slugged my mosin for reloading

[sixoclockhold]

So... Still use the 308s?

I would look into these with an experienced hand loader and have your rifle inspected to make sure it can handle the load.

http://www.hornady.com/store/303-Cal-.3105-174-gr-FMJ-BT/

http://www.midwayusa.com/product/282179?cm_vc=S014

You will need some help with powder selection and amounts as these are British 303 bullets, since your having difficulty measuring the slug.

PPU, Win and S&B all make 7.62x54r non steel rounds for ranges.

This stuff is dangerous, there are pressure limits yada yada. You don't just make a bullet willy nilly and become a marksman.

[Flyin Brian]

"Lee 7.62X54 Russian Pacesetter 3-Die Set includes Full Length Sizing Die, Bullet Seating Die, Factory Crimp Die, Universal Shell Holder, Powder Dipper and Instructions/Load Data. This die set includes a .308 expander."

If you are planning to buy the Lee dies to load 7.62X54r, I would suggest getting this expander at the same time:

https://fsreloading.com/lee-ez-x-exp-303-b-se2358.html

As you noted, the die set includes the .308 expander, so by buying the .311 expander you have it all covered so you can try .308 bullets and switch to .311 when needed.

The expander sizes are actually .001" under what they say on the package, so that gives you .001" neck tension to hold the bullet in the neck. I have 3 FL resizing dies - each with a different sized expander so I can load .308, .310 and .311 bullets. I color coded the dies so I know by sight which one is in the press. To get the .309 (for .310 bullets) I turned down a .311 expander in my lathe with some sandpaper and polished with fine crocus cloth.

H4895 and Varget work great for 7.62X54r, BTW.

[arslin]

went to data.hodgdon.com.

So I will research more (buy books etc) , but I leaning toward going with a 150 grain .308 Spitzer Boat Tail bullet. starting with 46gr of H4895.

primers are primers... it does not matter what primer i use... right?

[arslin]

One other question. I see max an min... I understand why you would not want to go over the max, but what are you looking for when you move your load up or down? what makes you push the grains up?

[mosinnagantm9130]

but what are you looking for when you move your load up or down? what makes you push the grains up?

You've got to tinker with the loading for a rifle to see what shoots the best out of that particular rifle.

[sixoclockhold]

One other question. I see max an min... I understand why you would not want to go over the max, but what are you looking for when you move your load up or down? what makes you push the grains up?

Primers are primers, you won't notice a difference unless your a competition bench shooter and a 91/30 doesn't qualify.

Every gun is different as will be how they perform with bullets and powder loads. Chances are slim that the highest load will give you the "best" accuracy. Although that is good to know especially if your going to shoot very long range, pump it up to the best you can with decent accuracy.

You probably won't notice much difference until you change your load by 1 grain and even then you may not notice much using a quality bullet. But probably .5 grain moves would be cool. It will show up on the crony by fps. When you get into copper plated, lead and hard cast bullets they tend to move more based on differences in load factors.

In some plated .30-.30 plinkers I am working on, I used 1 grain increments. Slower was better, but I like bang ! So I opted for the highest fps with accuracy. which still gave be booom.
28-30 grain junk
27 grain gave me 3 "
26 grain was junk
25 grain she tightened again to 3"

weird kinda but that is how it worked in my lever gun..I dump 27 grains in

[sixoclockhold]

A 10 mph cross wind is going to move your bullet a lot. U tube the formula

I think its like 7.5 inches at 300 yards...don't quote me on that.

[ElvenSoul]

I will add I have fired .308 out of .312 barrel they did ok.

[berg]

You also need to consider how far in the case you seat the bullet as that will have an effect on your accuracy.

It sounds like you are very new to reloading. It's actually a fairly dangerous activity so please read as much as you can before getting to work. People have been seriously injured or killed by shooting bad reloads.

On primers, if you end up using "milspec" or "hard" primers like CCI #34 you have to understand those are MAGNUM primers and you will need to adjust your loads accordingly.

[arslin]

You also need to consider how far in the case you seat the bullet as that will have an effect on your accuracy.

It sounds like you are very new to reloading. It's actually a fairly dangerous activity so please read as much as you can before getting to work. People have been seriously injured or killed by shooting bad reloads.

On primers, if you end up using "milspec" or "hard" primers like CCI #34 you have to understand those are MAGNUM primers and you will need to adjust your loads accordingly.

I will take this into note, and make sure to be very careful. I will start with just 20 rounds, likely spend hours on the first few loads.

It will be some time before I start. I do not get much range time, and I have a box of Winchester that I need o shoot first.

[WALDSCHRAT]

It was a big five special about 9 months ago.

That cancels out it being a Finn. What did you use to drive the slug through?

[arslin]

I followed this tutorial.

http://7.62x54r.net/MosinID/MosinSlug.htm

[arslin]

That cancels out it being a Finn. What did you use to drive the slug through?

It is a 1942 izzy. it was easy to identify. Some of the other stamps are hard to read, but the giant 1942 izzy is very clear.

[Vlad 11]

It is a 1942 izzy. it was easy to identify. Some of the other stamps are hard to read, but the giant 1942 izzy is very clear.

Hmm, I have never seen a 1942 Izzy. I have seen 1987 Izzy tho ..

[arslin]

If it is indeed a .310 groove i wouldn't send .312's down it. So go ahead try some .308's. Be advised that the die you use will need to have a .308 expander ball

So I am going to be out at the South Bay Rod & Gun Club clearing out some Winchester brass. Anyone out there this Sunday, let me know... I would be the tall goofy looking guy.

Hornady makes a 303 (.3105) 174 grain FMJ boat tail (#3131).

might that be good bullet?

edit: thinking about the .3105 is only .0005 smaller than a .311. likely still not a good option.