9.3x62

Demonical

Demonical

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Whitecourt, Alberta
I took the A.G. Zella-Mehlis M98 in 9.3x62 down to the range tonight, to stretch her out.

I fired 4, 5-shot groups: 285gr Norma Oryx; 286 Norma Alaska; 286 Hornady IL and 286 Nosler Partition. All 4 groups averaged ~9" high and 6" left.
I'm wondering if my shooting technique was wrong. I was only holding the trigger, pulling the stock into my shoulder and had nothing on the foreend at all. When I reload some more, I'm gonna try shooting, holding the foreend down.

I got about 6" group size with the first 3 bullets, and about a 3" group with the NPs. By far the best group; although it was my last group fired and maybe I was shooting better by then?

Muzzle velocity was pretty consistent across all 4 groups, at an avg 2428 fps; I think that's too high. About a week ago I fired 5 across the Chrony and had 2321 fps MV... what gives? I didn't change a thing...

It was definitely cooler that day, but we're only talking 7-10C. That shouldn't produce that large of a difference, should it?

My load was 57.5grs RL-15, Lapua brass, Winchester LR primers. COAL was 3.150", which just nicely fits in the M98 magazine.
 
First, these rifles most of the times have regulated sights.
They usually comply with the proof load - check out the markings on the barrel and post it if you want them explained to you.
The usual way of regulating these sights is on a 20 cm (8 inches) target, holding at 6 o'clock, it should hit centered on the target at ranges usually around 175 meters.

Somtimes, chronogrpahs give funny readings under different lights. I'd re-try it to confirm the real velocity. If you want all the loads to be around the same pressures / velocities, you need to determine shank seating depth, not bullet depht (or OAL), as each bullet have a different shape and therefore lenghts.
 
^ Baribal, when I shot the group that averaged 2321 fps, it was a really grey overcast day. Yesterday the sun was shining brightly. So maybe that's the reason for the difference?

I'll see if there's any markings on the barrel.

If I find the rifle continues to shoot left, is there a jig you can use to move the rear sight? Also, I was hoping there might be a tool that could be clamped on the barrel, and then use a screw to move the sight over.

I'm guessing that I only need to move the sight 1/32" or less... ?
 
Could be your stock. Europe is more humid than Alberta, and stocks usually dry out a bit and warp. I own and shoot vintage European firearms and have found this to be the case for the majority of my rifles. Try bedding your action and floating your barrel, makes a world of difference. Of course, some Mauser action rifles also like a bit of stock / barrel pressure near the end of the forearm.
 
There is a sight pushing tool available from Brownells.
I seem to remember it being in the $60-$70 dollar range.
You can drift the sight over without doing any damage if you are careful.
Use a teflon or umhw punch.

In both of my 9.3x62's the 286gr Partition is the most accurate bullet I have tried.
I was using RL-15 but have switched to Varget and the spreads and group sizes came down a little.
 
In my Husky 98 the Nosler Partition shoot the best,It has a fibreglass stock with a free floating BBL.
I find it to be very accurate with a scope.
 
Good info. The NP has always been a very accurate bullet for me, in any cartridge I've loaded for.

My rifle will be used for close range bear and moose hunting; 20-50 yard shots.
I will NEVER!! scope my vintage M98. Heresy... :rey2
 
I find any of the nosler bullets to shoot very well in my two 9.3x62's and have been pleasantly surprised by the hornady 286's as well. RL 15 and Varget have given me the best combination of accuracy and velocity in that order.
 
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