Are we over loading when we should be under loading? 6UM<300WMS?

[Wprinkle]

Well hunting season is over for me so now time to obsess and over think.. I am relatively new to wildcats +- 6 years. All my wildcats require fire forming. I now fire form most everything even if not blowing out shoulders just because I believe it helps.. not enough to matter but I like it lol.

So to the point. I am sure you all have noticed as well as I have that "fire forming" loads are stupid accurate and normally I get a SD of less than 3-4FPS over 60-100 rounds. And groups under 1 MOA and most of em way tighter and those groups hold true at long range. (all from prone with bags no timer) So what If we have been going at this bass awkwards?

RokSlide for the most part is in the camp of getting the most acceptable wound channel we can out of the lightest recoiling delivery system we can. So we have taken "small" cartridges and hopped em up to achieve this. What if we take large cartridges and castrate em ie fire forming loads to achieve the same thing?

PROS: Longer barrel life, longer brass life, would we see the stupid good accuracy and tight SD (even though Form proved it is pretty much irrelevant for field shooting/hunting), Easier for new reloaders and non wildcatters to achieve.

CONS: nobody wants to walk around with a 300 RUM that performs like a 243 lol,

Yep, pole-vaulting over mouse turds but hay season is over, calving hasn't started and Im bored....

EDIT; That is supposed to be 300WSM not 300WMS

 

[longrangelead]

great, thanks!
another rabbit hole!

There does seem to be something to that within reason.
Most handloaders have probably found pushing most cartridges too hard degrades accuracy.

 

[Wprinkle]

great, thanks!
another rabbit hole!

There does seem to be something to that within reason.
Most handloaders have probably found pushing most cartridges too hard degrades accuracy.

I really noticed it with the fast 6mm. Maxed out I was basically getting two groups. A first shot/ cold bore group and a follow up shot group. Both extremely tight groups and when combined still sub 2MOA but I backed off .5 grains and poof all that went away.. And as you said when it was maxed out there was a noticeable accuracy degradation.