Geissele Cut Rifled SPR Build and Barrel Evaluation. (Part 4 (Load Development 28MAY25) Update!!!
- By Bigjake83
- Semi-Automatic Rifles
- 94 Replies
Good speed out of that load and single digit SD’s is just icing on the cake. Nice work
I’ve been waiting to see how those loads performed in hot weather, I was battling some serious Mirage so I'm going to load up another hundred of that 24.3 and go out early in the morning so my targets aren't dancing around in a mirage.
Yesterday was our first 90° day and my concern was that the TAC not being as temp stable would show pressure spikes at the 24.5gr mark and it did.
I'm still going to do some testing with XBR, with the 73's and 77's when I start load development for the Geissele Heavy Contour Chromed lined barrels.
Here is the data for the 24.5grs of TAC, just broke the 2900fps barrier but starting getting ejector swipes.
Those are definitely impressive numbers, if you look in the other thread I just Updated with a 22 ARC Build (The Green Goblin) the 20" 22 ARC barrel is pushing the 75gr ELD's around 2950fps.
The Geissele 18" SPR Cut Barrel is definitely among the fastest .224 Cal Barrels I own. Looking forward to the results of the 73gr Bergers and ELD's.