Help with 300 win mag loads tikka t3 lite

[Submoa_hunter]

My current setup is a 180 gr nosler accubond and 64grains of h4350 powder. Im getting the accuracy i want but when im shooting 400 yards plus the bullet drops alot more than i want and what the book says. Ive tryed loading it hotter but it seems like when i do that i get groups over 1 inch and thats not acceptable to my standards. I like to keep it under .5 moa at 100 yards

[Rayzor]

Originally Posted by Submoa_hunter

My current setup is a 180 gr nosler accubond and 64grains of h4350 powder. Im getting the accuracy i want but when im shooting 400 yards plus the bullet drops alot more than i want and what the book says. Ive tryed loading it hotter but it seems like when i do that i get groups over 1 inch and thats not acceptable to my standards. I like to keep it under .5 moa at 100 yards

I've been loading for my 300 win mag for years and i use 71 grains of IMR 4350 for many of the different leads I've tried including the accubond. My rifle is very accurate with this combination. I can put together 3 shot groups at 100 yards in under one inch consistently. I set it at about 1 1/4" high at 100 yds, it is still above zero at 200, about minus 4 at 300 and about minus 17 at 400. I hold the top of the thick portion of the duplex reticle on target at 400 yards and that puts my shots in the money zone. I have managed 400 yard groups of under 5 inches with this setup. 64 grains in a win mag seems a little anemic, try cranking it up and play with your freebore setting to see if you can improve your groups. I've got a Tikka T3 and a Sako A7 in 270 WSM and those two rifles give me 3 shot-3" groups at 400 yards. I am very impressed those those rifles.

[HunterDave]

Originally Posted by Submoa_hunter

My current setup is a 180 gr nosler accubond and 64grains of h4350 powder.

Re-check your data for that bullet/powder/caliber.........my manual it telling me that your loads should be higher than 64 grn.

[Robmcleod82]

Try 190 grain Berger vlds abOut 10 thou off the lands with 80-81 grains of h1000. If your shooting past 400 yards check your groups at 300 or 400 and see what they are doing

[tchardy1972]

Just for info purposes nosler book starts at 66gr of imr 4350 and goes to 70gr with a 180gr bullet. 70gr is about 3130fps out of a 24" bbl

[HunterDave]

Originally Posted by tchardy1972

Just for info purposes nosler book starts at 66gr of imr 4350 and goes to 70gr with a 180gr bullet. 70gr is about 3130fps out of a 24" bbl

That's what I was getting at.....lol. I was wondering how he ended up with 64 grn.

[flint guy]

Im using 72.2 of rl 22 behind a 180 accubond and federal mag primers. HAvent chrony'd it yet though. 400m zero is 8.8 high at 100m If I remember right

[Submoa_hunter]

Ya i didnt know how i was using so little powder i will check other reloading manuels to see what they say. I was using hornadys 7th edition handloading book just so you guys know

[nitro-express]

It's been my experience that there are lots of variables with the 300 Win Mag. Leade can and does vary and sometimes the leade is more like Weatherby freebore. There are also lots of chamber variations. That makes for lots of differences in data.

A Chronograph is a very good tool, helps to find a load that gives accuracy and velocity. Your light load is accurate and groups open up with increases. Before I'd switch powders I would select a different bullet and try those at increased velocity. I load 180 gr Speer BTSP with 69 grains of H4350, a Magnum primer and an OAL of 3.415. Although Speer #12 lists 71 as max, 69 has a PRE the same as a factory round or 0.0005 more in my rifle.

If your rifles magazine is only 3.340 or only slightly longer, getting the bullet close to the lands is not an option. This is not really as big an issue as it first appears, it just means you must handload differently. Load hot (max design pressure) and let the bullet jump. Just like loading for Weatherby. If accuracy drops off after lots of shooting, increase the powder.

If you have the same problems with other 180's, (Nosler BT bullets are accurate but the Accubond has always been a disappointment for me) and you cannot get the bullet close to the lands because of a short magazine I have one suggestion. Use a 165 Sierra HPBT, it will get you closer to the lands than any other bullet I know of. I don't have any powder suggestions, but IMR 4831 may be a good place to start. Don't let the looks of the bullet put you off, it is one tough bullet, opens slowly,penetrates well and it is accurate.

Sierra list this Hunting Load: IMR-4831 74.9 gr for 3200 fps @ 3752 ft lbs of energy. They list 76.9 as a max load.

[bulletman]

We use 74.75 grains of Reloader 22 with a 180 grain bullet. This gives us factory spec speed. Hornady Interlock or Nosler Accubond.

[Robmcleod82]

At 64 grains you are going to be on a lower node probably around 2700 ish fps. I believe the next node is going to be somewhere around 3050 fps. Try pushing them faster.

[dero338]

you say your bullet trajectory dont match software trajectory

what bc are you using

I use 200gr accubound and H1000 in mine(savage111) and with JBM, the bullet is dead on

[H380]

I've had good luck with IMR 4350 when loading for my T3 in 300wm . Been using 69 gr . with 165 and 180 gr SST's and 67 gr for 150's .. all shoot under 1 MOA a 100 yds ,. Used 72 gr. of IMR 4350 with some 110 gr Vmax and tho groups were good at 100 on paper the resulting vapor trail and splash on gong was not acceptable . Cowboy clay did get a kick out of watching the trails .

[6mmhunter]

I'm getting tremendous accuracy with 180 gr Nosler Accubond, 73.8 gr RL-22. Usually one ragged hole for a 5 shot group (provided I'm doing my thing. haha)

[Hotwheels81]

Originally Posted by Submoa_hunter

My current setup is a 180 gr nosler accubond and 64grains of h4350 powder. Im getting the accuracy i want but when im shooting 400 yards plus the bullet drops alot more than i want and what the book says. Ive tryed loading it hotter but it seems like when i do that i get groups over 1 inch and thats not acceptable to my standards. I like to keep it under .5 moa at 100 yards

Push it faster.

I'd jump up 2 full grains and start working up from there in .3gr intervals till you either hit the next node or start getting sticky extraction... The general consensus online it the 300WM likes to run near peak pressure and from what I have seen and done first hand supports that for the most part....

If your not dead set on H4350 try RL22 or H1000... I have had excellent results with RL22 in the 180gr ballpark then any other powder... Above that weight H1000 has done very well with 210gr bergers for me...