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If shooting Airguns at 100+ yards (even 200+ yds) .257 is a good option. .308 better than .30 for that purpose.

.257 ammunition is not really “costly”. You won’t save much, if any, with a .30 when compared to a .257. Cost is somewhat proportional to projectile weight. In order to save, you’ll need to stick with light pellets, so a .177 or .22 might be better if cost is a main consideration. $0.19 for NSA...

Except for boutique or custom .257 airgun builds, there are only the Texan .257, and the Bulldog .257 that I know of. There are no .257 pellets, so a .257 airgun will be a slug gun and have appropriate barrels for heavier slugs (.257 caliber in 70gr to 80gr). Same thing for .30 vs .308: .25...

SOS = speed of sound SOS is a limiting factor, but it is not the actual velocity limit. Maximum velocity of air flowing into a tube (barrel) is equal to SOS. But, besides flow velocity, there is also a simultaneous expansion towards the front. So the front velocity can be faster than SOS...

I also have a similar Arsenal mold in .257 (85gr) but prefer the 257420 BT. The .280 that you show is for a 270 Winchester. .280 is sized down to fit a .277 groove diameter. For a 7mm, best to start with at least .284 as cast. The Arsenal 257420 BT was used to win 2022 RMAC long range slug...

A slightly shorter 106gr 7mm will work well in the 1:14 twist TJ barrel. https://noebulletmolds.com/site/shop/bullet-moulds/284-7mm/284-106-fn-bx6/284-106-fn-bx6-4-cavity-rg4-bt/

Except the Altaros slugs are not available in 30 caliber.

With the advent of low cost laser range finders, stadiametric rangefinding is no longer a common requirement. Though, since range finders are not allowed in AAFTA field target, I still use it more than occasionally at matches and when encountering known size paper targets at various distances...

For hunting, I’d want a scope with a large depth of field. For AAFTA field target (including Hunter Division) we want a scope with a shallow depth of field. It is rare that a manufacturer purposely tries to make rifle scopes with shallow depth of field.

At 36T, I still enjoyed shooting at LD’s venue once again. I would have enjoyed it whether it was 28T or 36T. The Temecula venue was never known for high scores. In order for a 2025 AAFTA GP match to offer full GP points, it must have a raw Troyer value of 36. That makes for even lower scores...

Accu-Tac WB-4 on left Chinese SR-5QD on right

High angle targets have three factors that increase difficulty. 1) reduced vertical MOA allowance 2) more awkward shooting position 3) correction for reduced projectile drop when compared to typical horizontal target. The Troyer multiplier for an elevated target is a straight 25% increase...

I got one like that a few years ago. Good for what it is - except, the tilt lock up mechanism is so cheesy that I never used that bipod. I prefer the Harris clones for a cheap bipod. I also have a couple of Accutac bipods. The real Accutac has a far superior tilt lock up mechanism.

It’s possible to set a high angle AAFTA legal target, where it’s impossible to get a clean hit. Unless you have a specially designed target, the faceplate needs to be set vertically. So, the close, high angle targets present another particular type of difficulty. Presented with a 45 degree...

From about five years ago: For fun, I made some .257 caliber PLA slugs and pellets (shown in green). The slugs were a tight fit and the pellets were a little loose. I took two shots with each. At 2200psi 8.1gr slugs 1668fps (50fpe) 1651fps (49fpe) 2.8gr pellets 1760fps (19fpe) 1748fps (19fpe)

Not required. Per current rules, there is no DQ of targets. Back when they used to do that, they left the T average as set, including the DQ’d targets.

I think that most of the Battle Mountain competitors are used to lower scores at that venue. I wouldn’t worry too much about an even lower hit rate. There is another course setting strategy that could be used. Set the course that you normally would. Take the hardest targets and make them the...

Not exactly .30, but bigger than .25. Some custom builds: .308, 7mm, and .257. Also working on a 6.5mm. Max velocity where I’ve had good results is 1060fps. I feel that 1020 to 1040fps is a safer bet as the max in most cases. Actually, even slower (<1000 or <900fps) can be better in some...

The spherical type joint about which the erector tube pivots when we click the turrets: That’s the only point along the line of sight where the apparent scope height does not change from vertical clicking.

Everything else being the same, when I add more MOA compensation to the mount, I reduce the clicks by an equal MOA amount, in order to keep the poi the same. It really is as simple as that. Nothing would change in whatever ballistic app I’m using. However, adding compensation to a scope mount...