OK gents I'm going to explain what I have done and why initially..........and yes I now have photos !!!!
I loaded 2 rounds each with 90 gn RBT Matrix bullets using weighed and neck turned W-W 22-284 brass I made some time ago. I used CCI 250 primers as all loads are over 50 gns of powder but I will still try standard large rifle primers as I tune loads. I used RL 25 powder and tried 55, 56, 57, 58 and 59 grs 2 rounds each...........why only 2 rounds???? Because I have limited components and time right now and all I was attempting was to establish maximum loads and fireform some brass. Cooling time is reduced and if I went past reasonable pressures it's less bullets to pull and even 2 rounds reduces anomalies. 2 rounds will also give an indication of potential accuracy, if one gets several 2 shot groups in a row that are very tight it does tell one something.
Secondly I loaded 2 rounds each of Matrix 100 gn FB bullets ahead of 53, 54, 55, 56 and 57 gns of RL 25 also using CCI 250s.
All loads were loaded to magazine max without any regard for rifling proximity, there is .234" of freebore in this chamber but I really wanted to check the feed properties of the rifle during this initial round of tests, feeding was absolutely flawless with 3 rounds under and still significant movement in the magazine, so the cartridges are not even slightly bound up. I find it interesting that the feeding was so slick considering the significant differences in case shape, length, taper, diameter and shoulder angle (originally a 22-250).
Anyway here are the photos of the 90 gn groups...........draw your own conclusions..........Grid is 1/2" squares.
Possibly you feel only 2 shots tells one nothing but I have learned over the years playing with wildcats and having sometimes very limited resources that 2 shots can be very revealing............as I believe these are.
Here are the 100 grn loads and I must apologize for all the extraneous holes but again limited targets and time and several rifles to test. I also got screwed up on my bulls on one group and it is indicated as such........
I actually shot these groups first and attribute some of the spreads to my shooting, I know I settled in better to the second rack with the 90 grners............again, draw your own conclusions..........
And finally here's some photos of the rifle...............
Barrel ended up being 27 1/4" long at this point and measures .715" at the muzzle