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FMJ at low velocity


wildrover77
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I load 308 in sub sonic. 1020fps. At 100 meters I group at 1 inch.

Bullets are ppu fmj 174grIn and loaded backwards. Reason is not to help part energy but to aid stabilisation. At low speeds you need a good tail on the bullet. Took me a long time to get it to shoot well, and loading is not easy to load. With a 150gn hunting load zeroes at 100 meters I get 16" drop with the subsonic loading.

 

I have shot rabbits with them and it smashes the pants of them. Not shot for yet but I would have no issues doing it as I know it put it down on the spotter.

 

Noise wise, its not that quite. There is a good crack from them when up against a wood but very usable.

 

Next one I want to do is the 6.5se

Edited by activeviii
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I load 308 in sub sonic. 1020fps. At 100 meters I group at 1 inch.

Bullets are ppu fmj 174grIn and loaded backwards. Reason is not to help part energy but to aid stabilisation. At low speeds you need a good tail on the bullet. Took me a long time to get it to shoot well, and loading is not easy to load. With a 150gn hunting load zeroes at 100 meters I get 16" drop with the subsonic loading.

 

I have shot rabbits with them and it smashes the pants of them. Not shot for yet but I would have no issues doing it as I know it put it down on the spotter.

 

Noise wise, its not that quite. There is a good crack from them when up against a wood but very usable.

 

Next one I want to do is the 6.5se

Nice one bud.

One foul night, a gale, I had promised my game dealer a load of rabbit. I adjusted the scope on my 308 and gave it to the rifleman instead of him using his 22.

We got a good haul, no windage issues and it was fun. Seeing the bullet illuminated by the lamp going was good.

It would be a faff to do that all the time but it was a good exercise all the same.

 

A dedicated rifle such as the op would be fun.

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The other "neat trick" about loading bullets backwards is quite an old one, but to has the most part been forgotten, unless you have read the right books

 

WW1, trenches. Lots of British casualties from German snipers. As time passes the British sniper comes into being & starts to answer back. The German snipers then adapt & start to shoot from behind specialist armoured steel loopholes made from bullet proof steel.

Here's where the expertise of some of the officers attached to or running the British sniper schools came into play. Rifle bullets were pulled, then seated base first, and loaded singly.

Went through the German armoured loopholes like the hammer of Thor...

 

Nice to see more great posts from UD, on a topic that he has a lot of knowledge & experience of....some other posts however, :oops:

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Thats some "bodge" loading set up you have there UD are they all seated to the same length ? :lol:

 

 

You clearly know what your doing UD :yes:

They shot well, in real world hunting distance.

The started at 180grn and where still around 175grn. They were loaded first then filed. The die holds them still.

Edited by Underdog
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Still don't see what efficiency has to do with it bud.

Where do you think the energy goes?

 

A pointed bullet is designed to penetrate easily by deflecting material around itself, I was wondering whether a pointed bullet head might deflect expanding gases more than a flat surface, even momentarily, causing a pressure spike.

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A pointed bullet is designed to penetrate easily by deflecting material around itself, I was wondering whether a pointed bullet head might deflect expanding gases more than a flat surface, even momentarily, causing a pressure spike.

deflect it where bud and how is that going to cause a pressure spike?

 

I have never had a case show any sign of excessive pressure from this practice.

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A pointed bullet is designed to penetrate easily by deflecting material around itself, I was wondering whether a pointed bullet head might deflect expanding gases more than a flat surface, even momentarily, causing a pressure spike.

So....loading the bullet point backwards allows propellant gas to flow PAST the bullet; even though said bullet is travelling down a rifle barrel & there is nowhere FOR the gas to flow to (apart from forwards) ?

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So....loading the bullet point backwards allows propellant gas to flow PAST the bullet; even though said bullet is travelling down a rifle barrel & there is nowhere FOR the gas to flow to (apart from forwards) ?

The propellant cannot flow PAST the bullet, only as far as where the taper ends. No different to a boat tail

Should have read the quote in the previous post before typing this reply. :rolleyes:

Edited by hambone
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The propellant cannot flow PAST the bullet, only as far as where the taper ends. No different to a boat tail

Should have read the quote in the previous post before typing this reply. :rolleyes:

& re-read my reply - which was in response to the sitsinhedges post

 

I WAS backing up the previous post - as HOW could the gas flow ANYWHERE aside from forwards??

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& re-read my reply - which was in response to the sitsinhedges post

 

I WAS backing up the previous post - as HOW could the gas flow ANYWHERE aside from forwards??

I replied to your post, then I thought it made no sense so I relooked at it and then edited my post to reflect the fact that I had misinterpreted your post. You have now looked at my post and commented on the fact that I commented on your post and got it wrong etc etc. I must point out however that the gas if failing to go FORWARDS could go backwards or indeed sidewards, not that I think putting a bullet into a cartridge pointy end first is likely to cause this. :lol:

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