02-12-2023, 01:01 AM
DNS,
what is that "material" on the barrel between the end of the handguard and the can??? is it some kind of long skinny sock or something? I presume to keep the mirage down from the barrel heat? Although, I'm thinking it's going to take at least a mag dump or two before that chunk of steel begins to heat up much. that's a lot of steel. Or are those night time thermal sights really really sensitive to barrel heat distortion of the image they're getting?? I've never had one to use.
Yeah, have fun with that, I'm also thinking you should be in the 3100 to 3200 fps range with that barrel length and the 90gr. bullets. My 20" is in the 2900s with 85gr. and the 22" is at 3K with the 85gr. so you ought to get around 3100 to 3200 I'm guessing.
i haven't seen many posts lately by Mel, but you two should compare some notes.
have great fun
-tdbru
what is that "material" on the barrel between the end of the handguard and the can??? is it some kind of long skinny sock or something? I presume to keep the mirage down from the barrel heat? Although, I'm thinking it's going to take at least a mag dump or two before that chunk of steel begins to heat up much. that's a lot of steel. Or are those night time thermal sights really really sensitive to barrel heat distortion of the image they're getting?? I've never had one to use.
Yeah, have fun with that, I'm also thinking you should be in the 3100 to 3200 fps range with that barrel length and the 90gr. bullets. My 20" is in the 2900s with 85gr. and the 22" is at 3K with the 85gr. so you ought to get around 3100 to 3200 I'm guessing.
i haven't seen many posts lately by Mel, but you two should compare some notes.
have great fun
-tdbru