M14 Forum

Glock10mm

Hi: I am specifically looking for loads the 155 gr Lapua Scenar and either N135 or N530 powder. I will be utilizing LC brass and cci 34 primers. I am not trying to reinvent the wheel here as i realize that 4895 is the standard for the 7.62 in the M1A. I have had excellent results using VV powders in both 9 and 10mm and am trying to gain the same low flash/extreamly clean burning caracteristics along with the uniform metering properities in a load for the 7.62. Both of these powders most closley match 4895 in Lapua's burn rate chart. Problem is both of these powders have been released since the most currently available manuals have been published, therefore they are not sufficently covered. I am an experienced reloader with the equipment required to produce ammo equal too or better than factory ammo(Dillon 550B/RCBS Rockchucker etc etc). I am most concerned with achieving a pressure curve equal to 4895 without mechanically stressing the M1A. Any and all inputs will be greatly appreciated. Thans in advance for your time and consideration.

ripper51

http://www.vihtavuori-lapua.com/download.asp
Go here. Gives the recommended loads.

Hml

Hi!

Maybe a bit late...

I live in Norway, where Vv powder is very common. And I reload for my SA m1a scout !!!

I have used Vv N140 for about 5 years. According to the burn-rate.chart in an Norwegian published reloading-manual (LADEBOKEN #6) Vv140 is a bit faster burning than 4895, and should be healthy for m1a/m14. Zero problems for about 2000 rounds. Vv N150 should be slightly faster than 4895 according to the same chart.

Most used load:

42-43gr Vv N140, Sierra MK 168 gr, COAL 71mm (2,796 inch)

charlesPOSTLEwade

1 suggestion do not use CCI #34 PRIMERS . I used them too and Started to experience over pressure problems and I was No Where Near Maximum Charge. I went with Hornady Suggested WLRP

JBS

See if this helps

Note: just noticed this was a dug up old thread.

Attached Images

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bigbang

I use 43 gr of N135 behind 147 FMJ. It gives good results and stays below max pressure.
Wolf

TheTinMan

The velocities I got with VV N-135 out of an 18" barrel were considerably faster than either the VV data or my Hornady book. RAMMAC ran my data through QuickLoad and it indicated potentially excessive pressure. Just the other day I was looking up something else and noticed that the latest version of the VV load data online specifically says that N-135 is good for .308 Winchester with bullets under 155 grains. (it's in the introduction where each powder is discussed.)

After more research, it appears that N-140 would be a much better choice for our rifles in terms of burn rate and pressure curve. N-150 for heaviest bullets.

I'm going to burn up the N-135 in an AR-15 instead.

bigbang

It says 155gr, not 55 gr. Thats exactly what I needed. I am limited to FMJ bullets by range rules and to 3 canisters by storage rules. I take N135 for .308 ( very good performance in short barrels) and in 223. In the burning rate chart its listed slower than IMR 4895.
Wolf

TheTinMan

Thank you for correcting me!

A 55 grain bullet in an M14 might be interesting, but not in a good way.

RAMMAC

The old Remington Accelerator round used a .223 caliber 55gr bullet inside a sabot. It would get up to about 4000 fps in the M14 style rifle. The modern military version is a SLAP round.

The old rumor mill claimed that the Accelerator rounds weren't accurate...bull. I used to use them once in a while and I could keep a four inch group at 100 yards. They weren't much good past that range because they were just too fast and they tended to either fly apart or explode on contact with anything. I a couple of rabbits with them but quit doing that after vaporizing a cotton tail. There was nothing left except part of one hind leg. I cut a tree down with those rounds. It was about four inches in diameter and it took like 10 rounds but it literally cut the tree in half.

You can't buy the assembled rounds but a year or two ago I found that you can still find the componenants and assemble them yourself.

John Coleman

Vihtavuori does not recommend their N-500 / N-5xx (i.e. N-530 / N-540/N-560) powders for use in gas operated rifles. Sako uses VV N-140 in all of their 308 Winchester loads. Vihtavuori recommends VV N-135 for the lighter weight bullets (150 - 155 grains) and VV N-140 for the heavier bullets. Note that the maximum Vihtavuori loads listed are very hot. Too hot for the M1A. Sako did used to publish their factory load data they might still. It was in the back of the Sako catalog with the ammunition. Those loads are fairly hot and full power but are not as hot as the maximum Vihtavuori loads. Do not use the load data from Vihtavuori, or least do not use near maximum loads. Sierra and Hornady have reasonable loads in their load data. Hornady fvors the faster VV N-135 powder while Sierra favors the slower VV N-150, which may be too slow for the M1A. Sako's choice of VV N-140 is very good, just stay away from Vihtavuori's load data.