30 sherman magnum

VLD Pilot

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Yep they have done lots of smith work for me over the years. Always great work. Plus they are only 1.5 hours from home.
Wasn't aware Pierce engineering built complete rifles either. I've had several chambered by John and purchased some Manners stocks from him while my barreled actions were in his shop during the chambering. I haven't had a barrel sent there since John retired. Sounds like his guys do great work regardless but I have a gunsmith 15 minutes from my home. If John didn't retire, I'd probably still be using him.
 

snox801

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Yep having me close is great. I’ve tried closer ones but they don’t seem to be able to do the quality of work. Heck even had one thread a brake on not inline with the barrel. Gla do caught it before I fired it. Butler would have hit one side of it.
 

elkaholic

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Thanks, ya I think it will shoot ok.
Just thinking with how good it shoots I’m gonna be disappointed when final load is done. Got to give a shout out to pierce engineering. Second rifle they have done for me and both have shot amazing. Plus they are about as easy to work with as you can get.
No worries, it will shoot the same!
 

stonehands1

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That looks like an efficient design Rich. Great work. My 300NmI 28" 10twist requires more powder for same speed. Im at sea level...may be some of it.
 

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VLD Pilot

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That looks like an efficient design Rich. Great work. My 300NmI 28" 10twist requires more powder for same speed. Im at sea level...may be some of it.
I'm gonna build that 30 Sherman Magnum soon. That said, the 300 NM certainly exceeds that velocity especially with the 215s. My buddy runs one and he's getting those numbers with 230s. Too me tho, it's not worth it. The 30 Sherman gives all the HP needed and accuracy is superb. Not knocking the NM because it rocks also but the 30 Sherman gets it done as good or better with less powder and less recoil with a standard Magnum bolt face. Sorry forgot he has the improved version of the 300 NM.
 

stonehands1

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I'm gonna build that 30 Sherman Magnum soon. That said, the 300 NM certainly exceeds that velocity especially with the 215s. My buddy runs one and he's getting those numbers with 230s. Too me tho, it's not worth it. The 30 Sherman gives all the HP needed and accuracy is superb. Not knocking the NM because it rocks also but the 30 Sherman gets it done as good or better with less powder and less recoil with a standard Magnum bolt face. Sorry forgot he has the improved version of the 300 NM.
Agreed. I have 2 nmi and now use 230s at 3200. It's stupid accurate and easy to load for.
I have a couple mag face actions I think I'll do in 30sm
 

VLD Pilot

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Agreed. I have 2 nmi and now use 230s at 3200. It's stupid accurate and easy to load for.
I have a couple mag face actions I think I'll do in 30sm
Excellent. The standard 30 SM is real close in performance to the 300NM. The 300 NM uses more powder and needs a specialized bolt. Certainly this Sherman cartridge makes good sense. Look forward to getting mine finished for some range work
 

snox801

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Not only does it need a bolt but it also has been known to have ignition issues on steep angle shots. Never heard any first hand stuff but I believe that issue has been talked about
 

moxford

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Regarding cheap fire-forming loads, what is everyone using instead of burning the "good stuff?" Ideally something in the 40-50 gr weight range, so would have to be pretty fast but bulky. Oh, and it needs to be available. :D

Cheers,
-mox
 

stonehands1

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Not only does it need a bolt but it also has been known to have ignition issues on steep angle shots. Never heard any first hand stuff but I believe that issue has been talked about
Have fired it at up to 30 degree angle with no issues. Have not heard of that one.
 

codyadams

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Have fired it at up to 30 degree angle with no issues. Have not heard of that one.
I have also never heard that either, I doubt a specific case would be more ikely than another to have that issue. Sounds more like people using standard rifle primers trying to ignite 85-95 grains of powder, or using way to fast of a powder and not getting appropriate case fill. Not saying it's not possible, just seems like there is a different, more likely cause than the specific case shape.
 

CA48

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I have also never heard that either, I doubt a specific case would be more ikely than another to have that issue. Sounds more like people using standard rifle primers trying to ignite 85-95 grains of powder, or using way to fast of a powder and not getting appropriate case fill. Not saying it's not possible, just seems like there is a different, more likely cause than the specific case shape.
Word on the street is when they tested the cartridge they used to fast of a powder and had a low case fill. Causing issues with the steeply inclined shots. Then that news hit the internet and now all of the sudden many think the 300 Norma is no good for heavily inclined shots but all the other 30 cals with almost identical capacity are 😂. Ive shot the 300 Norma Mag with full cases of retumbo at 1200 yards, inclined shots and it does just fine.
 

moxford

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Word on the street is when they tested the cartridge they used to fast of a powder and had a low case fill. Causing issues with the steeply inclined shots.

It's not the inclined but declined (downhill) shots that cause issues with low fill - the powder stacks against the bullet in the case and far away from the primer. With longer and fatter case it presents more of a problem especially if running a non-mag primer in colder weather.

Cheers,
-mox
 

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