Joined
·
195 Posts
I decapped them all before washing. I just missed it. Pin just pushed through it apparently.
I always pick up my brass. Sometimes get a few strays that aren't mine.
This one was probably already corroded.
What did you reload today?
161 - 180 of 243 Posts
I always pick up my brass. Sometimes get a few strays that aren't mine.
This one was probably already corroded.
I headed out to the CMP range with my REM 700 .308 and those rounds I loaded. Harris bipod and homemade sand bag
I was told by the range master to find group size you divide the “c-c” number by 25.4
So that comes to 5.95” 10 shot group at 600
A true minute of angle rifle and ammo combo
![Camera lens Camera accessory Reflex camera Digital camera Point-and-shoot camera]()
![Tripod Machine gun Gas Asphalt Air gun]()
I was told by the range master to find group size you divide the “c-c” number by 25.4
So that comes to 5.95” 10 shot group at 600
A true minute of angle rifle and ammo combo
Attachments
Joined
·
75,748 Posts
Tell us more about the .308 Remington 700 rifle, scope, and 175 Sierra load. Damn good shooting. Any wind?
A Remington 700 with a jewel trigger. Lugs were lapped but no blue printing. The stock is just a hs precision hunting style stock with aluminum bedding blocks. I did skim bed it with devcon though…don’t know if that helped or not. The barrel is a schilen 1/10 twist standard varmint contour. Scope is a Nightforce nxs 5.5-22x50 N.F. rings and bases.
43.5 grains varget..cci br2 primer 175 Sierra matchking bullet with about .004” jumpat 2700 fps
There was a left to right wind in the beginning when I was shooting for score. Later when the wind died and I learned how to calculate group size from the monitor , I shot those last 10 with no scope adjustments for group.
A little better pic
![Tire Wood Tints and shades Sports equipment Metal]()
43.5 grains varget..cci br2 primer 175 Sierra matchking bullet with about .004” jumpat 2700 fps
There was a left to right wind in the beginning when I was shooting for score. Later when the wind died and I learned how to calculate group size from the monitor , I shot those last 10 with no scope adjustments for group.
A little better pic
Joined
·
75,748 Posts
I do not know how many reading here know what a feat you accomplished.
3 shot group at 100, 5 shot group at 100 debate
This is 10 shots at 600, and 5.95 inches. Impressive.
Was the .004 jump the best for accuracy? Have you tried a larger figure, like .010 or more? Do you intend to keep increasing overall length as the lands inevitably erode?
precisionrifleblog.com
I bet a .308 wears even faster.
A lot of top competitors in PRS load their rounds to the overall length that puts them in the middle of a range of erosion they estimate will occur from the start to the end of the match. Complicated stuff. Some of them are finding that the rounds are more accurate in some rifles at a much larger figure, like .020 off the lands. So they take their measurements, figure out how many rounds they will be shooting at the next match (they have already been tracking wear and erosion) and then set the overall bullet length to be .020 (or whatever was most accurate) back at about the halfway point in the match, so they will be as close to either side of that most accurate overall length for the entire match. I guess paying attention to details like that is one reason they are at the top.
My .308 Remington VS shot most accurately with the bullet extended to the point that it there was some resistance closing the bolt and the neck only (rest of the previously fired case untouched). But these PRS guys are not doing it that way these days. There is some really interesting reading out there on it, if you are interested. I haven't tried any of this - just read online about others doing it.
3 shot group at 100, 5 shot group at 100 debate
This is 10 shots at 600, and 5.95 inches. Impressive.
Was the .004 jump the best for accuracy? Have you tried a larger figure, like .010 or more? Do you intend to keep increasing overall length as the lands inevitably erode?
That means the lands on my 6mm Creedmoor eroded 0.077” over 1300 rounds, which is an average of 0.0059” every 100 rounds(i.e. 0.077 ÷ 1300 × 100).
How Fast Does A Barrel Erode?
A match-grade barrel is a big investment for many shooters, so how much life you can expect from it...
precisionrifleblog.com
I bet a .308 wears even faster.
A lot of top competitors in PRS load their rounds to the overall length that puts them in the middle of a range of erosion they estimate will occur from the start to the end of the match. Complicated stuff. Some of them are finding that the rounds are more accurate in some rifles at a much larger figure, like .020 off the lands. So they take their measurements, figure out how many rounds they will be shooting at the next match (they have already been tracking wear and erosion) and then set the overall bullet length to be .020 (or whatever was most accurate) back at about the halfway point in the match, so they will be as close to either side of that most accurate overall length for the entire match. I guess paying attention to details like that is one reason they are at the top.
My .308 Remington VS shot most accurately with the bullet extended to the point that it there was some resistance closing the bolt and the neck only (rest of the previously fired case untouched). But these PRS guys are not doing it that way these days. There is some really interesting reading out there on it, if you are interested. I haven't tried any of this - just read online about others doing it.
There was no difference between .004 and .010 that I could tell. Beyond .010”, I saw a little loss in accuracy, but definitely could tell that against or jammed didn’t do as well. So I seated on the short side of that window to allow for throat wear. I’ll reassess in 300-400 rounds.
I’ve done the three and 5 shot groups myself before. It’s easy to kid yourself into thinking you have a 1/4 minute rifle….I’ve done it myself.
There is a good read on ar15.com that’s easily found. Search “The trouble with 3 shot groups”
One of the few good write ups I’ve seen at that place.
I’ve done the three and 5 shot groups myself before. It’s easy to kid yourself into thinking you have a 1/4 minute rifle….I’ve done it myself.
There is a good read on ar15.com that’s easily found. Search “The trouble with 3 shot groups”
One of the few good write ups I’ve seen at that place.
A .308 is supposed to have a good barrel life. I always thought erosion was a function of powder volume and bore diameter. I’m surprised at the 6.5-.284 figures in that article. I’ve read the life is around 1000-1200 rounds.I do not know how many reading here know what a feat you accomplished.
3 shot group at 100, 5 shot group at 100 debate
This is 10 shots at 600, and 5.95 inches. Impressive.
Was the .004 jump the best for accuracy? Have you tried a larger figure, like .010 or more? Do you intend to keep increasing overall length as the lands inevitably erode?
That means the lands on my 6mm Creedmoor eroded 0.077” over 1300 rounds, which is an average of 0.0059” every 100 rounds(i.e. 0.077 ÷ 1300 × 100).
How Fast Does A Barrel Erode?
A match-grade barrel is a big investment for many shooters, so how much life you can expect from it...
I bet a .308 wears even faster.
Joined
·
6,750 Posts
That's some fine shooting there. I've been a couple of places in my life that I'd like to have had you next to me.
This defeats the purpose of reloading but the Decatur Walmart had tons of .350 legend on Sunday. Passing it along as that’s an uncommon ITP round. 🤣
161 - 180 of 243 Posts
