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Based on your pictures of your three-shot groups, I would bet that if you shot each of those loads as ten-shot groups they would all be pretty much identical. I'd say pick one that has the velocity you want and run with it. Or, pick the 45 grain load to make your powder last longer, if you're hurting for powder. That's a round about way of saying "nice groups" and, "pick one". Personally, in my opinion, based on how good your groups are in the photo, seating depth is probably not going to matter much. It looks like you are there. Like I said, that's just my opinion.


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Originally Posted by bsa1917hunter
He's already .080" off the lands and you would seat them shorter? I'd go just the opposite direction and start at .020" off the lands. Just me though.

No one said go shorter - said "play with seating depth." It's a two way street that goes both directions...


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Originally Posted by Brad
Originally Posted by bsa1917hunter
He's already .080" off the lands and you would seat them shorter? I'd go just the opposite direction and start at .020" off the lands. Just me though.

No one said go shorter - said "play with seating depth." It's a two way street that goes both directions...

I did, so I imagine he's talking to me. With what he has, depending on which part of hunting season he is in, I'd rather be hunting, than worrying about tightening up an already killer load whistle


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I too liked the "cluster" of 45g, but when I was shooting I had them loaded so went what the hell and noticed 47. By not having a chrono (which I'm about to get one it seems), I decided with the presumed highest velocity charge.

I do see and I think I understand the 45g and the 46.5g as more of cluster than a vertical string. I would assume the vertical string is a sign of velocity changes? Faster charges would shoot higher?

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Oh, and my mags are L, and measure 3.370". So loading to the lands in my Tikka is 2.880" COAL so I'm good to try anything.
At 2.835" the bottom of the boattail is at the shoulder joint to case. At 2.860" seated further out just seems not alot of bearing surface. But wth do I know. Ha.

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Originally Posted by Brad
Originally Posted by bsa1917hunter
He's already .080" off the lands and you would seat them shorter? I'd go just the opposite direction and start at .020" off the lands. Just me though.

No one said go shorter - said "play with seating depth." It's a two way street that goes both directions...

Scotty said to go shorter. I guess you didn't catch that.. When loading anything, you need to start at the start. That is closer to the lands. The op is .080" off right now. I've loaded scenars a lot closer than that myself.. The op's loads and shooting seems to be consistent, which is great. At this point, arguing which one is better is a moot point, as he needs to shoot more, like I said in an earlier post. More groups and more shots per group, will tell the real story..


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Beretzs,
When you mean shorter, you mean longer COAL and closer to lands?

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Originally Posted by SDupontJr
I too liked the "cluster" of 45g, but when I was shooting I had them loaded so went what the hell and noticed 47. By not having a chrono (which I'm about to get one it seems), I decided with the presumed highest velocity charge.

I do see and I think I understand the 45g and the 46.5g as more of cluster than a vertical string. I would assume the vertical string is a sign of velocity changes? Faster charges would shoot higher?

Not necessarily.

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Originally Posted by TheBigSky
Based on your pictures of your three-shot groups, I would bet that if you shot each of those loads as ten-shot groups they would all be pretty much identical. I'd say pick one that has the velocity you want and run with it. Or, pick the 45 grain load to make your powder last longer, if you're hurting for powder. That's a round about way of saying "nice groups" and, "pick one". Personally, in my opinion, based on how good your groups are in the photo, seating depth is probably not going to matter much. It looks like you are there. Like I said, that's just my opinion.

This was along what I was thinking. I wouldn't worry about the seating depth.

Buy/borrow a chrono and see what you can't see without it. Shoot the same loads in groups of 3, and compare the second groups to the original, consider the new velocity data, and go from there.

All that said, I'm a generic load fan. If it's at MOA or under consistently, and it will do it from different rifles, I'll take that load over two different .5 MOA loads for two different rifles.

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Originally Posted by bsa1917hunter
Originally Posted by Brad
Originally Posted by bsa1917hunter
He's already .080" off the lands and you would seat them shorter? I'd go just the opposite direction and start at .020" off the lands. Just me though.

No one said go shorter - said "play with seating depth." It's a two way street that goes both directions...

Scotty said to go shorter. I guess you didn't catch that.. When loading anything, you need to start at the start. That is closer to the lands. The op is .080" off right now. I've loaded scenars a lot closer than that myself.. The op's loads and shooting seems to be consistent, which is great. At this point, arguing which one is better is a moot point, as he needs to shoot more, like I said in an earlier post. More groups and more shots per group, will tell the real story..

Yup, missed that BSA


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Aside, to the OP, do yourself a favor - in the age of $100 chronographs please ask for one for Christmas. It's one of the most important tools in safe handloading, and is a huge part of the overall load equation:

https://www.midwayusa.com/product/1022289790?pid=919444


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Great suggestion Brad.


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