6XC, Varget/H4350

[Frank Hull]

Not having a stockpile of H4350 led me to try Varget in my 28 5/8" 5R, medium Palma, bolt rifle. 35 gr of Varget landed within .25 MOA of 39 gr H4350 @ 600 yd with 115 new, coated DTACs. Both loads hammer x's. Short of torching the throat sooner, what's the downside?

 

[mikeinct]

Hi frank..I don't want to hi-jack your thread..But I would like to hear what others are doing for powder when they can't get their preferred loading..For a while we had to switch in slower burning powders..H 4350 was not available & i had to use Imr 4831..It worked in my 243 win w 105 grain bullets...Thanks Mike in Ct

 

[jr600yd]

If you can't get H-4350 try AA-4350. I've had good results in my 6XC.

 

[DTubb]

Not having a stockpile of H4350 led me to try Varget in my 28 5/8" 5R, medium Palma, bolt rifle. 35 gr of Varget landed within .25 MOA of 39 gr H4350 @ 600 yd with 115 new, coated DTACs. Both loads hammer x's. Short of torching the throat sooner, what's the downside?

Frank,
Our precision 6XC ammunition line is currently loading H4831 SC with a Russian primer. Current lot# of powder with velocity and pressure testing is allowing a 44.5 gr charge weight.
OAL of the cartridge is 2.775" with the coated DTAC 115 RBT.
Out of the 29.5" Schneider test barrel the velocity is 3175fps.

Dtubb

Had a friend over 2 days ago and out of his 25" (setback once) 8 twist 6XC the velocity was 2986fps average for 5 shots.

 

[Killick]

What David said. +1. (My go to load for accuracy is 40gr. in a 40" bbl., 3050fps, 105 Hyb.)

 

[jr600yd]

Guess David knows his stuff. I got more velocity with 4350 but better accuracy from H-4831.

 

[Frank Hull]

Being jr600yd got better accuracy from the slower H4831, I believe the barrel whip/harmonics was diminished by the gentler pressure curve. When I tried 39.6 of H4350 in my barrel the group opened up a bit, so 39.0 was my fastest and tightest load. Having an abundance of Varget and very good results from it in my 260 with a 142 SMK via 37.5 grains and the same basic case/capacity, I gave Varget a go. 35 grains of Varget in the 6XC landed within .25 MOA water line as 39 grains of H4350. Now the rub, The Varget grouped tighter, 10 x's vs. 9 x's with the H4350. One can only tell what a barrel is going to produce via testing and sometimes a lot of it. Now to get some H4831 SC and continue. Thanks guys.

 

[jr600yd]

Frank, H-4831 works great in the 260 also.