ if you ever want to chase something disproportionately large | |||
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FYI the new accubond is exactly the same dimensions as the ballistic tip. | |||
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I use a cannelure tool on jacketed bullets with the poorly placed cannelures. Go to Corbin's bullet swaging website for one. He has lots of other goodies as well. Packy | |||
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