Belgium A5 question

tnpuddleduck

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I am looking for anyone that has had experience with old A5 shooting bismuth. I have been shooting steel loads (1 1/4 1400fps) through my 1962 A5 Mag for several years. (replaced barrel with Jap barrel). My gun will only function with these steel shells with friction rings set on light. I am changing to bismuth (1 1/2 oz 1400fps) and just interested if any of you have used it, and if you used magnum settings with friction rings. Thanks in advance for any experience you may share
 

Billy hill

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31.9 vs 43.7 Omaha Marian recoil calculator. Once you learn the foot pounds of recoil your gun takes to cycle you can easily know when to change your spring and friction ring setting. I have a very old a5 that I shoot bismuth with. 1oz at 1300fps. Reliable at that low of a load. Your load has a considerable increase of recoil. Start yours at max setting
 
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John Singer

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This may be helpful. Realize the setting that you need can depend on the lubrication of the magazine tube and condition of your recoil spring.

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Backwater12

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Yup you can run it dry or lube the tube to adjust friction in addition to ring settings. You need to go test it out with different configurations, no way around it. I use 1.25oz bismuth loads and have to run it with one steel ring and one bronze brake ring dryish tune but mine are only 1300fps. I can run it with all rings with a greased tube also. They are all different do to wear as well, so set it up for max barrel breaking power and move down till it works.
 

markd

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I hunt my grandfathers 1951 2 3/4" gun with newer Jap barrel. I have not been able to find any load that will cycle reliably on the heavy settings. Run it on the light setting, you will be fine.
 

ALMODUX

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Short answer: your gun will tell you, and you need to let it. All Auto 5s are unique in their own way. start on heavy and go light if needed. It SHOULD be a heavy ring setting load (per Browning), but that was written for 2-3/4” guns, and likely never changed.
 
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denduke

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+1 on lighter settings to recycle my Mag. I like 1 3/8 shot with lower velocity but only shoot steel. My “light twelve” is 2 3/4 and don’t shoot steel barrel is thin. so no ducking. Funny story....Had a local gunsmith said he had a guy that threw the washers away and shot everything! He said he regularly had to sell the guy forearms after they cracked.
 

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Backwater12

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Bet that thing kicked like crazy! My auto 5’s have been a joy to shoot. My 1st was a mint early short 2.5” chambered 16ga. Cut down hills and made my own loads, shot tons of dove with it in AZ. I’ve hunted duck with both a light 12 and a magnum. The mag is my favorite gun for shooting fame from a static position such as dove and waterfowl. I’m hunting duck the next 18 days with one and a 1970’s S&W waterfowler which is another great gun but doesn’t fit me quite as well.
 
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JP

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Short answer: your gun will tell you, and you need to let it. All Auto 5s are unique in their own way. start on heavy and go light if needed. It SHOULD be a heavy ring setting load (per Browning), but that was written for 2-3/4” guns, and likely never changed.
It was also for lead loads that had powders that often produced significant pressure spikes.
 

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