7mm Reg Mag Frustrations

Canhunter35 said:

Marksmanship gets overlooked a lot.

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tbrice23 said:

I got good accuracy with 175 EH at several seating depths but in my 28 Nosler found the best so far to be .093" jump.View attachment 92775

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lgordee said:

I understand that in many cases the extra space removed from deep seated bullets can be a liability. In the hunting rifle example I gave it was not an issue, in fact maybe an asset. The caliber was the old school 25-06. The powder was H4831SC. The charge weight was 52 grains which I chose from my ladder test. I am still left with quite a bit of room inside the case. I actually have not even checked velocity at this point. Past testing has shown around 60 fps more velocity using 4831 SC than straight 4831 of equal charge rates. I will check muzzle velocity and run a ballistic chart when I get a chance. I can shoot to 600 here, so I'll get actual scope settings after that.

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ifgator said:

I'm not quite sure I follow what you are saying in the beginning. However I will say that we all have certain things we want to achieve as well as certain limitations. In no way am I saying my way is the only way BUT the best thing about loading for myself is I get to do what I want to do. So 20 thousandth off the lands is safe for hunting as far as not worrying about jamming and then accidentally pulling a bullet out of a case and having a mess. Then 20 thousandth fulfills my other desire of minimal jump because I personally buy into the accuracy potential with less jump theory and then like I said more powder and less pressure.

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lgordee said:

My point was referring to your statement about deep seating bullets taking up valuable case space needed for powder. I'm simply making the point that depending on the case and powder being used, taking up some of that case space is not necessarily a detriment. I'm not following why you are pointing out you .020" seating depth choice in a response to my quote? I previously had remarked that it makes no sense to begin load testing for a hunting rifle with the bullet seated in the lands. Why would I want to waste components and barrel testing with a seating depth that it is not practical to use? On a competition rifle, starting seating depth testing into the lands is a useful practice. I don't subscribe to a theory that less jump equates to greater accuracy. I let the target tell me how much jump produces the best accuracy. If the powder charge weight is on the ragged edge of over pressure, then of course I would not to seat a bullet excessively deep into the case and use up internal volume. I think most competitive shooters would agree that optimum seating depth is a product of proper timing of the bullet exiting the barrel relative to the barrel's harmonics. Yes, we all can choose how we want to reload and test. Facts are some procedures are more effective than others. The main thing is to be safe.

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ifgator said:

As I said in my first post that I didn't read the whole thread and therefore didn't see your previous post. I didn't say less jump ALWAYS (absolute statement) results in greater accuracy. FOR ME I subscribe to that theory until it proves me wrong in a rifle or load. I'm not sure why you are going through so much effort to point out there are exceptions to some of the parameters I set for a hunting rifle by giving examples of competition shooters.
Reread what I wrote. I am very freaking careful not to slam a bullet , powder, method, or anything because the point of all of this is to do what we want for fun. This is the reason I offer help through PM because I try to share what works for ME and why I set up certain parameters for particular reasons. I personally couldn't care less if anyone believes or listens but I sure like to help if I can. I realize there is an exception to everything. Ask ten top shooters there will be 10 ways that works for them. See I try to help some dudes because I have some really awesome resources and I like to share and it's fun to set up for different types of hunting demands and I've been able to be successful setting up hunting rifles for different climates and hunts from freezing here in Idaho or in Africa, Mexico, Australia, New Zealand, etc., Having said that is my way the best. No. Did I say it was? No. For people who just care about ****ing matches and trying to prove people wrong without trying to learn together is why I don't post much.
However If anyone wants or needs help or just wants to throw ideas around then PM me and I'll be happy to let you know what has worked for me and I'm willing to help give starting points for your loads if you will fill out certain measurements for me and I'll plug into quickload etc. Have a good day.

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TexasTB said:

Hey everyone, thank you for all of the suggestions. Work has had me by the tail, so it took a couple of weeks to get back out to the range.

I shot at 100Y on Sunday with some 175 Bergers and 195 Bergers VLDs and Retumbo.
175 Berger Loads were 68.7g; 69.2g; 69.7g; 70.2g; 70.7g... bullet was loaded .010" from lands... best I got was 1.1" 3 shot group;
195 Berger Loads were 66.5; 67; 67.5; 68; 68.5; 69; 69.5... bullet was loaded .010" from lands... best group was .65" 3 shot group (not bad).

Took my semi-custom 243... it shot lights out with RL16, 105g Berger VLD .010" off lands... with 40.2g and 40.4g of RL16, I was able to shoot one ragged 3 shot hole and one cloverleaf.

I'm doing once over with 7mm mag... barrel clearance, torque wrench on all screws, etc as suggested...

I'm also going to try different distances from lands as suggested by Berger before I give up on the 175g and 180g that I also have... if those don't work, onto my 175g Nosler Accubond LR that I picked up.

If I can't get retumbo to shoot any of these I will move onto the RL23 that I picked up and I'll give the IMR 4955 a shot that I already have.

Lots of work to do before my Late October MT Elk Hunt...

Thanks again everyone... I enjoy reading through the suggestions and trying different solutions.

TexasTB

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TexasTB said:

Hey everyone, thank you for all of the suggestions. Work has had me by the tail, so it took a couple of weeks to get back out to the range.

I shot at 100Y on Sunday with some 175 Bergers and 195 Bergers VLDs and Retumbo.
175 Berger Loads were 68.7g; 69.2g; 69.7g; 70.2g; 70.7g... bullet was loaded .010" from lands... best I got was 1.1" 3 shot group;
195 Berger Loads were 66.5; 67; 67.5; 68; 68.5; 69; 69.5... bullet was loaded .010" from lands... best group was .65" 3 shot group (not bad).

Took my semi-custom 243... it shot lights out with RL16, 105g Berger VLD .010" off lands... with 40.2g and 40.4g of RL16, I was able to shoot one ragged 3 shot hole and one cloverleaf.

I'm doing once over with 7mm mag... barrel clearance, torque wrench on all screws, etc as suggested...

I'm also going to try different distances from lands as suggested by Berger before I give up on the 175g and 180g that I also have... if those don't work, onto my 175g Nosler Accubond LR that I picked up.

If I can't get retumbo to shoot any of these I will move onto the RL23 that I picked up and I'll give the IMR 4955 a shot that I already have.

Lots of work to do before my Late October MT Elk Hunt...

Thanks again everyone... I enjoy reading through the suggestions and trying different solutions.

TexasTB

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