In a previous thread I was in the middle of getting into reloading. Fast forward, purchased a single stage press with dies and etc, etc, etc. Been reading my Lyman 49th edition front to back and then back to front. Started looking at powders, cases, primers, etc. I read and found load data for each caliber that I could start with. Started to backup and look at projectiles first for the twist rates of my barrels. Looking for some place to start and then experiment from there. Some specs below.
308 and 7mm08 twist rate 1 in 11
300 win mag twist rate 1 in 10

Rounds will be for hunting starting out.

Ok , so where to start, projectiles first?
100 to 500 yards.

Have been shooting Remmington core locket pointed soft point pretty well for many many years.
140 grain in 7mm08
150 grain in 300 win mag and 308

Ok, now suggestions, brand and grain in projectiles for barrel twists?
Powder mfg and #?
Primers?
All based on availability in this day and time.

Charts showing projectile grain for twist rates per caliber?


Have a few brass to test loads in first but will need to purchase more in the future.

This is not just reloading some ammo for myself, I really want to learn for myself what effects what, when changes are made with powders, loads and projectiles what can I expect.
I know it will take time and effort and close attention to detail but Jan to Aug I get pretty bored.

Not asking for a lot right? LOL

Just off the top of my head I load 47 grains of H 414 with A 140 grain Nosler BT.

I'd say don't select your bullets based on twist rates, select them to be suitable for the game you're after.

fixed it

Use the appropriate bullet weight for your twist rate.

Look here;

http://www.shilen.com/calibersAndTwists.html

And here;

http://www.riflebarrels.com/products/caliber_twist_rates.htm


Varget is the powder of choice for 7mm-08 and 308 Win. I have no recommendation for 300 Win Mag.

+1 Varget for 308

IMR 4350 is a good one for 7mm-08 w/140 grain bullets as well.

Select your bullet WEIGHT based on barrel twist, then select the bullet for the game you are hunting.

Weight of the bullet needs to be replaced with the length. That being said 140 gr Accubonds is where I would start with on the 7mm and 165 on the 308.

Well I went to Cabellas today, slim pickens on powder for sure. Going to start with my 300 win mag first. Picked up some IMR 4831, 180 Nosler Accubond Spitzer boat tail, Remington Large magnum 9 1/2 primers. Using Lyman 49 edition manual and will see what happens.

Edit-Ok, did I just mess up, I bought magnum primers should that have been just large rifle primers? I thought since it was a magnum it needed to be magnum primers.

Yes, you want magnum primers for a 300 Win Mag.

Length of projectile, rate of twist and anticipated muzzle velocity all are in the equation when choosing a projectile. friend had a .308 w 1 in 12 twist. It wouldn't shoot 165 or longer but handled shorter 130 and 150 gr (shot at higher velocities) very well
TC

To further clarify: not because the cartridge has "magnum" in its name. Magnum primers are nothing special, just a little hotter than standard rifle primers. Use magnum primers for large charges of difficult-to-ignite powders. But really, you could probably get by with standard primers in the .300 Win Mag. If you were loading .30-378, magnum primers would definitely be the way to go.

When we talk about bullet length think in calibers or bore diameter. 2.1 x .308 and 2.1 x .243 would work the same at a given MV and rate of twist.

With the powders and primers of the day Roy Weatherby decided against the 30-378, inconsistent ignition in cold weather being the reason. the Federal 215M got them thinking about it again, but the delayed introduction of the round for several more ears before introducing it to the world. Or that is something I remember from an article after the 30-378 was introduced.

He asked for the time, not to build him a watch.

What's wrong with a little interesting history? I did not know that and am glad to have been informed.

Only use Magnum primers "if the manual calls for them".....Misusage can create a dangerous over pressure situation.

Don't want to step on any toes from those who've experimented, but the manuals provide details that have been tested. Primers, standard and magnum by different manufacturers, have different characteristics.

dead on, just ask any barrel makers

Ya know, when you say "7mm-08" you're saying "deer rifle." I think it follows that you're going to be choosing a bullet anywhere from a Speer 130-grain to a Hornady 154 or maybe even a 160-grain. I really, really seriously doubt that you'll be able to pick the best bullet based on the twist rate, whether you go by the bullet's length or its weight.

If you're going to custom build a rifle it's a good idea to have a plan as to what the rifle's for and what bullet weight range you want to use. But when I buy a .270, I expect to be able to shoot anything from 110-grain to 150-grain well enough. It might like Nosler 130s and Sierra 150s the best, and hate Hornady 130s and Speer 150s. Just gotta try 'em and see.

So, when you have a deer rifle, it's going to be barreled to shoot a deer bullet. A 7mm-08 is a deer gun. Selecting the bullet does not require an in-depth analysis of the twist rate. Select a good 7mm deer bullet and go to work. Of that doesn't work out try another. It's not alchemy or rocket science.

Can't go with you on that.

I built my 7 Rem Mag to run 180 gr Berger VLD Hunting bullets. It had twenty 175 SMKs to foul it, then all it has seen is the Bergers. When my 22-250 needed a new barrel, I wanted to run 75 gr A-maxes, I ordered a .224 cal. 1:8" twist to run THAT bullet. That is the only bullet it has ever had run through it. Bullet weight must correlate with twist rate.

Whatever. What you're not hearing is that for typical bullets suitable for typical deer caliber a, typical rates of twist are fine. You are not talking about typical hunting bullets. Not everyone wants to hunt with a short action Savage or Remington in a Manners stock shooting VLD/target bullets.

If you are comparing target, tactical, & hunting weapons you have gumbo. Some are cross overs but not the same. I shoot deer from a mechanical rest on a bench or bagged in a blind with my TRG at about 15 lbs and super accurate. If hunting my LH .308 Remington or Mark V Weatherby 300 is a better choice and ea is more particular to load for but lighter and easier to use hunting.

The problem for the op will be the fact that his 7mm twist is extremely slow and likely won't stabilize a bullet that is very long. Due to this is choices in bullets won't likely be real wide knowing this can save a ton of headache by knowing what general area to start. There are several factors that go into bullet stability like altitude, velocity and temperature that can affect some very little or push a barely stabilized bullet over the edge. If the op wants to shoot heavier bullets I would look for a bullet with a flat base to try first. Another thing to take into consideration is if you want to shoot mono or solid construction bullets most are a bit longer than there actual weight is.

You're right, dee. I overlooked the 11 twist which is slower than the standard 9 twist and that should definitely eliminate a number of choices right off the bat.