Decided to build a 25 creedmoor. I know a few of you guys have asked for progress, and I'll do my best to keep it updated. Preferred barrel blanks made the barrel, with .150" freebore vs the standard offering. 1:7 twist, 20" long. Eventually, I'll have a suppressor on it. Used a tikka action, they're relatively cheap and I can get prefit barrel. I was able to do all the work myself. Trijicon credo 2.5-15 scope
Initial testing had me looking for pressure. There's not a ton of info out there, but I knew I needed to start around 40gr of h4350 with the 134 eldm. I ended up have a slight ejector mark at 44.5. I do know some guys got over 3000 fps, but I'm sure their barrels were much longer. I did shoot one at 45gr and had an ejector mark as well Wasn't bad, wasn't a swipe, but was there I'll not go over 44gr at this point.
I did try a group at 42gr during my pressure test load and was happy with the accuracy, but the speed wasn't hardly there. I may come back to it, but we'll see.
Decided to start at 43.5 and 44gr. 44 wasn't great, 43.5 was much better but I was on a spongy bench. The one "flyer" ruined the group, but it's promising.
Went home and shot off a better bench. Results certainly changed. Here's 12.
I made a slight scope adjustment, and shot 3 more.
Currently I'm at .020 off the lands. That's usually where I start and have had good luck. It was suggested to try .050, so that'll be the next test group.
Initial testing had me looking for pressure. There's not a ton of info out there, but I knew I needed to start around 40gr of h4350 with the 134 eldm. I ended up have a slight ejector mark at 44.5. I do know some guys got over 3000 fps, but I'm sure their barrels were much longer. I did shoot one at 45gr and had an ejector mark as well Wasn't bad, wasn't a swipe, but was there I'll not go over 44gr at this point.
I did try a group at 42gr during my pressure test load and was happy with the accuracy, but the speed wasn't hardly there. I may come back to it, but we'll see.
Decided to start at 43.5 and 44gr. 44 wasn't great, 43.5 was much better but I was on a spongy bench. The one "flyer" ruined the group, but it's promising.
Went home and shot off a better bench. Results certainly changed. Here's 12.
I made a slight scope adjustment, and shot 3 more.
Currently I'm at .020 off the lands. That's usually where I start and have had good luck. It was suggested to try .050, so that'll be the next test group.
