The data I am seeing over at Alliant for this powder seems pretty mild in the 2506 based on how far I pushed reloader 22.... if you haven't tried it with the 110 accubond have you been able to push the 120s to anything speedy?
I cannot answer in the 4570 but I had the same scenario with some 3030 bullets. I instantly found a stellar load with the uncoated ones that wasn't quite there with the coated ones... and they were slightly slower with the same load but not much.
Then I picked up some leverevolution powder and...
I have been schooled by some people much much smarter than me that bullets do not fall asleep as they go down range.
I accept their Brilliance over mine!
But I have seen and understand and believe in groups getting smaller MOA wise as you go further out.
I agree with dr. Mike that you might get a little bump and pressure but if you're not operating near max I don't think it'll be a problem at all. If I was you I would run a little experiment over the chronograph with both primers in temperatures that are like what you would be hunting in and...
Remington rifles can kind of be all over the board on free bore. If I were you I would check it by using the slip fit bullet / case method.... do you know how to do that with a Fired case where you manipulate the mouth so that you can slide a bullet in but yet it has enough friction to hold it...
I have a regular chamferer and a VLD on my 5 station RCBS trim mate.... I use the vld on all my brass and I use it also fairly often as the round count increases on my brass.... not always every loading but usually at least every other one..... I think it is help me a quite a bit with run out also.
I am a Wipeout lover and check my bores with a Lyman borescope which I really like for about $200.
It's been my experience that Wipeout sometimes stays ahead of carbon fouling and sometimes it doesn't..... but it almost always does a stellar job on copper. The other funny thing you will learn...
Heck no... the primer pockets are the only ones I listen to....well....
That is unless it's Federal virgin fired WSM brass with the really bright shiny marks and expanded pockets...lol!
Fotis... you are right the readings are pretty much useless.... but it can do it and some people might find it kind of cool.
Regarding the positioning I have seen some charts somewhere about where to position for different muzzle deals.
I don't think I've tried anything with a muzzle brake yet...
Medium to light loads will also get you varying headspace. At least it has for me. Near max gets me a more consistent headspace but certainly is not a reason to do it...lol
The 150 Hornady is an awesome great overall bullet for the 270 win. Works on deer and Elk beautifully.
I have had good luck with 7828 SSC also and I have also had really good luck with MagPro.
The 4831 s and anything in their burning range and slower could be like ice cream and apple pie.
Fwiw... I have a 340 Weatherby that is not impressed much with anything lighter than 250 grain bullets. It really really likes 250 grain partitions and 250 Hornady Spire point.
Pulling it back it is! That is what I have always done and I've had pretty good luck overall but there are days where I get those "what the heck is going on" groups. I guess there are gremlins in shooting that are every bit as naughty as when you look up while playing golf!
Fotis.... you shoot some fantastic groups..... that doesn't quite look like a LED sled that you're gun is sitting on but pretty darn close. Can you give us some hints for how you hold the gun in that cradle? Are you floating it.... using a little down pressure..... or just plain pulling it...
There are times no matter how hard we try we cannot get a gun to "like" a certain bullet. I usually feel a lot more confident that a bullet will pan out if I am getting reasonably good groups across a broad spectrum of powder and powder charges..... it seems like then finding the magic extra...
And here's a crazy tip given to me by a guy that shoots alot of Barnes. Start load development by seating the bullet so that the top 1/3 of the top groove is exposed from the case mouth......this if it gives a reasonable jump to rifling...it has in most my rifles. Then work back or forward...
Fwiw It's Not Unusual in my weatherby's to see the bullets gain velocity as they are seated deeper. I believe the difference is in the freebore throat of most weatherby's.... It's not the same situation as most throats in normal rifles. The Weatherby throat already gives you a run to the...