Ag 42b ljungman vs mauser
- Thread starter Zygy
- Start date
burnt_servo
CGN Ultra frequent flyer
- Location
- right in the middle of b.c.
the ag42 was intended to use a 140 grain bullet , using the 160 grain bullet can cause possibly excessive gas pressure .
mod the gas system so it is similar to the hakim ( adjustable ) and this issue goes away .
the only other issue I have run into, and this unnerves me a bit , is how the floating firing pin dents the primers as the action is cycled .
I haven't had a issue yet , but I also don't use my rifles unless the ammo has cci #34 primers .
if your reloading with a stock gas system use imr 4064 and faster burning powders , this keeps the pressure lower in the gas system .
something I found with my rifles , if I build ammo for my Swedish mauser and seat the bullet almost out to the rifling , this ammo is too long and is now pushed into the rifling on my ag42 .
I neck size for both types of rifles without issues .
also you may come across some info recommending to grease ammo for use in the ag42 ..... DON"T do this . it will cause excessive rearward thrust and all sorts of nastiness .
hope this helps
mod the gas system so it is similar to the hakim ( adjustable ) and this issue goes away .
the only other issue I have run into, and this unnerves me a bit , is how the floating firing pin dents the primers as the action is cycled .
I haven't had a issue yet , but I also don't use my rifles unless the ammo has cci #34 primers .
if your reloading with a stock gas system use imr 4064 and faster burning powders , this keeps the pressure lower in the gas system .
something I found with my rifles , if I build ammo for my Swedish mauser and seat the bullet almost out to the rifling , this ammo is too long and is now pushed into the rifling on my ag42 .
I neck size for both types of rifles without issues .
also you may come across some info recommending to grease ammo for use in the ag42 ..... DON"T do this . it will cause excessive rearward thrust and all sorts of nastiness .
hope this helps
Eaglelord17
CGN Ultra frequent flyer
- Location
- Sault Ste. Marie
Not 100% true. The AG-42 was designed to use BOTH the M94 round (156grn bullet at 2400ft/sec) and the higher pressure M41 round (140grn at 2625ft/sec). This lead to many issues in service, which also lead to make shift solutions like oiling the rounds (not recommended) for it to work more reliably. Something that could have been easily solved with a adjustable gas system.
Overall I personally would go for the Mauser, to me they are nicer (I also prefer bolt actions). I also had a AG-42B do a out of battery detonation so that makes me a little biased (don't shoot federal ammo out of AG-42s!). That being said the AG-42 you will likely have to spend a bit of time to get the right load, but they are very accurate and quite fun.
I'm using the Hornady 140 gr BTHP Match (Item No. 26335) with the 2300 FPS load of H4831 from the Hornady 9th Edition.
What am I doing wrong or risking by using such a slow burning powder? H4831 is quite a bit slower than the widely-recommended-for-the-Ljungman IMR 4064. I have IMR 4064 on hand but do not recall why I did not use it for my last batch of loads.
The load cycles the action and it seems to be a relatively light load that's not being hard on the action. The loads seem to be as consistent and as accurate as I can see and shoot (which is not saying much!).
I do notice that the brass seems to be pretty hot and it stays hot after it is ejected (I catch the brass with a box mounted on the bench). But I may only be noticing that because I am catching the brass and paying attention to it right away rather than collecting it afterwards.
My Ljungman does not chew up the brass too badly. It leaves a triagular indent on the base from where the extractor hits the case during loading. The dent bends the rim inwards a tiny amount that you can see but my calipers have hard time measuring -- it's less than 0.001" but more than 0.0005" (less than a thou but more than half a thou, if I have those terms correct).
Let me know what damage I may be doing by using the slow powder. I'll definitely try the IMR 4064 for the next batch!
What am I doing wrong or risking by using such a slow burning powder? H4831 is quite a bit slower than the widely-recommended-for-the-Ljungman IMR 4064. I have IMR 4064 on hand but do not recall why I did not use it for my last batch of loads.
The load cycles the action and it seems to be a relatively light load that's not being hard on the action. The loads seem to be as consistent and as accurate as I can see and shoot (which is not saying much!).
I do notice that the brass seems to be pretty hot and it stays hot after it is ejected (I catch the brass with a box mounted on the bench). But I may only be noticing that because I am catching the brass and paying attention to it right away rather than collecting it afterwards.
My Ljungman does not chew up the brass too badly. It leaves a triagular indent on the base from where the extractor hits the case during loading. The dent bends the rim inwards a tiny amount that you can see but my calipers have hard time measuring -- it's less than 0.001" but more than 0.0005" (less than a thou but more than half a thou, if I have those terms correct).
Let me know what damage I may be doing by using the slow powder. I'll definitely try the IMR 4064 for the next batch!
This bothered me, too. My rifle came with a kit that had a few spare parts. one of the parts is the firing pin return spring. I added the sapre spring to the firing pin so it had two springs on it. the dents became much lighter. It would easy to find another spring of similar size from another source to add.
Colossal Ursidae
CGN Regular
- Location
- Ottawa Valley
