Thread: New 223

So I finally got around to running some 63gr Serria Semi SP.

Using 2206H again;
30gr gave 3280fps
31gr gave 3422fps

Looking at the 22-250 data in ADI's book, I've got these running about 50fps less than their max for the 63gr(3485fps) and 220fps faster than a 223Rem(3200fps). I need to get a few more bullets and add another 0.5gr to hopefully get 3500fps.

I've been shooting it a bit, mainly at steel targets and rocks out to 750 yards with both the 53gr V-Max and the 60gr Partition. Shot a hare at 530 yards and hitting steel easily enough at greater distances. Must admit, have missed a couple of hares in close though(just because the target is closer, doesn't mean the brain shouldn't be as engaged as at 700 yards!!!).

Just loaded a heap of Partitions for a Wanganui road trip at the end of the month. Maybe a few goats, fallow and even a sika. Running the 270WSM for the Sambar might be a better option though.

I have just loaded some cases for the 11th time and they still are looking good. I haven't have a case fail other than a few during fireforming and the 2 that I over charged and had excessive pressure.

Still haven't run a light 40gr bullet yet, maybe due to the 53 Vmax flying very true and being cheap enough. I will try some just to complete the full range of bullets and log the velocities. 4000-4100fps would be nice, but not sure if i'll get that high with the narrow case. Would need to run BM2 or similar too I think.

In summary, a 22-250 isn't going to cut it really anymore. Maybe a 22-250AI would be worth it, but I can get 6 rounds in the magazine of the Maximus so it winning!

Pretty easy build; get a 223rem(say a Rem Model700 or Tikka), have Robbie chamber it for this round and do a slight mod to the mag well to allow the extra length. I had a BDL model 700 already I brought a couple of years ago second hand, and the gun smith work cost $260 including 100 cases and new mag spring(308 spring). Just using 223 Rem dies and 7mm spacer on the shell holder.