Re: Need advise please
For distances out to 300yd, match and varmint, I like the Nosler Ballistic tips, both 50 and 55gr. My rifle is a 700VLS .223 with a 1:12" barrel, so heavier than 55 is not indicated.
For the 50gr try in the 26-27.5gr range of W748, and for the 55 try in the 25-26gr range with W748.
The upper ends of these charge weight ranges are skirting with max loads, so start low, work up, and pay attention to pressure indicators; each barrel generates pressures according to it's own unique personality.
I find that with the recent shortages, I got just as good accuracy with CCI-400's as I did with BR-4's.
My experience with 24" 1:9" Savage barrels indicates that the lighter weight bullets from my loads worked as well for the faster twist as they did for the slower ones. The heavy load was 75gr HDY BTHP Match (Moly) and 26.5gr of Ramshot Big Game. This is a conmpressed load and runs well under 1/2MOA with due diligence behind the rifle. It may not do so well as a varmint killer, and I never confirmed whether it had enough velocity for 1Kyd, but for paper and 200-300yd, and probably well beyond, it's the 'E' ticket.
Greg