BEST POWDER FOR 243 WIN and 105 VLD

[trailrider121]

I just load test some 105 hybrids, Lapua case, Wolf LR primer, and Retumbo in my 25" barreled 243 win. The 105's seat deep for magazine fit. Found a node around 47.7-48.5 grs. Yes it was slight compressed but not bad. Speeds were around 3060 fps and groups were good .4 - .7's.

Going to try H1000 or Ramshot Hunter next for accuracy is better.

 

[DoneNOut]

I'll post what I tried recently H100V with 105 Amax:

Gun: Rem 783 26"
Case: WIN
Primer: WLR
Powder: H100V
5 shot MV: 41gr @2947fps, 41.5gr @2982fps, 42gr @3045fps, 42.5gr @3077fps
COAL: 2.745"
Temp: 0 F.
ELE: 750 FT ABSL

Notes: I settled on the 41gr load since it had an SD of 9fps and a consistent .4" group. 42.5gr load was just as accurate, but started getting pressure signs at 0F. I knew it would be overpressure at warmer temps.

Currently loading Peterson Brass @ 60 F. The case capacity of Peterson is 2.5gr H20 less than WIN. 39gr and 39.3gr showing promise, 39.5gr I heard what I refer to as the boom/crack, not just a boom. Recoil was noticeably more on 39.5gr, so I think that's my limit with these cases and H100V. I'll get them on the chrono win the rain stops.

 

[300 Driver]

I use R26 in my 243. Love the velocity bump and shoots great for me.