So I have an old 1322 I’m thinking about falling down the proverbial rabbit hole and beefing her up . Looks like I could go 25 cal for about 100$ more over sticking with 22. I wonder if it’s worth it ? Tia and Merry Christmas!
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Tuning 1322 mod
- Thread starter Pepper
- Start date
I've got two... It's my opinion that the 13xx is best suited to 177. Both mine are 22s, however. Maybe I will convert the pumper to 177.... It has a 14.5" barrel and is barely powerful enough. (10 fpe @ 10 pumps) I have another that is pcp, so that's a bit different. I really feel that a 25 13xx would definitely be under-powered, but that is an opinion. Nothing more.
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Caliber choice in a pumper is mostly a “what ranges?” question. For short distances, the larger calibers are fine but it’s going to have a mighty loopy trajectory at a distance. A long barrel helps but only so much for a valve with limited volume and pressure relative to a PCP.
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The new pistons and valves in the 1322 are actually much better than they used to be. Very close actually to a flat top setup. Mine is fully upgraded, though and tops out at 15fpe. The hammer spring is already stout. Upgrading it or adding tension doesn't do much if anything. 25 might be viable for 10m plinking. I could see that being fun. But I tend to shoot a lot between 20-30 yards. At 30 the 25 pellet would be like a flightless bird jumping off of a cliff.
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x2 on what Dallas said about the hammer spring. So long as it is strong enough to dump the air in the valve (cock it again and pull the trigger and get no air), that's all it needs to do. Anything above that is just making the trigger pull more difficult. I don't rank myself a trigger snob but the Crosman direct sear trigger on the 1322, 2240, etc. is the epitome of mediocrity, so my advice is take care not to make it worse by leaning on the hammer harder than necessary.
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Got the breech , barrel and internals ordered. I’ll post the finished project. Wish me luck ha
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Let us know how it goes!