I have tried the Hornady 40gr V-Max and 40gr Nosler B-tip at 300 and 400 yards at the range on still days. I can't find anything wrong with these bullets but I have chosen to use the 39 gr Sierra because it claims the highest BC. I have not tested the BC to verify this. I have made the 32 gr bullets go fast. 29 gr of IMR 8208 will make 32 gr Sierras go more than 4300 in my 26 inch barrel. I have focused on the 40gr bullets because they are slightly more wind resistant.
Nice. I have several groups at .75" at 300 on calm days but with factory ammo. I hope the new loads will shoot as well, but hoping for better. We'll see. My 204 only has a 20 or 22 " barrel so I doubt I will see much increase in speed.
mine liked H335 with the 40g vmax. really the only thing that hasn't shot good for me is the 30 gr hornady factory stuff. it was screamin' fast, but wouldn't shoot less than about 1 3/4 at 100. i finally rounded up some 39g sbk bullets, but have kindly been waiting to see if i could find some remington primers before i load any of them up.
Why Remington primers? When I compared the mass of 50 of each of the CCI BR2, CCI 400, Fed 205M, Regular Fed 205, Russian Wolf and Remington small rifle primers, the Federals were the most uniform and Remington the worst. The CCI BRs were almost as good as the Federal Match Both "match" primers were measurably more consistent than the regular primers. In both cases the average mass was the same for regular and "match" primers. This tells me that the amount of priming mix, the "pellet" is the same for regular and match primers. I used a Laboratory Balance at a Biotech Lab that has its own room. Note that both Federal (Minesota) and CCI (Idaho) are owned by Blackhawk.
The bench rest boys use 205Ms, end of story.
It is hard to beat the Nosler brass. They are sorted and the outliers discarded. They also can be annealed. I use the Forster Shoulder Bump Neck Bushing Die.
I use the Wilson seating die that was cut with my chamber reamer.
the word over on the 204 forum is that the remington 7 1/2 is made with a thicker cup, and will show less overpressure signs than any of the others. it is pretty much accepted as the "only" primer for the 204 over there. i have always used fed primers, and have got the best groups with them on countless occasions, in many different cartridges. that being said, i have a box of winchester small rifles that i have been using for 223, and they are really "smashed" with very nominal loads in the 204. at the moment, i am finding NOTHING at any of my local haunts, and only found more winchesters at the last gun show, so i guess i am waiting it out, at the moment!
I will see if I can find some 7.5's and try them out. I don't recall what my Hornady book was using for primers but I have had good luck with Fed Match so that I was use. Not real scientific about it ha ha.
The only primer I had that was FLAT as the one with 33 grains of super. 32 seems fine. Hope to test some more tomorrow.