Originally Posted by 82bluestang
I have a ruger m77 sporter contour and it is 24" long with a 1-9 twist
It will be used for varmint and punching paper. Maybe a deer or 2 when I get comfortable with it. A couple of friends of mine shoot 600-1000 yds and was wanting to use this rifle to get started. I have a redding powder scale and a rcbs powder trickled a modified 243 case with an angled gauge. I still need to get a set of bushings to check my oal with a dial caliper.
Hi Matt, sounds like you are off to a good start.
Your twist rate will suit the heavier end of the scale so those proj should go well.
The thing with powders are that you may need to try a few before you get the right one. Powders work directly with the bullet weight you are intending, E.G. generaly speaking(also depends on barrel lenght!) faster powders work better with lighter proj & slower powders with heavier proj.
So Your rifle may like the H4350 with those weight proj but then again it might like Varget better. Its all about the testing!!
Its all about doing your case prep consistantly as well so you are removing all the variables so you can hone in on how that particular powder works with the harmonics of your rifle.
Anyway trying one powder at a time is the best way to go.
Sounds like you are using the Hornady OAL gauge, great bit of gear IMO. Just make sure you measure your OAL at least 5 times then add them together & divide by five to get the average then take the 5thou or 10 thou off that accordingly.
So some other gear that IMO is essential for case prep is-
Flash hole deburer.
Primer pocket reamer
VLD chamfering tool(if you go with the VDL'S) this helps seat easier & wont scratch the sides of the proj).
I have also bought the Hornady anvil & base for the calipers, it makes life so much easier when measuring!!
If you are neck sizing then Hornady headspace bushings as well.
Here is a link that may help you with the VLD'S-
Berger Tips for Loading VLD Bullets « Daily Bulletin
Good luck & enjoy the ride.