Thread: Stupid Question. bare with me please

Originally Posted by No.3

Get what you are saying, at a practical level I would think you are via QL eliminating several possible variables in case fill and from there possible variations in powder column surface area for the primer gas jet to work on and ignite. What you are saying seems to me to agree with the stuff I've looked at on the topic where to sum it up consistency of ignition is what gives low ES and SD velocity figures. In other words, the bullet does the same thing every time from chambering to departure... We run into that more and more at the weird ends of reloading, like reduced loads and subsonics where case fill is so light that you run almost intentionally into these issues and then have to work around them like with crimping for consistency.

YES! You get it! you need to be very careful with load around 90% and less case fill. They can cause a pressure spikes with a flash burn. I tried W760 in my 6.5-284 once and my ES was extremely bad and I had some really hot loads. I was pretty new to it all at the time and Mitch Maxbury put me right. It's all of these experiences over the years that point you in the right direction. And you have to think a bit.

I'd say on QL there are 3-4 possible powders for any given load but only 1 powder will give you the extreme low ES! That is my observation so far. ADI 2217 was slightly too slow for the WSM I was borderline for pressure and had ok ES around 15. I say around 15 because it would fire one randomly 30-40 over. I knew I had to go up but I was topped out on pressure so I was done with 2217. So shifted to RE25 it was better on QL but I only had a small amount to test, then a mate gave a bottle. I fired 4, 3 shot groups. First group was 68 of RE 25 nice group about .6moa I guess ES was 30. I upped it 2% to 69.4 10 thou off and the ES was 1.4 with a lovely 3 shot clover all touching. I then tuned it with 2 more groups to a bug hole. 12 shots fired in total.

This an F Class gun in a A5 stock. Your gun is the most important component to this whole thing. As Tracy Short said to me once " good ammo won't make a shit gun shoot" He is dead right I struggled with the 308 because it did random shots. I think it's a bedding issue but its some 3 piece stock thing. I have no idea. Not interested in it in the least. My point is if its a factory gun just do what Pommy said and make it go bang. You will chase your tail with this crap I'm talking about here.