Read through this and you'll see and read great data that may answer some of your questions.
Last edited:
McGuire Ballistics 270 Heavy Copper Rose testing
- Thread starter Idaho Trecker
- Start date
Read through this and you'll see and read great data that may answer some of your questions.
Idaho Trecker
Well-Known Member
Small update. I was able to sneak in a quick shoot between storms where is actually wasn't snowing sideways to do a 513 yard test. Spring here is windy, snow in the moring, then sun and rain and more wind. I put paper up at my farthest (from my deck) stand to get a mid range bc estimate and fired 3 shots holding on the dot then measured the drop. I put in a g7 bc of .320 and it lined up within .3" of my measured average for the 3 shots.
Once the ground dries up some more and i can go to another location I'm going to try and get some 1000+ yard testing. I would like to note that the average speed of these 3 rounds were 25fps slower (3300 fps)than the last outing when I shot this load. The vertical on the 3 shots was 0.8" but overall horizontal was 4.1". Two shots went for 1.2". I'd call the excessive horizontal a bad hold on my part. I'm very happy with the way these are shooting and hope to find a bear for them this spring.
Once the ground dries up some more and i can go to another location I'm going to try and get some 1000+ yard testing. I would like to note that the average speed of these 3 rounds were 25fps slower (3300 fps)than the last outing when I shot this load. The vertical on the 3 shots was 0.8" but overall horizontal was 4.1". Two shots went for 1.2". I'd call the excessive horizontal a bad hold on my part. I'm very happy with the way these are shooting and hope to find a bear for them this spring.
A g7 of .320 is better than I expected.
Idaho Trecker
Well-Known Member
So far it is pretty good but that's not a real far distance. When conditions are right I'll be testing it at a 1000+ and will have a better idea or at least another point of data to average in. I'll also be trying to catch some bullets in a couple different types of media at lont range.
Idaho Trecker
Well-Known Member
This spring weather is a real roller coaster here this year! Made it out late morning to see if i could get a set up without too much wind or mirage for some data with less variables involved. Set the target up and started walking with all my stuff and ended up at 1127 yards. I'm using the .320 g7 that I used last time for 513 yard test and it held up pretty close this time as well. AB called for 21.5 moa up and I ended up a half moa low. Playing with numbers put me at a .310 G7 today. I'm going to try and make it out one more time between now and tomorrow evening to repeat at same distance. I only shot 3 rounds but wish I would have taken more with me. I didnt hold enough wind and one shot went off paper and appeared to only be by an inch or two and within the same height as the other two but that is all speculation and how my eyes saw it. The shots on paper had 4.5" height difference. Speeds were 3305, 3308, and 3327.
Yes that's my vehicle at the top, and no i wasn't worried about it just to get that out of the way
Now for the bullet performance. I was able to recover one of the bullets (I'll go back out with a shovel to hopefully find the others). The wet palouse dirt is a pretty dense medium and is probably close-ish to meat. Impact velocity was 1886 fps and had 1177 ft-lbs. The bullet looks amazing! I'm super impressed how it still opened up with those parameters in the world of monos! I've shot other mono's at same distances into the same dirt and not had as good of results. Most of them usually just bananna over or pencil right in with almost no expansion. On the next outing I'm going to try and get a 5 gallon water jug to put behind the paper and see if I can scrounge up a few elk bones to put in front of it. The one I recovered so far had a frontal diameter of .520x.670 and weight retention was also amazing! The overall length of the recovered bullet is right at .9".
Yes that's my vehicle at the top, and no i wasn't worried about it just to get that out of the way
Now for the bullet performance. I was able to recover one of the bullets (I'll go back out with a shovel to hopefully find the others). The wet palouse dirt is a pretty dense medium and is probably close-ish to meat. Impact velocity was 1886 fps and had 1177 ft-lbs. The bullet looks amazing! I'm super impressed how it still opened up with those parameters in the world of monos! I've shot other mono's at same distances into the same dirt and not had as good of results. Most of them usually just bananna over or pencil right in with almost no expansion. On the next outing I'm going to try and get a 5 gallon water jug to put behind the paper and see if I can scrounge up a few elk bones to put in front of it. The one I recovered so far had a frontal diameter of .520x.670 and weight retention was also amazing! The overall length of the recovered bullet is right at .9".
- Joined
- Feb 5, 2012
- Messages
- 9,016
- Reaction score
- 29,067
- City & State/Province
- West Terre Haute Indiana
Nice trigger work BrotherThis spring weather is a real roller coaster here this year! Made it out late morning to see if i could get a set up without too much wind or mirage for some data with less variables involved. Set the target up and started walking with all my stuff and ended up at 1127 yards. I'm using the .320 g7 that I used last time for 513 yard test and it held up pretty close this time as well. AB called for 21.5 moa up and I ended up a half moa low. Playing with numbers put me at a .310 G7 today. I'm going to try and make it out one more time between now and tomorrow evening to repeat at same distance. I only shot 3 rounds but wish I would have taken more with me. I didnt hold enough wind and one shot went off paper and appeared to only be by an inch or two and within the same height as the other two but that is all speculation and how my eyes saw it. The shots on paper had 4.5" height difference. Speeds were 3305, 3308, and 3327.
View attachment 656183View attachment 656190
Yes that's my vehicle at the top, and no i wasn't worried about it just to get that out of the way
Now for the bullet performance. I was able to recover one of the bullets (I'll go back out with a shovel to hopefully find the others). The wet palouse dirt is a pretty dense medium and is probably close-ish to meat. Impact velocity was 1886 fps and had 1177 ft-lbs. The bullet looks amazing! I'm super impressed how it still opened up with those parameters in the world of monos! I've shot other mono's at same distances into the same dirt and not had as good of results. Most of them usually just bananna over or pencil right in with almost no expansion. On the next outing I'm going to try and get a 5 gallon water jug to put behind the paper and see if I can scrounge up a few elk bones to put in front of it. The one I recovered so far had a frontal diameter of .520x.670 and weight retention was also amazing! The overall length of the recovered bullet is right at .9".
View attachment 656180View attachment 656181View attachment 656182
- Joined
- Sep 6, 2023
- Messages
- 450
- Reaction score
- 1,796
Great job!!!This spring weather is a real roller coaster here this year! Made it out late morning to see if i could get a set up without too much wind or mirage for some data with less variables involved. Set the target up and started walking with all my stuff and ended up at 1127 yards. I'm using the .320 g7 that I used last time for 513 yard test and it held up pretty close this time as well. AB called for 21.5 moa up and I ended up a half moa low. Playing with numbers put me at a .310 G7 today. I'm going to try and make it out one more time between now and tomorrow evening to repeat at same distance. I only shot 3 rounds but wish I would have taken more with me. I didnt hold enough wind and one shot went off paper and appeared to only be by an inch or two and within the same height as the other two but that is all speculation and how my eyes saw it. The shots on paper had 4.5" height difference. Speeds were 3305, 3308, and 3327.
View attachment 656183View attachment 656190
Yes that's my vehicle at the top, and no i wasn't worried about it just to get that out of the way
Now for the bullet performance. I was able to recover one of the bullets (I'll go back out with a shovel to hopefully find the others). The wet palouse dirt is a pretty dense medium and is probably close-ish to meat. Impact velocity was 1886 fps and had 1177 ft-lbs. The bullet looks amazing! I'm super impressed how it still opened up with those parameters in the world of monos! I've shot other mono's at same distances into the same dirt and not had as good of results. Most of them usually just bananna over or pencil right in with almost no expansion. On the next outing I'm going to try and get a 5 gallon water jug to put behind the paper and see if I can scrounge up a few elk bones to put in front of it. The one I recovered so far had a frontal diameter of .520x.670 and weight retention was also amazing! The overall length of the recovered bullet is right at .9".
View attachment 656180View attachment 656181View attachment 656182
7.62 Gunner
Well-Known Member
Is that wifey's Honda?
You'd better not hit that or your *** is done shooting for the year..
At least wait until after the Snake River NRL match
You'd better not hit that or your *** is done shooting for the year..
At least wait until after the Snake River NRL match
Idaho Trecker
Well-Known Member
Is that wifey's Honda?
You'd better not hit that or your *** is done shooting for the year..
At least wait until after the Snake River NRL match
Yes it is.... they can be replaced... I'll still go to the match
Idaho Trecker
Well-Known Member
Third outing of the day seemed to be the charm. It was one of those days. In the end I was able to accomplish what I set out to do. The .310 g7 still seemed to hold up on all three outings today. I started out getting everything ready a couple hours before the sun came up in hopes to be set up and hiked out to the shooting point at sun up before the wind started up as bad as predicted. After loading up the first vehicle I found out it was out of fuel and had to move everything. Finally made it out and setting up to try and kill two birds with one stone turned out to only kill one bird and the other gave me the bird on its way out. I tried to get some more drop/groups on paper and at the same time hit my wet newspaper and water jug. This proved to be to much to do at once. The slope of the hillside and trying to judge where they would line up didn't work out. I really wanted to try and catch one of the bullets at the 1127 yard mark but didnt happen.
The second outing I tried at 1127 yards again but the kestrel was spitting out 21 mph winds. They were almost directly from my back but the few degree swing in direction kept throwing me off and never connected.
Ran back out for one last ditch effort and 6 rounds loaded up. I decided to stop one ridge short of where I had been shooting from. Winds were roughly same angle and about half strength of earlier. This time around the first shot connected at 922 yards. Finally felt like I figured out how to shoot again.
The cardboard box full of soaked newspaper was 3.5" thick and was right up against the 5 gallon water jug. I was on the right edge but fully went caught newspaper all the way through and then zipped through the 5 gallons and exited into the wet Palouse silt for 4 inches. The water jug was 10" thick worth of water travel. The exit in the plastic is just over one inch in diameter. The hydraulic shock tore out the side of the jug for 6 inches. There was one fragment in the water jug. As for the cardboard box full of wet paper I have not tore it apart yet but the exit was just over one inch. The impact velocity was 2110 fps and 1473 ft-lbs of energy. Weight retention was incredible as well as how these bullets open up. I am yet again very impressed with these bullets and can't wait to connect with some animals.
The second outing I tried at 1127 yards again but the kestrel was spitting out 21 mph winds. They were almost directly from my back but the few degree swing in direction kept throwing me off and never connected.
Ran back out for one last ditch effort and 6 rounds loaded up. I decided to stop one ridge short of where I had been shooting from. Winds were roughly same angle and about half strength of earlier. This time around the first shot connected at 922 yards. Finally felt like I figured out how to shoot again.
The cardboard box full of soaked newspaper was 3.5" thick and was right up against the 5 gallon water jug. I was on the right edge but fully went caught newspaper all the way through and then zipped through the 5 gallons and exited into the wet Palouse silt for 4 inches. The water jug was 10" thick worth of water travel. The exit in the plastic is just over one inch in diameter. The hydraulic shock tore out the side of the jug for 6 inches. There was one fragment in the water jug. As for the cardboard box full of wet paper I have not tore it apart yet but the exit was just over one inch. The impact velocity was 2110 fps and 1473 ft-lbs of energy. Weight retention was incredible as well as how these bullets open up. I am yet again very impressed with these bullets and can't wait to connect with some animals.
Last edited:
Excellent!!!! Thanks for the info.
31perersen
Well-Known Member
- Joined
- Mar 26, 2013
- Messages
- 138
- Reaction score
- 72
nice, I'd like to see how the g7 bc tracks as you get to 1120
- Joined
- Sep 6, 2023
- Messages
- 450
- Reaction score
- 1,796
- Joined
- Sep 6, 2023
- Messages
- 450
- Reaction score
- 1,796
Great job Ryan!!!
