I’ve started preparations for an upcoming Buffalo hunt in Moz, taking my CZ .458 Lott this time, been loading ammo for it using the same loads as in years past that is accurate and works well on animals. So, I stepped out yesterday to shoot a few at 25 yards and my “practice” load struck 4” low at 25 yards, my full power hunting load struck 6” low at the same distance. Both had been on at 25 yards, practice load a bit low at 100 and hunting load 1”-1.5” high at 100. Not enough elevation in the scope to zero (Leupold 2.5x8) and thought scope might’ve crapped out, so swapped a Leupold 1x5. Laser bore sighted and then shot both loads again with same result. Way low. Anyone had this happen before? Thinking of placing a shim under the barrel to see if that might help?

Easy; your wood stock has moved (warped) in the ten years since you last shot it.
It needs re-bedding by someone who knows how.

quote:

Originally posted by dpcd:
Easy; your wood stock has moved (warped) in the ten years since you last shot it.
It needs re-bedding by someone who knows how.

Hah! Maybe it’s the 30 year old ammo, too?
It’s a laminate stock, but I guess it could’ve warped but really don’t think so. This stock barrel channel is unlike any I’ve seen, about halfway between magazine cutout and tip of foreend is a metal block inletted into the channel, the block is shaped like an inverted shallow “V” and the barrel rests on the point of the “V”, a very small contact point. Don’t know if the block might’ve settled further into the inlet in the 10 years since last shot ? Thanks for the suggestion, I’d already thought of that.

dpcd’s post made me re-think the problem and I checked the metal “V” block in the stock, sure enough it was loose, took it out and put a piece of .025” shim stock in the bottom of the cutout, then put a dab of AccraGlas in front of it. Tried it out and it shot within about a quarter inch of where it should (low), I can deal with that. Sometimes it helps to have someone else’s take on a problem.

Good. Even laminated wood can shrink; albeit not as much. And it wasn't the ammo; 30 year old ammo is new to me. I shoot lots of WW2 ammo; works fine. The most accurate 50 cal I have is DM43, AP.

Karl, now you're minute of Buffalo. Go git 'em. Will you be down in the Coutadas?

quote:

Originally posted by Biebs:
Karl, now you're minute of Buffalo. Go git 'em. Will you be down in the Coutadas?

Yes, will he in Coutada 11, going to get 3 of them.

In my humble opinion and up to you but I would prefer to pump that forend up another tad,,Now that you know the problem, do it either with increased velocity or with another small tad of glass.

I, personally prefer 3" high at 100 yards with all my guns but thats just me and that 3 inches varies from one hunter to another between dead on to 3 inches high at 100 yds. it seems!