Your 270 load sounds pretty stout…plenty to get the job done for sure! 7mag is still a step above though. Figure 140gr at 3250fps, 150gr at 3150fps and 160gr at 3050fps. Reloads vs reloads, I’m pushing 180gr at 3000fps in my 7 mag.
I’ve found 7828ssc to be pretty good. Not worth $50-$60/lb to me personally. Not sure I would pay that price for any IMR powder honestly. Hodgdon does because they can and fortunately for me, I don’t have to pay those prices.
Edit: Yes, H1000 was the one for me that made IMR7828 irrelevant...
I’m sure by now that you realize something is seriously wrong. It’s not supposed to be this difficult. As for removing the expander button from the die….that’s pretty common but if you do that, you’re going to have to expand the necks in a separate operation with an expander mandrel. You can’t...
I feel like part of your problem is the turret press but I could be wrong. I’ve only ever used a single stage but I’ve also never had problems like you are experiencing. I’ve never heard of the loctight method you are using and for sure haven’t tried that myself so I can’t say how accurate that...
You know that the headspace gauges don’t even have shoulders on them right? Yes, that allows the shoulder to possibly blow forward until it hits the shoulder in the chamber. The false “neck shoulder” helps and so would fire forming with a bullet lightly jammed into the lands. The guys that full...
.223/LC 5.56/.247”/SAAMI/ fired is .254”
.243/Win/.272”/SAAMI?/fired is .278”
.243/Lapua/.273”/SAAMI?/fired is .278”
7mm-08/Win/.309”/SAAMI?/ fired is .317”
7mm-08/308 starline/.315”/SAAMI?/fired is .317”( Works but should probably shave these necks)
7mm REM Mag/Win/.310”/SAAMI?/fired is .313”
I’m confused….shocking right? You’re last post, 2nd pic “unturned Norma 76.4 gr 3 shot group” looks exactly like your first post “
I’m confused….shocking right? You’re last post, 2nd pic “unturned Norma 76.4 gr 3 shot group” looks exactly like your first post “In the first picture, with Lapua ...
It’s usually a powder that isn’t available to reloaders but it may be pretty close to something available in some cases. I imagine that in some cases it may even be the same as what is available to us but impossible to know for sure. Add a pic if you want, we can guess but don’t take it to the bank…
“So do any of you have an experience where changing seating depth, powder, charge weight, bullet type failed to give the accuracy you sought, and neck Turing did?”
I guess we just see this question differently? The tight necks on the 300 win mag was causing pressure issues which caused accuracy...
Exactly…he had a known, good load with acceptable accuracy for himself. Changed brass and ran into the neck clearance issues evidently. He was not starting from scratch and couldn’t find any load that shot, turned his necks and then bam, magic accuracy. I agree that most people won’t see a...
I don’t think it works like that. Accuracy is sort of like cooking…if you start with ingredients that you don’t like, they aren’t going to taste good even if they’re perfectly cooked! I’m in for experienced answers to your question though….
I do not neck turn and for the most part, have been able to find acceptable accuracy for my needs(1/2moa-1moa…occasionally better). I’ve considered trying neck turned brass to see if it makes a difference…..