05-29-2020, 08:29 PM
I just use the 10 rounds over chrono to find max presure with as few rounds as possible. But generaly, its only used when i dont have load data for that bullet and powder combo.
If there is data, i know well enough how my barrel work so i know quite well where i will find accuracy or velocity i want.
I can even use 3 shot groups, but often i load 5 but if the group is to big after 3 shots (or even 2!) i move on not wasting bullets. In my howa mini with varmint barrel (20") i tend to find several loads that can go 0.5-0.9 inch. And if im going to hunt with them, a 3 shot sub 1" inch is enough for deer up to 200 meters - most shots are free hand anyway.
whats more importaint is COLD BORE shots, and that they are reliable. If i go on the range i can take up to 5 or 10 shots on same target, but with long times inbetween.
One thing you need to remember though, shooting groups outside without any wind indicator is wasted bullets. I have had load go 5 shot inside 0.25", to never again perform like that. Reason was that wind moved the bullets the way i liked it.
During matches i tend to get 0.3-0.5" groups with windcalls (5 x 5), and thats what my hunting rifle can perform at its best, and thats on par with 10 other people shooting similar calibers (6.5x55, 308).
To get anything sub 0.3" or 0.25" requires a full bench rest setup, and thats not reasonable. so people claiming 0.25" groups are just lucky most of the time.
Best 5 x 5 avrage was 15mm but that was with 6.5x55
If there is data, i know well enough how my barrel work so i know quite well where i will find accuracy or velocity i want.
I can even use 3 shot groups, but often i load 5 but if the group is to big after 3 shots (or even 2!) i move on not wasting bullets. In my howa mini with varmint barrel (20") i tend to find several loads that can go 0.5-0.9 inch. And if im going to hunt with them, a 3 shot sub 1" inch is enough for deer up to 200 meters - most shots are free hand anyway.
whats more importaint is COLD BORE shots, and that they are reliable. If i go on the range i can take up to 5 or 10 shots on same target, but with long times inbetween.
One thing you need to remember though, shooting groups outside without any wind indicator is wasted bullets. I have had load go 5 shot inside 0.25", to never again perform like that. Reason was that wind moved the bullets the way i liked it.
During matches i tend to get 0.3-0.5" groups with windcalls (5 x 5), and thats what my hunting rifle can perform at its best, and thats on par with 10 other people shooting similar calibers (6.5x55, 308).
To get anything sub 0.3" or 0.25" requires a full bench rest setup, and thats not reasonable. so people claiming 0.25" groups are just lucky most of the time.
Best 5 x 5 avrage was 15mm but that was with 6.5x55