Last week I started working with the 225107 in my .222 rem. Curious as to how fast I could push this little bullet and maintain some degree of accuracy I loaded h4895 @ 19, 20, 21 and 22 grs and WSR primers, no dacron. Groups were shot at 100 yds. and 5 shots
19 grs gave a round group about 2", 20 grs had 4 under 3/4" with the first shot out about 3/4". 21 grs was strung horizontal about 6" wide and 1/2" high with 22 grs. 4 1/2" wide by about 1" high.
My initial thought was that the 20 grs was the max load with the alloy I was using. The chrono said fps was avg. at 2450. I was mostly pleased with the results and started making plans to shoot more of this load to see if it would hold up over the long run.
The next day I was deep in the archives looking for something or the other and managed to come across a post by BAbore in regards to horizontal groups where he stated .......
" You will find that most powders will exhibit vertical stringing when they not burning well. As you go up the ladder they will tighten to almost round , then my spread horizontal. This may repeat several time before a final roundish group, then they blow apart on you." (quoted from post by BAbore)
I thought this was similar to what I got with the 225107 so I figured "what the heck". I went back this morning with 22.5 grs and 23 grs, the 23 gr load being slightly compressed. The first shot with the 22.5 was the first shot of the morning (temp was mid 40's) and it flew way out almost 3" with the next four under an inch high by less than half an inch wide. Not letting the barrel cool off I shot the 23 gr. load and got a group just under 2" high by about 1" wide.
More shooting will tell if it will hold up but it was interesting to see for myself what BAbore described, at least it appears that way.
Darrell
Ignore the shot half in the black just to the right of the orange bull.