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Advice on tested loads , .223 , .303 , 7.7

Posted: Mon Dec 27, 2021 4:31 pm
by dirtbag
Hi all ,

I have been testing some of my handloads for my various toys and wanted some advice if possible please ?
Since making the transition over to vit powders (mainly N140) I have been looking at sierra manual and vit load data website I have been making up some loads, which I can confirm that I have measured using equipment.

My question (aim) is to shoot out to 600 yards, so just wondering if the recorded averages are sufficient for that distance?
Accuracy at 100 yards for all (with me shooting) I was happy with. The good thing was for the two iron sighted rifles I pretty much have a mechanical 100 yard zero with Ross peep at the bottom, and the Type 99 ladder notch at bottom too.
Conscious of the forum rules (which I hope I have followed?) I'll add the references below:

1)
Rifle : Sabre Defense XR15 .223 1:9 (My Vietnam era M16 clone thingy with 3x20 colt scope)
Bullet : 69gr Sierra Matchking HPBT
Powder : N140 (Tested loads within stated parameters) https://www.vihtavuori.com/reloading-da ... artridge=7 (.223)
Results : Averaged around 2678 FPS

2)
Rifle : MK III Ross .303
Bullet :.311 174gr Sierra Matchking HPBT
Powder : N140 (Tested loads within stated parameters) https://www.vihtavuori.com/reloading-da ... rtridge=28 (.303)
Results : Averaged around 2304 FPS

3)
Rifle : Arisaka Type 99
Bullet :311 174gr Sierra Matchking HPBT
Powder : N140 ( Loads kept light based on forum posts on previous full-bore post on Type 99 same powder and bullet , would welcome references)
Results : Averaged around 2183 FPS

Thanks in advance, and apologies if I have mis-posted in any way.

Re: Advice on tested loads , .223 , .303 , 7.7

Posted: Mon Dec 27, 2021 6:19 pm
by Sim G
The .223 with 69gn bullets and N140 has an almost industry standard of 25.0gns. 600yds easy.

Re: Advice on tested loads , .223 , .303 , 7.7

Posted: Mon Dec 27, 2021 6:27 pm
by dirtbag
Sim G wrote: Mon Dec 27, 2021 6:19 pm The .223 with 69gn bullets and N140 has an almost industry standard of 25.0gns. 600yds easy.
Hi there, thanks so much for replying. Much appreciated.