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Picture of Alamo308
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Maybe I'm making an issue out of nothing, but just looking for suggestions anyway.
Shooting a Finnish M28-76, bedded 1940 SK.Y barrel, original aperture sights.
So far have shot only "JMS 02" ammo 7.62x54R 170gr FMJ-BT which is Boxer primed and really nice brass, so I consider it a good candidate for reloading.
I want to use SMK-HPBT 175gr .308 projectiles, but do I use 7.62x54 reloading data or .308?
Don't flame me TOO bad, cuz I'm just a newbie here and will appreciate your kind words.
 
Posts: 17 | Location: Texas | Registered: 07 August 2015Reply With Quote
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Picture of dpcd
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Do not use reloading data from another cartridge for something completely different. In some cases you will be fine and in others, you will not be.
You use the data for the cartridge you are loading. In this case it would be ok because the 308 has a smaller case capacity and uses less powder, but don't do it anyway; bad habit. If you want to start with lower loads, then use the 7.62 data and start low and work up; that is standard practice.
Interpolating data from other cartridges is not for those just starting out.
I don't know what flaming is; I only use facts, data, and actual experience.
 
Posts: 17189 | Location: USA | Registered: 02 August 2009Reply With Quote
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quote:
Originally posted by dpcd:
Do not use reloading data from another cartridge for something completely different. In some cases you will be fine and in others, you will not be.
You use the data for the cartridge you are loading. In this case it would be ok because the 308 has a smaller case capacity and uses less powder, but don't do it anyway; bad habit. If you want to start with lower loads, then use the 7.62 data and start low and work up; that is standard practice.
Interpolating data from other cartridges is not for those just starting out.
I don't know what flaming is; I only use facts, data, and actual experience.

Thank you, dpcd.
Wow - that makes so much sense. I will do exactly that. I guess if I'd done a little critical thinking I might have been able to figure that out, too, given enough time and a clearer head? Just needed a nudge in the right direction, which you very succinctly provided.
See, this is why I'm on here.
Thanks again!
 
Posts: 17 | Location: Texas | Registered: 07 August 2015Reply With Quote
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You are very welcome; one other thing you have to consider is the strength of rifles being used; but again, odds are in your favor since the 91-30 is very difficult to blow up.
 
Posts: 17189 | Location: USA | Registered: 02 August 2009Reply With Quote
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Picture of Mike_Dettorre
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Alamo 308,

The Hodgdon website has data for using .308 bullets in the 7,62x54r case. They don't have 175 grn but they do have 180 grain So you can use 180 data for the 175.

As always start low and work up.


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.
 
Posts: 10097 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
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Simo Häyhä "White death" 500 confirmed kills with his kivaari + about 200 with his smg.

https://www.thefirearmblog.com...-painted-on-a-truck/
 
Posts: 3611 | Location: Sweden | Registered: 02 May 2009Reply With Quote
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