Always fun to see vast improvements. Even better when it's on 2 different guns.
That 93 Mauser in 300 Savage I got a couple months back, I had run up with single charges to 43 grains of H4895 with a 125 BT. Picked a charge at 41 grains and tried 6 with 2 different brand primers. It shot a 4" group in a string! Knew something was wrong as no load can be off that far. Through some crude measuring methods by compressing the firing pin spring on a digital scale, I determined for one thing it had a weak firing spring. Ordered a new spring for it and that shrunk the group in half. Gave it a good bore cleaning and went back today and it shrunk again. Tried a 41 load and a 41.4 with a .020 deeper seating depth. Shot right at 1 1/4" which honestly until I get rid of the military trigger which has a football field length of creep in it, that might be as good as I can shoot it.
First target test of 4".

Today after working on it.

.4 grains more and seated .020 deeper. I wont mess with it any more until I get a new trigger.


Also pulled out a CZ 98 Mauser in a heavy barreled 22-250 I picked up cheap last yr pretty much for the action. Little bit I initially messed with it last yr I wasn't too impressed and since I had plenty of other stuff to work on I put it back until now. I had already cleaned it good as the bore was practically plugged when I got it, but now I gave it a serious cleaning down to bare metal and started over with the tried and true H380.
Just loaded up 3 each at 38, 38.2, and 38.4. After 2 fouling shots the 38 group shot 1 an 1/4" which is pretty much what it was doing, the 38.2 knocked it down to 3/4", and the 38.4 came down to 1/2". I might try just a touch hotter and mess a little bit with seating depth just in case it will shoot down in the 3's but if it will shoot 1/2" I'm happy.


That 93 Mauser in 300 Savage I got a couple months back, I had run up with single charges to 43 grains of H4895 with a 125 BT. Picked a charge at 41 grains and tried 6 with 2 different brand primers. It shot a 4" group in a string! Knew something was wrong as no load can be off that far. Through some crude measuring methods by compressing the firing pin spring on a digital scale, I determined for one thing it had a weak firing spring. Ordered a new spring for it and that shrunk the group in half. Gave it a good bore cleaning and went back today and it shrunk again. Tried a 41 load and a 41.4 with a .020 deeper seating depth. Shot right at 1 1/4" which honestly until I get rid of the military trigger which has a football field length of creep in it, that might be as good as I can shoot it.
First target test of 4".

Today after working on it.

.4 grains more and seated .020 deeper. I wont mess with it any more until I get a new trigger.


Also pulled out a CZ 98 Mauser in a heavy barreled 22-250 I picked up cheap last yr pretty much for the action. Little bit I initially messed with it last yr I wasn't too impressed and since I had plenty of other stuff to work on I put it back until now. I had already cleaned it good as the bore was practically plugged when I got it, but now I gave it a serious cleaning down to bare metal and started over with the tried and true H380.
Just loaded up 3 each at 38, 38.2, and 38.4. After 2 fouling shots the 38 group shot 1 an 1/4" which is pretty much what it was doing, the 38.2 knocked it down to 3/4", and the 38.4 came down to 1/2". I might try just a touch hotter and mess a little bit with seating depth just in case it will shoot down in the 3's but if it will shoot 1/2" I'm happy.

