Other people's reloads

MD

MD

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I was at the range one time and had an old box of Imperial brand 300 Winchester ammo that someone had given me. The 180 gr. bullets had those plastic "Sabre tip" tips. I just assumed they were factory loads. The guy at the next bench mentioned to me when I was shooting them that I must be shooting handloads that were too hot from the recoil I was getting. I thought that's how 300 Winchesters behaved.

Anyway , today i was having a lcoser look at the box thinking I;d try them again, then noticed some hand loaiding data on the in side of the box lid.

73.09 grains of H4350

180 gr. CIL sabre tip bullets

CIL primers

Once fired brass.

Looking at the Hodgdon data on the 'net I see the maximum load is 67 grains.

My old metallic cartridge Reloading 2nd edition from the 1970s lists the maximum load as 71.5 grains.

I wonder why the discrepancy?
 
I too tried reloads meant for another gun in my .308 BLR one day at the range.....I couldn't extract the spent shell, so I thought I would let it cool for a few minutes.....no go. It took buddy on one end tapping on a cleaning rod and me at the other end gently pulling down on the lever to get that shell out. Lesson learned.....dumb move.....never again.....
 
MD said:
I was at the range one time and had an old box of Imperial brand 300 Winchester ammo that someone had given me. The 180 gr. bullets had those plastic "Sabre tip" tips. I just assumed they were factory loads. The guy at the next bench mentioned to me when I was shooting them that I must be shooting handloads that were too hot from the recoil I was getting. I thought that's how 300 Winchesters behaved.

Anyway , today i was having a lcoser look at the box thinking I;d try them again, then noticed some hand loaiding data on the in side of the box lid.

73.09 grains of H4350

180 gr. CIL sabre tip bullets

CIL primers

Once fired brass.

Looking at the Hodgdon data on the 'net I see the maximum load is 67 grains.

My old metallic cartridge Reloading 2nd edition from the 1970s lists the maximum load as 71.5 grains.

I wonder why the discrepancy?
Click to expand...

Yes. Lawyers usually trump engineers. The numbers keep getting lower and lower. I hate used book store type shopping, but I go in with my wife just to look for old reloading manuals. The odd time, one has turned up and I grab it. The older the better.

I see by your numbers, those cartridges are still over by a bit. I especially like how he measured to 1/100th of a grain. I know there are scales that will measure down that low, but they're not very common. Kind of makes you wonder.......
 
MD said:
Looking at the Hodgdon data on the 'net I see the maximum load is 67 grains.

My old metallic cartridge Reloading 2nd edition from the 1970s lists the maximum load as 71.5 grains.

I wonder why the discrepancy?
Click to expand...

At one time the 300Wm was factory rated at 3070fps with a 180gr bullet. I think that changed in 1972ish to 2960fps? Anyway, that might explain the difference in the reloading manual data.

And you know what? There is a real possibility that was a safe load in THE RIFLE IT WAS DEVELOPED FOR.

But maybe not yours......;)
 
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